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Metropolitan Homesick Blues

The Art of Pitch Framing

Trying to turn balls into strikes isn't new, but the catchers who do it well may soon be more prized than ever

It’s the day before a foul tip off the bat of Rajai Davis will fracture Francisco Cervelli’s hand, and the Yankees’ still-intact starting catcher is in excellent spirits. After spending almost all of 2012 in the minors, he’s happy to be back in the Yankees clubhouse. He’s also happy to be off to a good start with the bat, a start that’s about to get better; in a few hours, he’ll take Mark Buehrle deep for his third home run of the season. But how Cervelli hits is secondary, even to Cervelli.

“I’ve been focused on my defense, and that’s it,” Cervelli says. “And I’m going to keep doing that no matter what happens with my bat.”

A lot of eyebrows, and maybe a few middle fingers, were raised over the winter, when the Yankees — the team with the catching legacy of Dickey, Berra, Howard, Munson, and Posada, not to mention the $200 million–plus payroll — entrusted their catching duties to Cervelli and backup catcher Chris Stewart, a duo that entered the season with a combined .249/.315/.332 line in the big leagues. In the past, the Yankees would have dipped into the free-agent market and signed someone with a bigger bat and a bigger name — A.J. Pierzynski, perhaps, who was coming off a 27-homer season, or another offense-first option like Mike Napoli, who signed with the rival Red Sox. Both players agreed to one-year contracts, so they wouldn’t have hampered the Yankees’ goal of getting under the $189 million luxury tax threshold for 2014.1

Instead, they stuck with two players who are earning barely more than the major league minimum. And they’ll probably be better off. Cervelli and Stewart can do more to help the Yankees win with a subtle shift of the glove than Mariano Rivera can with his cutter, than Brett Gardner can in the outfield, than Ichiro can with his arm and his base-running ability combined. They have an ability that not only doesn’t show up in the box score but doesn’t show up in advanced stats like UZR and WAR. Baseball teams have always known it existed, but they haven’t known what it was worth until now. And one need only look at the lineup card to see how valuable the Yankees believe it is.

“They’re both exceptional defenders,” Yankees GM Brian Cashman said of Cervelli and Stewart in a recent interview with Mike Ferrin on SiriusXM’s MLB Network Radio. “Tremendous pitch framers. We’re big into that.”

Take a look at these two pitches from 2012:

They’re both four-seam fastballs thrown by right-handed pitchers to left-handed hitters. They both pass through the strike zone 21 inches off the ground, between 11.7 and 12.9 inches from the center of home plate. They both hit their targets, so the catchers know where they’re headed and have time to prepare. And they’re both called by the same umpire, Sam Holbrook.

In fact, the two pitches are similar in just about every respect but their outcomes. The top one, thrown by James Shields last July, is a strike, but the bottom one, thrown by Liam Hendriks last June, is a ball.

We can’t say for sure why only one was a strike; maybe Holbrook was just feeling generous when the first pitch crossed the plate. But we do know one important variable that differs between the two pitches — the catcher. The pitch on the top was caught by the Rays’ Jose Molina, one of baseball’s best receivers. The pitch on the bottom was caught by the Twins’ Ryan Doumit, one of the worst. And that may have made all the difference.

Focus on how catchers “frame” pitches to make them look more like strikes, or talk to guys who are good at it, and the distinction between players like Molina and Doumit starts to stand out. Depending on how they’re caught, two pitches that are almost identical on their way to the plate can look a lot different once they get to the glove.

Concentrate on the catchers in those clips. Molina sets up farther outside, so even though the pitch to him is farther from the plate, he catches it in the center of his body. Doumit has to reach for the ball, drawing attention to its distance from the strike zone. The bases are empty in both clips, giving the catchers the freedom to set up any way they want without worrying about base runners. But only Molina goes down to one knee to present a lower, more stable target. Doumit’s head jerks sharply downward the instant after he catches the pitch. Molina’s remains still. And Doumit’s glove, descending to meet the pitch, dips even more after he catches it. This sends the ball farther outside the zone and forces him to jerk the glove back up in an exaggerated fashion. Molina’s glove never gets any lower than it is when he receives the pitch. He makes a much more subtle upward movement, and it takes about half as much time for his glove to come to rest.

