In early April, an article titled “Astros Pitching Prospect Spencer Arrighetti Is All in With Analytics” ran here at FanGraphs, and given what the 24-year-old right-hander had to say, the headline was wholly accurate. In a conversation that took place during spring training, Arrighetti displayed nuanced knowledge of his pitch metrics while comfortably addressing topics like seam-shifted wake and vertical approach angle. He presented as a bona fide pitching nerd.

Four months into his rookie season — he made his major league debut with Houston on April 10 — Arrighetti is a nerd with an altered approach. The evolution of his M.O. has taken place over the course of an up-and-down campaign that currently has him on a high. Over his last two starts, the 2021 sixth-round pick out of the University of Louisiana at Lafayette has allowed just three runs while fanning 25 batters in 13 innings. On the year, he has a 5.14 ERA, a 4.18 FIP, and a 27.9% strikeout rate in 105 innings.

Arrighetti explained how and why his approach has changed when we sat down to chat at Fenway Park this past weekend. My first question elicited an expansive, five-minute response, after which we shared a handful of additional exchanges.

———

David Laurila: What’s changed since we talked in spring training?

Spencer Arrighetti: “I have a much better perspective now. When we talked in Lakeland, I was speaking with three big league spring training games under my belt. This is a very different game than I thought at that time. The conversation we had, as great as it was, left out a really big piece of what successful pitching is in the modern era. Obviously, shapes and velocity are really important. Arsenal design is really important. There are people who believe those are primary, but after my time up here, I’m not convinced that chasing shapes is the way to go. Read the rest of this entry »

There’s quite a lot of bickering in sports, and not many things bring out more vehement disagreement than discussions involving who should get various awards. Even now, nearly 30 years later, when I think about Mo Vaughn beating out Albert Belle for the 1995 AL MVP, or Dante Bichette finishing second in that year’s NL race despite putting up just 1.8 WAR, I have to suppress a compelling desire to flip over a table. This year, thankfully, it’s hard to imagine the MVP voting results will be anywhere near as egregious as the ones we saw in ’95. That’s because the way MVP voters in the BBWAA evaluate players has changed dramatically since then.

Aaron Judge has easily the best traditional case for the AL MVP award if the season ended today. He leads the league in two of the main old-school batting stats: home runs and RBI. Bobby Witt Jr. and his .347 batting average is all that would stand between Judge and the Triple Crown. For what it’s worth, Judge would win the MLB Triple Crown, with twice the emeralds, rather than the AL one.

For most of baseball history, beginning with the first time the BBWAA handed out the award in 1931, numbers like these usually would’ve been good enough to win MVP honors. It also would’ve helped Judge’s case that the Yankees have one of the best records in baseball. If this were 30 years ago, Judge would all but officially have this thing wrapped up, barring an injury or the worst slump of his career.

But it’s the 2020s, not the 1990s, and I doubt anyone would dispute too strenuously the notion that ideas on performance, and their related awards, have shifted in recent years. Now, when talking about either an advanced offense statistic like wRC+ or a modern framework statistic like WAR, Judge certainly is no slouch. He currently leads baseball with 8.3 WAR, and his 218 wRC+ would be the eighth-highest seasonal mark in AL/NL history, behind only seasons by Barry Bonds, Babe Ruth, and Ted Williams. But by WAR, his lead is a small one, roughly two-tenths of a run (!) over Bobby Witt Jr., who has surged since the start of July (.439/.476/.803, 247 wRC+ in 33 games) to supplant Gunnar Henderson as Judge’s main competition for the award. Henderson was right there with Judge for much of the early part of the season, and though he’s fallen off a bit, he’s still fourth in the majors with 6.4 WAR and capable of catching fire again at any time. With a month and a half left, Juan Soto can’t be completely counted out either.

A similar dynamic persists in the NL. Shohei Ohtani has looked a lot like the obvious MVP choice for much of the season, as he’s done, well, one half of the Shohei Ohtani thing: He is murdering baseballs and pitchers’ dreams. But as with Judge, there’s some serious competition when you look at WAR. Ohtani stands at the top, but by a fraction of a run ahead of Elly De La Cruz. Ketel Marte and Francisco Lindor are both within five runs of Ohtani, and nobody serious has ever claimed you can use WAR to conclusively settle disputes on differences that small. De La Cruz has more WAR than Ohtani since the start of June, and the latter two have more than the Dodgers slugger since the beginning of May. Marcell Ozuna, who has strong traditional stats (.302 BA, 35 HR, 90 RBI) shouldn’t be completely discounted if the Braves show signs of life; those numbers still matter, just not to the extent that they once did. With a fairly wide open race, there are plenty of stars with name power lurking just behind the leaders, such as Bryce Harper and Freddie Freeman.

The answer of who should win the MVP awards is one we probably can’t answer beyond me giving my opinion, which I won’t do given the likelihood that I will be voting for one of the awards. But who will win the MVP awards is something we can make a reasonable stab at predicting. It’s actually been a while since I approached the topic, but I’ve long had a model derived from history to project the major year-end awards given out by the BBWAA. It was due for some updates, because the voters have changed. Some of the traditional things that voters prioritized, like team quality, have been de-emphasized by voters, though not completely. And the biggest change is the existence of WAR. Whatever flavor you prefer, be it Baseball Reference, Baseball Prospectus, or the smooth, creamy swirl that can be scooped by our display window, this general stat has changed a lot about how performance is perceived.

There have been 47 MVP awards presented to position players who finished their seasons with fewer than 6.0 WAR; that’s more than a quarter of all hitter MVP seasons. However, excluding 2020, a hitter has not won an MVP without reaching that threshold since ’06, when both winners fell short: the NL’s Ryan Howard had 5.92 WAR, while AL winner Justin Morneau had 3.77 WAR.

When modeling the data, I use all the votes, not just the winners, and WAR is a pretty lousy variable when predicting voter behavior throughout most of history. That’s not surprising on its face since we’ve had WAR to use for only the last 15 years or so, making it impossible for most awards to have explicitly considered it. But there also appears to be only marginal implicit consideration, in which voters based their votes on the things that go into WAR without using the actual statistic. There’s a great deal of correlation between winning awards and high WARs in history, but that’s only because two of the things that voters have really liked, home runs and batting average, also tend to lead to higher WAR numbers. As an independent variable, WAR doesn’t help explain votes very well. That is, until about the year 2000.

If you only look at votes since 2000, all of a sudden, WAR goes from an irrelevant variable to one of the key components in a voting model. Voters in 2002 may not have been able to actually look at WAR, but even before Moneyball was a thing, baseball writers were paying much more attention to OBP, SLG, and defensive value at least partially because of analysts like Bill James, Pete Palmer, and John Thorn in the 1980s and ’90s. Now, depending on your approach, once you deal with the correlations between variables, WAR comes out as one of or the most crucial MVP variable today. Could you imagine a world, even just 20 years ago, in which owners would propose paying players based on what sabermetrics nerds on the internet concocted?

The model I use, which I spent most of last week updating, takes modern voting behaviors into consideration. I use all three WAR variants listed above because it’s not clear which one most voters use. Here is how ZiPS currently sees the two MVP races this season:

This model thinks Judge is the favorite, but his odds to lose are nearly a coin flip. Witt is the runner-up, followed by Soto, Henderson, and the somehow-still-underrated José Ramírez. If we look at a model that considers all the BBWAA-voting years rather than just the 21st century results, this becomes a much more lopsided race.

Over in the NL, the updated ZiPS model sees a race that’s far more uncertain than the one in the AL.

Ohtani comes out as the favorite, but he has less than a one-in-three chance to win it. Behind him are the other WAR leaders, plus Ozuna.