These differences in technique don’t only pop up on some pitches. They’re present for almost every pitch, as constant as a pitcher’s motion or a batter’s stance. Go back to 2011, when Molina (top) was with Toronto and Doumit (bottom) played for Pittsburgh. You’ll see the same differences:

Although the changes in camera angle and batter position make it difficult to tell, these pitches are even closer together, according to PITCHf/x: 1.26 feet and 1.29 feet from the center of the strike zone, respectively. Both are four-seamers on 0-1 counts called by umpire Mike Winters. Again, we see the call go one way for Molina and the other for Doumit. And again, it’s not tough to tell why. Doumit’s whole body leans toward the outside of the plate, while Molina’s stays almost perfectly still. Doumit raises and clenches his right hand, creating a potential distraction for the umpire; Molina’s right hand remains tucked behind him. Doumit’s head and glove again dip before his pronounced pull. Molina times his reception to catch the ball with his glove already on the rise.

Once you train yourself to see it, it’s almost impossible to stop seeing it. Baseball is often described as a chess match between batter and pitcher. But it’s more like a chess match between batter and pitcher in which, once in a while, the catcher grabs the board and moves someone’s piece.

In a September 2011 article titled “Spinning Yarn: Removing the Mask,” Mike Fast, then an analyst for Baseball Prospectus (and now an analyst for the Houston Astros), attempted to determine what catcher receiving was worth. By studying where strikes are typically called and establishing which pitchers were getting more or fewer strikes than they “should” have, given where their pitches crossed the plate, Fast was able to isolate the effect of the catcher. He concluded that pitch framing can make a major impact, and it also is more consistent from year to year than even reliable offensive metrics like on-base percentage or slugging percentage. In other words, it’s not insignificant, and it’s not just noise. It’s a valuable skill that persists from season to season.

Fast found that Molina, the best receiver, was worth 35 runs above average per 120 games, and Doumit, the worst, was worth 26 runs below average. After Houston hired Fast, another analyst named Max Marchi succeeded him at Baseball Prospectus2 and brought with him a sophisticated model for framing that accounted for most of the potentially confounding factors: the umpire, the ballpark, the batter, the ball-strike count, and the pitch location and type. According to Marchi, who has consulted for a major league club and whose work has been mentioned by Rays manager Joe Maddon, Molina has saved his teams 111 runs — or, using the standard 10-runs-to-a-win conversion, about 11 wins — because of framing from 2008 to 2013. (The only other catcher with a higher run total over that same time period, Brian McCann at 122, has caught more than twice as many pitches.) Doumit, on the other end of the receiving spectrum, cost his teams 155 runs. That comes out to 0.50 runs added by Molina and 0.55 runs subtracted by Doumit per 100 pitches, an enormous difference.3 For comparative purposes, Barry Bonds’s bat during the 2001-2004 seasons, when he basically broke baseball, was worth about 0.78 runs above average per game.

Granted, those run totals aren’t typical. Molina and Doumit are outliers; no one else comes close to costing his team as much per pitch as Doumit, and only Brewers catcher Jonathan Lucroy has approached Molina levels of framing effectiveness. (Lucroy has some advantages over Molina. He’s 11 years younger and has a better bat, which allows him to stay in the lineup. Since his debut in 2010, he’s saved almost twice as many runs due to framing as any other catcher, aside from Molina.)

Still, consider the implications. Giancarlo Stanton, one of the most coveted young players in the game, was worth as much4 (in terms of Wins Above Replacement) over the past two seasons as Molina’s framing alone was worth in a part-time role over the past five-plus, yet Molina’s value, unlike Stanton’s, is largely overlooked. And that’s without factoring in any value Molina added by calling games, handling his pitching staff, and controlling the running game. Best of all, Molina’s done it all for an average of $1.5 million per season, in an era when a single win on the free-agent market usually runs teams around $5 million. It’s no surprise that Molina plays for the Rays, low-payroll competitors who’ve found ways to make a dollar go further than any other organization. Nor is it a coincidence that Molina, a career backup catcher whom standard sabermetric stats peg as a replacement-level player, became a first-time starter and appeared in a career-high 102 games in his age-37 season, barely six months after Fast’s study appeared on Baseball Prospectus.

Eleven wins sounds like too much for a single part-time pitch receiver to add in just over five seasons, but think about how many opportunities to gain and lose strikes there are over a 162-game schedule. A durable catcher can catch around 10,000 called pitches in a single season. Many of those pitches are clear-cut calls. But that still leaves hundreds, maybe thousands, of pitches in the shadowy border region between ball and strike, where a good receiver can perform the catching equivalent of turning water into wine. Even if an extra strike doesn’t send the batter back to the dugout, it puts him in a less-favorable count and makes him less likely to do damage later in the at-bat. Dan Turkenkopf, another former Baseball Prospectus staffer who was recently hired by the Rays, put the average value of turning a single ball into a strike at 0.13 runs. If you do that a few times per game, as Molina does, the run total climbs quickly.5

“If a catcher can perfect a great way of receiving the ball, and he gets the ball maybe a half a ball outside — or even a ball outside — off the corners consistently, I think he’s worth his weight in gold,” says Steve Yeager, a 15-year big league veteran and the Dodgers’ catching coach. Molina is listed at 250 pounds, so depending on the karat, his weight in gold would be worth much more than he’s making. But even a 24-karat Molina wouldn’t go for as much as Marchi’s model suggests he’s worth to a team.

It’s not as if receiving skills weren’t valued when Yeager was playing; as more than one person (OK, almost every person) I spoke to pointed out, the word “catch” is right there in the name of the position. But it’s easier to discount a certain skill when there are no numbers attached to it. (Just try to talk to the more dogmatic species of stathead about clubhouse chemistry.) Before framing became a sabermetric buzzword, Molina’s receiving skills were known but nebulous. His offensive struggles, on the other hand, were easier to see, and almost as easy to quantify. But now that we can count his contributions on both sides of the ball, what he does on defense is impossible to dismiss. The Rays, a team that’s smart enough to see that, are reaping the rewards (and so is Molina, though it’s a little late for him to cash in).

Jose’s younger brother Yadier and retired older brother Bengie share(d) his receiving skill to a lesser degree, and all three inspire awe from their peers at the position. “I think the three Molinas, they come from another planet,” says Yankees catcher Francisco Cervelli. “I’ve never seen anything like that in my life.” But as many Molinas as there are, they’re not a renewable resource. At some point, the last Molina will retire, and if receiving skills are still undervalued among major league catchers, a team that could learn to teach framing efficiently at the lower levels, minting Molina-like receivers while other teams are still running out Ryan Doumits, might have its hands on a major market inefficiency.

Thanks to advances in technology and analysts like Fast and Marchi, we have a much better sense than before of what a catcher with good receiving skills is worth. We also know which big leaguers qualify as the best in the business. What we don’t know, necessarily, is where good framing catchers come from. Are good receivers born or made? And if they’re made, how do you make them?

Chris Stewart Video is widely available through the minors, but the pitch-tracking technology that has made the Molina name more famous has penetrated only so far. According to one front-office source, about 40 minor league ballparks have a PITCHf/x system installed, and about 25 are equipped with Trackman (a competing ball-tracking technology that relies on Doppler radar). Around 20 of the 30 parent clubs have at least one affiliate with one of the two systems in place, with the highest concentration at Triple-A. The teams pool much of the information that’s collected; the more of your own PITCHf/x or Trackman data you elect to share with others, the more you receive in return (although clubs generally keep info from non-league events held in their stadiums — workouts, high school and college games — to themselves).

Still, 65 ballparks with ball-tracking technology just scratches the surface of professional baseball below the big leagues. Even in 2013, seven years after the first PITCHf/x systems were installed in big league ballparks, most of the minors — to say nothing of amateur and international baseball — are a ball-tracking blind spot. That means that receiving skills still have to be evaluated the old-fashioned way (with actual eyes) and the slightly less old-fashioned way (via video).6

That’s not really a problem, because the search for good framers, like almost every other pursuit in the modern front office, works best with input from both stats and scouts. Over small samples, an experienced scout or instructor can tell you more about someone’s receiving skills than a computer connected to a camera can, especially at levels where it’s more difficult for catchers to frame pitches because the pitchers can’t hit the target consistently. Opinions vary on exactly how long it takes to evaluate a catcher’s receiving skills, but the consensus is that the assessment comes quickly.

Yankees catcher Chris Stewart confidently says he can spot a strong receiver in five to 10 pitches. Others offer more conservative estimates. “I think you need a couple of games to give a truthful evaluation,” Yeager says. “You have to see a guy catch a couple of days, and you have to see him catch three or four different pitchers, because every pitcher’s different.”

That snap judgment is just the start. Once you’ve acquired a catcher with some raw talent for framing, the real work begins. There’s no one-size-fits-all plan for grooming great receivers — and not every catching instructor agrees on the proper way to receive pitches — but there are, generally, two types of improvements a player can make. There’s the mechanical change, which can be adopted immediately, and the incremental increase in comfort and confidence that comes with experience, repetition, and familiarity with a pitching staff.