Some of the WAR leaders without strong Triple Crown numbers, like Lindor, drop off considerably based on the entire history of voting, while Ozuna becomes a co-favorite with Ohtani. I haven’t talked about pitchers much in this article; they’re still included in the model, but none make the top 10 in the projected probabilities. Simply put, the willingness to vote pitchers for MVP seems to have declined over time. ZiPS doesn’t think any pitcher has been as dominant this season as the two most recent starters to win the award, Clayton Kershaw in 2014 and Justin Verlander in ’11, and closers these days typically can’t expect to get more than a few stray votes at the bottom of ballots.

It’ll be interesting to see how voting continues to change moving forward. In any case, no matter who you support for the MVP awards, strap in because there’s still plenty of baseball left to be played.

What a wild ride it’s been for Jake McCarthy the past three seasons. In 2022, he finished fourth in NL Rookie of the Year voting, seemingly the right fielder of the future for the Arizona Diamondbacks. It wasn’t the kind of performance that would make anyone think that he — and not Corbin Carroll — was Arizona’s franchise player. But it was the kind of performance that could tempt inveterate contrarians into saying, “You know, Carroll gets all the attention, but McCarthy is the one who really makes this team tick.”

Then, in 2023, McCarthy was total buttcrack. He barely kept his head above replacement level as he lost playing time to Alek Thomas, Pavin Smith, Tommy Pham, and a partridge in a pear tree. Then, because when it rains it pours — even in the desert — McCarthy suffered an oblique injury that kept him from playing any part in the Diamondbacks’ run to the World Series.

But in 2024, he’s reclaimed his rightful place in the lineup, and he’s hitting .303/.375/.451. With almost two months left in the regular season, he’s set new career highs in games played and WAR. All is well once again. Read the rest of this entry »

This is Michael Rosen’s first piece as a FanGraphs contributor. You may have read his previous work at the site, including his article about the Kirby Index, a metric he created to measure command using release angles. He lives in Los Angeles and works as a transportation planner.

Earlier this year, I tried to solve the riddle of how Shota Imanaga threw his invisible fastball. The pitch had (and still has) a rare combination of traits: At the time of writing, only Imanaga and Cristian Javier threw fastballs from super flat vertical approach angles (VAA) with elite induced vertical break (IVB). A fastball with a flat VAA or high IVB plays a trick on the hitter’s perception; a fastball with both qualities becomes nearly unhittable, or invisible, when located at the top of the zone. I posed two questions in that piece: Why was this invisible fastball so rare? And what was Imanaga specifically doing to throw a fastball with these traits?

The first question can be answered, my research shows, by looking directly at release angles. Release angles reflect the direction that the pitcher is aiming the ball at release, which I wrote about at length in my article on the Kirby Index from May. That act of aiming — specifically, the direction the ball is oriented out of the pitcher’s hand — also affects the amount of backspin on a four-seam fastball. Read the rest of this entry »

Welcome back to Top of the Order, where every Tuesday and Friday I’ll be starting your baseball day with some news, notes, and thoughts about the game we love.

For Friday’s column, I took the time to run down a long list of players who could be placed on irrevocable waivers and claimed prior to September 1, which is the deadline for them to be playoff eligible with their new teams.

The Rangers were the most intriguing of the teams I covered in that piece, for the obvious reason that they are the reigning World Series champs. Many of the players from last year’s club are still around, though some of them are currently injured, and even as Texas struggled this season, the organization and its fans held out hope a surge wasn’t far off. That said, the Rangers are simply running out of time. The trade deadline has passed and their playoff odds are below 2%. The reality of their situation has led me to ask the following question: Could the team that just won the World Series become the Angels less than a year later?

Read the rest of this entry »

Read the rest of this entry »

I typed the command “high-leverage reliever fangraphs.com” into Google over the weekend and set the search range to the past month. About 130 results came up. Next, I ran the same search, except with “low-leverage reliever” instead. This time, Google told me there weren’t “many great matches” for my search and suggested I try “using words that might appear” on the page I was looking for. Message received, Google. Apparently, our coverage here at FanGraphs is biased toward players who actually hold meaningful influence over the outcomes of games. That just won’t do!