Some catchers are framing fixer-uppers, just a few exterior alterations away from becoming much more valuable properties. For Diamondbacks bullpen coach Glenn Sherlock, a former minor league catcher and an experienced catching instructor whom Arizona GM Kevin Towers credits with turning Miguel Montero into a good framer, the first fix is glove height. “I think catchers’ targets at the bottom of the zone is so important,” he says. “You see a lot of catchers who have high targets and take the balls out of the strike zone.”7

Stewart recalls a mechanical tweak that helped him in 2008: “I had my thumb pointing down. That’s kind of the natural way you learn to catch. But [Yankees bench coach Tony Pena] had me turn my glove so my thumb was more pointing toward the second baseman area instead of pointing down at the plate. It helped me work on balls coming on my left side easier. I didn’t have to turn my whole arm.”

Yeager focuses first on a catcher’s stance. “I think you can correct some guys that are doing something just by the positioning of his arm,” he says. “Sometimes they have a tendency to get the arm inside of the knee, or they get it on the outside of the knee, and … their knee sometimes gets in the way … Everything in the positioning is a key.”

Lower the target, turn your thumb, adjust your crouch. That’s the easy stuff. It may feel unnatural at first, and it takes some time to get used to, but it can produce improvement overnight. The more grueling method of improvement, the one that over the long run produces the greater gains, is as simple as it is painstakingly slow: catch. Catch in games, catch in the bullpen, catch in side sessions, and then do it again in your dreams after you finally fall asleep. “Baseball is a habit,” Cervelli says. “It’s a repetition. You’ve got to repeat things every day, and they come.”

Bullpen drills are a big part of that repetition. Pitching machines can simulate any type of pitch, at any speed, in any location, and apprentice pitch framers exhaust all the possibilities. The drills aren’t a time to fill your quota of practice pitches and move on to something more interesting. They’re a time to concentrate and consolidate lessons.

“We do some things with the pitching machines, breaking balls, left-handed, right-handed,” Sherlock says. “We move the catcher around behind the plate to work on backhand pitches and forehand pitches. Work on some soft wiffle-balls to simulate movement, and just working on catching it without a glove … Also, something that we do is check to make sure that they’re breathing back there. You start watching the catchers go through these drills and see that they’re holding their breath.”

Motivated catchers don’t just do drills. They watch video, both of themselves and their opponents at the position. “Watch video of guys that are good,” Stewart says. “Watch them and see how they do it and try to intertwine it into your game.”

Eventually, all of this pays off in game action. If it sounds a little monotonous, well, it is. That’s another reason why, even if decades down the line every place where baseball is played comes pre-installed with a PITCHf/x (or FIELDf/x) system, there will still be a role for scouts. No matter how all-seeing the eyes in the sky above ballparks become, teams will still need to know what’s going on inside their players. Character and work ethic are at least as important in determining whether a catcher reaches his ceiling as a receiver as it is in determining how good a hitter he’ll be.

“We can make you better if you have an open mind and you’re willing to work and willing to try certain things,” says Yeager, who mentions Russell Martin, A.J. Ellis, and Tim Federowicz as some of his best students.8 “[You've] got to want to get back there and take the time of squatting and blocking balls, transferring balls, throwing balls, receiving balls, getting your hands beat up, getting foul tips into you. You’ve got to realize that you’re going to get beat up physically back there.”

The good news is that if you do have the masochistic impulse to get drilled by baseballs, you can have a future in framing. Naturally, the younger you start to work, and the more naturally gifted you are, the quicker it will come, but those gifts aren’t a prerequisite. “If you see a guy that has some very soft hands, you know that at one point he’s going to get it,” says Tony Pena, a four-time Gold Glover who now serves as the Yankees’ bench coach and catching instructor.9 “There’s no limit. There’s going to be a guy that plays for a long time and then becomes a really good catcher over years.”

“I don’t think everybody can be the same,” Cervelli says. “[But] if you work, if you let somebody coach you, it can happen. You can be close.” Stewart concurs. “Obviously there’s something inside that person that allows him to do what he’s able to do, but it’s more of a repetition skill, I think, than a God-given talent.”

Being born without the hands of a Molina brother is a handicap, but it’s a handicap that can be overcome. Now that teams know what a great receiver is worth, and players know that they know, both sides have more incentive than ever to focus on framing, both before and after each backstop’s big league debut.