All joking aside, there’s a very simple reason we don’t write about low-leverage relievers that often. Low-leverage relievers don’t really exist, at least not in the same way high-leverage relievers do. For one thing, relievers are naturally going to enter games in higher-leverage spots because pitchers are more likely to exit games in higher-leverage spots. The average leverage index when entering games (gmLI) for relievers this season is 1.12; that’s 0.12 higher than a perfectly average-leverage spot. Moreover, the low-leverage relief opportunities do exist are more likely to go to the revolving door of replacement-level arms at the bottom of each team’s bullpen depth chart, rather than an established pitcher whose full-time job is that of a low-leverage reliever. Consider that the median gmLI for active, qualified relievers this season is 1.21. By design, most relievers who stick around long enough for you to know their names are going to be pitching in higher-leverage spots. Yet, that doesn’t mean there aren’t any full-time low-leverage relievers. If anything, it just means those guys are more unusual – and therefore pretty interesting.

With all that in mind, I set out to find a low-leverage arm worth writing about. The qualified reliever (0.3 IP per team game) with the lowest gmLI this season is Thyago Vieira, with a 0.29 gmLI. That would be the lowest gmLI in a season for a qualified reliever since rookie Johan Santana’s record-setting 0.27 gmLI in 2000. Yet, with all due respect to Vieira, he’s hardly the most fun part of that fun fact. (Although, if Vieira goes on to win two Cy Young awards and a Triple Crown I will gladly eat my words.) The 31-year-old Vieira perfectly fits the mold of the replacement-level/revolving-door reliever I described above. He has played for the Brewers, Orioles, and Diamondbacks this season, and he’s currently on the restricted list at Triple-A in the D-backs organization. It seems highly unlikely he’ll get back to majors and pitch the necessary 10.2 innings he would need to remain qualified at season’s end. And, unfortunately, his 0.29 gmLI isn’t nearly as noteworthy without the “qualified” qualifier. If I lower the threshold to 30 innings pitched, 25 other relievers have had a lower-leverage season on record (since 1974).

Funnily enough, however, it was when I looked just beyond the qualified names that I struck gold iron (help me out here metal enthusiasts, is that the right metaphor?) in my search for low-leverage relievers. Tanner Rainey of the Nationals is in the midst of what could be the lowest-leverage relief season of all time: Read the rest of this entry »

I have a secret to tell, one that might surprise you. I think that baseball analysis is too complex. I can’t keep track of it all. There are too many numbers, too many ways to approach things, too many parts of the game that might be good in one context, bad in another, and neutral in a third. My whole job is to analyze baseball, and yet I find myself drowning in data more often than controlling it. My solution is to simplify. I look for players’ superpowers – carrying tools, in baseball parlance. Aaron Judge is power personified, with the rest of his game building off of that. José Ramírez is a bat control genius. Mookie Betts is the most coordinated man alive. Luis Arraez could hit soft line drives the other way in his sleep. These shortcuts help me think about how the rest of a player’s game fits in. But I have a problem: I’m trying to analyze Jackson Chourio, and I can’t figure out what his superpower is.

You might think it’s his speed. You wouldn’t be wrong, exactly. He’s one of the fastest players in baseball, and he uses that to his advantage all over the place. He’s an excellent baserunner and defender. He eats up ground in the outfield in huge loping strides, the kind of quick you only notice after the fact. I watch him and think he’s an above-average center fielder. The Brewers have only played him in the corners this year, since they’re overrun with excellent defensive outfielders and Chourio has the least experience, but he’s so good that if he ends up in a corner, he might be peak Jason Heyward there.