Jeff Luhnow Brian Cashman has never known the feeling, but there’s a certain freedom that comes with being in charge of a bad baseball team, especially one that isn’t expected to be good. Unburdened by the constant pressure to minimize risk and construct a competitive roster that accompanies a club like the Yankees, losing teams led by creative executives are able to experiment and innovate. If you’re going to be bad no matter what you do, you might as well try to be bad in a way that will make you better eventually.

That’s what we’re seeing with the Astros, a rebuilding club that’s currently making the Marlins look like big spenders. Rather than risk jeopardizing their long-term potential by trying to strike a balance between rebuilding and respectability, the Astros decided to raze their roster, trading every veteran who wasn’t tied down and spending hardly anything on free agents. It’s a path that has led to a lot of losing, with much more to come. But it’s also allowed the Astros to completely start over, in just about every capacity. They’ve restocked a formerly barren minor league system, climbing from 26th to ninth in the Baseball Prospectus organizational rankings in a single season. They’ve blazed new trails in pitcher usage patterns and defensive shifts. And led by GM Jeff Luhnow, they’ve assembled a new-school, cross-disciplinary front office with intellectual talent drawn from atypical baseball backgrounds.

One member of that front office is Mike Fast. And as you’d expect, given Fast’s focus on framing before he was hired, the Astros are exploring ways in which they can make receiving skills a strength. You can’t see that effort reflected yet at the major league level; backup catcher Carlos Corporan is about average, according to Marchi’s model, and starter Jason Castro is somewhat worse. It wouldn’t matter much, anyway. A few extra strikes in the majors right now wouldn’t make the Astros’ immediate outlook any less hopeless. It’s below the surface where Houston’s framing future is taking shape. That’s where the Astros are seeking out the potential benefits of developing strong receivers before they reach the big league level.

By stocking the minors with good framers, the Astros could accelerate their pitching prospects’ development or make them more attractive to other teams by bolstering their stats with catchers who earn them extra strikes. With the catchers themselves, Houston can simply wait until Castro and Corporan enter the arbitration process and start to make more than they’re worth, at which point they can promote those prospects. By the time the Astros decide to make winning at the big league level a priority, they could have a few catchers capable of expanding the strike zone. They may have put the first phase of that plan into action when they acquired Double-A catching prospect Max Stassi, a 22-year-old with a reputation for strong receiving skills, in the February trade that sent Jed Lowrie to Oakland.

The man tasked with overseeing the receiver assembly line is Mark Bailey, the former Astros catcher and bullpen coach who accepted a new position this season as the club’s roving catching instructor, and he couldn’t sound more excited. The 51-year-old is a recent convert to the church of pitch framing, and he’s eager to spread the word. Bailey has seen the research and the stats, and he’s also studied what the catchers who produce the best stats look like. Fast and Astros director of decision sciences Sig Mejdal have sent him video comparing good receivers like Jose Molina and Jonathan Lucroy with subpar receivers, and the visuals made a major impression.

“A lot of it’s stuff that we already kind of knew and learned,” Bailey says, “but to really see it and look at the numbers … some of the video that I saw was really amazing. The good and the bad. You compare, and it’s like, ‘Whoa.'”

That eureka moment made Bailey reevaluate what he looks for first in a catcher.

“In the past, it’s always been the guy with the strong arm,” Bailey says. “But my opinion is moving in [the direction of framing], just by watching this and looking at some of that research … It’s always been the premium asset back there, but this is a little bit different. This takes it a step further.”

The next stage is implementing a development strategy designed to make the most of each catcher’s receiving skills, and there appears to be buy-in at all levels of the organization. Jeff Murphy, a former minor league backstop who spent 12 seasons as the Cardinals’ bullpen catcher and catching instructor, followed Luhnow to Houston, where he’s serving in the same role this season. Although Murphy stresses still-intangible aspects of catching — like handling a pitching staff and calling games — to a greater degree than Bailey, it’s clear that he considers receiving skills important. Maybe a little too important, if you ask his exhausted pupils.

“The first day of spring training, I told them, every morning, we’re going to be in the cage at 7 a.m.,” Murphy says. “And we’re doing receiving drills, and we’re just working on receiving … and these guys had never been through that type of work. And they said, ‘You know what, we’re not used to this.’ And I said, ‘This is our time to practice.'”

If Bailey, Murphy, and the rest of the new Houston regime have their way, that practice will translate into wins a few years from now. And if the Astros’ approach succeeds, it’s bound to inspire copycats, even if no one writes a book or makes a movie about it. All it will take is for other teams to start asking the same simple question Bailey says he’s asked himself: “Why not try to get better?”