I guess we could stop the article there, but speed isn’t really a superpower for many great players. Sure, Bobby Witt Jr. and Elly De La Cruz are the current kings of sprint speed, but you don’t look at their games and say, “Oh, the main thing about them is that they’re fast.” That’s the territory of Billy Hamilton or Victor Scott II, and those guys just aren’t stars in the way that I think Chourio will be. I’m looking for an offensive weapon that makes everything work for him, one that explains how he’s hitting major league pitching at age 20. Read the rest of this entry »

Thomas White is having an impressive first full professional season. Drafted 35th overall last year by the Miami Marlins out of Phillips Academy in Andover, Massachusetts, the 19-year-old left-hander has a 2.84 ERA, a 2.99 FIP, and a 29.6% strikeout rate over 76 innings between Low-A Jupiter and High-A Beloit. His late-May promotion to the higher of those two levels came for a simple reason. As our lead prospect analyst Eric Longenhagen explained when assigning him a 45+ in early June, White’s stuff was simply too good for the Florida State League.

I had an opportunity to talk to the promising youngster when Beloit played at West Michigan earlier this week, and one of the things I made it a point to learn about was the mindset that augments his arsenal. I began by asking him how much of a role analytics are playing in his development.

“I’m starting to learn more about the actual numbers and how all that stuff works,” White told me. “At the end of the day, I like to just go out and get outs — I’ve never been a big tech guy — but I definitely know a lot more about my pitches now that I have access to all the data. So, I’m still learning, and I want to learn, but the best measurement for me is how hitters react to them.”

The pitches that hitters are reacting to include a four-seam fastball that has been averaging, according to White, 95.6 mph and 17.5 inches of vertical ride. He is also throwing a two-seam changeup and a sweeper-slider. Currently in the works, but not yet part of his repertoire, is “a shorter gyro pitch,” either a cutter or a hard slider. Read the rest of this entry »

Ben Lindbergh and Meg Rowley banter about the appeal of deflected balls caught on the fly, the lack of variety in MLB.TV highlights, Aaron Judge’s bases-empty intentional walks, the Braves falling out of playoff position (for now), and the surprising team with a trio of young, above-average, qualified hitters. Then (40:44) they rank the types of baseball versatility and Stat Blast (56:18) about the decline of switch-hitting, Maury Wills and switch-hitter slumps, how often managers are fired following a loss, and whether intra-division trades are getting more common.

Audio intro: Moon Hound, “Effectively Wild Theme”
Audio outro: Ted O., “Effectively Wild Theme”

Link to Rockies-Mets play
Link to Bogaerts/Kelly play
Link to Stark on Judge
Link to Tango on Judge
Link to Jaffe on the Braves
Link to Ben C. on depth
Link to Ben C. on depth 2
Link to Ben C. on depth on EW
Link to preseason playoff odds
Link to BP IL Ledger
Link to young hitters query
Link to query without minimums
Link to Ben on Twins.com
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Link to Venditte rule article
Link to Mike Temple Stat Blast cover
Link to Athletic SH article
Link to Fox Sports SH article
Link to WSJ SH article
Link to LAT SH article
Link to youth sports specialization
Link to switch-hitting data
Link to SH graph 1
Link to SH graph 2
Link to Ben on bad switch-hitters
Link to FG on bad switch-hitters
Link to Mullins article 1
Link to Mullins article 2
Link to Mullins article 3
Link to Victorino article 1
Link to Victorino article 2
Link to Victorino article 3
Link to Ryan Nelson’s Twitter
Link to Steiner/Wills clip
Link to Wills SH OPS graph
Link to switch-hitter correlations
Link to stat stabilization points
Link to Dr. Dog album
Link to Ferguson SABR bio
Link to Ferguson wiki
Link to “Death to Flying Things”
Link to “Death to Flying Things” 2
Link to SH origin story 1
Link to SH origin story 2
Link to previous SH Stat Blast
Link to 2024 switch-hitters
Link to Twins Daily on SH
Link to Crashfish Boxes on SH
Link to 1985 LAT article on SH
Link to Year of the Balk article
Link to Berkman/Jones SH quotes
Link to MLB Showalter ad
Link to Ben on caliber of play
Link to managerial firings data
Link to manager data by decade
Link to managers fired after Ws
Link to trades data
Link to interleague trades data
Link to interleague trading history
Link to trades graph 1
Link to trades graph 2
Link to Betances injury article
Link to ballpark meetup forms
Link to meetup organizer form

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