“That’s the way the game is,” says Kirt Manwaring, the Giants’ former Gold Glove catcher and current catching coordinator. “Once somebody does something, once somebody’s successful at something, then they want to try to find the method behind the madness. ‘Well, what are they doing?'”

Not every baseball lifer is as open-minded as Bailey, but the Astros, the Yankees, the Rays, and any other teams that have already started targeting and trying to develop good framers are only the vanguard. The market for catchers with superior receiving skills will grow more crowded as long as it looks like an area where clubs can get an edge. As Russell Martin says, it’s “a lot easier to teach somebody how to frame a pitch than it would be to teach them how to hit homers and drive in runs.”

If you take the Astros’ plan, and Manwaring’s comment about copycats, to their logical conclusion, then at some point in the not-too-distant future, almost every team — save, perhaps, for a few with gifted offensive catchers for whom framing aptitude is less paramount — could have someone squatting behind the plate and stealing extra strikes. But sweeping changes to the sport rarely come without unforeseen consequences. That kind of mass movement toward catchers with strong receiving skills would upset the delicate balance between batter and pitcher; if you think baseball’s strikeout rates are high now, wait until the first wave of Stepford framers arrives. If umpires start to see nothing but good receivers, they might adjust their zones, much like a hitter adjusts to a pitch he’s shown too often. Then the framing bubble would burst, as previous advantages have when every organization discovered them.

It’s also possible that a greater awareness of framing could hasten the end of umpiring as we know it. The discovery of framing has opened up a new field of research for authors and aspiring sabermetricians, but what’s good for baseball writers isn’t always good for baseball. Even if the intent isn’t to criticize umpires, it’s impossible to write about framing without drawing some attention to the fact that the rulebook strike zone is more of an abstract concept than something that exists in the wild. The more attention that the catcher’s ability to influence the strike zone receives, the more likely it is that Major League Baseball will act to automate it. And if the human element goes, replaced by robo umps, then framing will go with it.

The calls might be more accurate. But we’d lose the art that is a perfect frame.

What Francisco Cervelli wants to talk about, more than how much better he’s gotten at framing, is how much better he’s still going to get. “I’m hungry,” he says. “I want it more than everybody. I don’t work to maintain, I work to be better and better and better.”

Cervelli’s stats suggest that the work has been worth it. From 2009 to 2010, his receiving saved the Yankees 6.3 runs in 979 innings. But from 2011 to 2013, looking much more quiet behind the plate, he’s saved the Yankees 16.6 runs in 459⅓ innings — more than twice as many runs in less than half the playing time. Cervelli was an infielder and a pitcher before the Yankees signed him out of Venezuela and converted him to catcher, so he faced a steeper learning curve than most professionals. But he’s living proof that receiving skills can improve over time if accompanied by proper coaching and a desire to improve.

The market-induced demise of framing might arrive one day, but it’s not here yet. Careerwise, this is the best time in baseball history to be a solid receiver. Framing is Chris Stewart’s meal ticket, too — he’s saved 16.5 runs in a little more than 8,000 pitches — and he’s well aware of it.

“Within the last two or three years it’s taken over as one of the highly sought-after skill sets for a defensive catcher,” he says. “The sabermetrics stuff coming out, they put a value on it. We actually have a number for it. It’s not a ‘This guy’s good’ or ‘This guy’s bad,’ it’s like, ‘This guy’s this good’ and ‘This guy’s this bad.'”

It’s early in the season, but it’s not too soon to assess the Yankees’ Cervelli/Stewart experiment. Through the game in which Cervelli was injured, the pair had combined to catch 1,792 called pitches and saved the Yankees a little more than five runs in the process. If we extend that to the number of called pitches Yankees catchers caught last season, their total contribution comes to 36 runs. A.J. Pierzynski’s extended total over the entire season has him costing the Rangers roughly seven runs. He might outhit Cervelli and Stewart, but not by nearly enough to make up for a framing disparity that size. Even if he came close, there would still be the not-so-small matter of his salary, which is almost six times higher than Cervelli’s and Stewart’s put together.

Runs are runs, whether they’re scored or saved. Now that we know how many runs Cervelli, Stewart, and others like them are saving, those former fringe players have become commodities that every team wants.

Ben Lindbergh is the editor-in-chief of Baseball Prospectus. This is his first piece for Grantland.

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