If you’ve read any of my articles of late, you would know that I am currently fixated on plate discipline. My piece on Jarred Kelenic sparked an article on take value and hitter approach. After that, a discovery that Darin Ruf is succeeding with one of the lowest swing rates in baseball despite not having phenomenal plate discipline on the surface inspired research into zone-swing differential and what it may tell us about a hitter.

Under the plate discipline section of player pages and on our leaderboards, we list both O-Swing% and Z-Swing%. On a handful of occasions, though, writers here have used zone-swing differential. Chet Gutwein defined this stat as D-Swing% in his piece about the NL West, and Justin Choi wrote about it in an article on the Blue Jays’ aggressiveness in early counts. In my most recent piece on Ruf, I cited zone-swing differential to conclude that while his overall swing rate is low, his discipline might not actually be that good, as he’s still swinging at a fair amount of pitches outside the zone, which you can see when you look at his below-average D-Swing rate.

The idea behind D-Swing% is simple: Hitters should be better when they swing at strikes and take balls. This isn’t the only way to succeed at the plate, but you would think that better hitters would have higher D-Swing rates on average. There were a couple comments about D-Swing rate on my Ruf piece, and that inspired me to look into it further. Is this a stat that tells us more about hitters than what we already have with the standalone O-Swing% and Z-Swing% stats?

This exact question was actually explored on the FanGraphs community blog back in 2017, where user Dominikk85 broke hitters into top- and bottom-30 groups by wRC+, ISO, OBP, and BABIP to see if O-Swing%, Z-Swing%, or what they referred to as Z-O-Swing% had the biggest impact in explaining the difference between the groups. They found that being more aggressive in the strike zone “helps the power but seems to slightly hurt the OBP,” but overall, they saw an advantage in using D-Swing% over the individual components.

I ran a similar study, but I wanted to control for more variables — zone rate and contact rate — to isolate the effect of D-Swing%, as many plate discipline metrics are interrelated. You may swing less at pitches in the strike zone if you are seeing more pitches outside, or you may choose to swing at pitches in the strike zone with which you can make contact (preferably hard), which may lower your Z-Swing% but raise your Z-Contact%. Without at least attempting to adjust for some of these variables, we may be missing out on conscious hitter tendencies that may be more the result of the pitches that they are seeing rather than their inherent swing choices. Read the rest of this entry »

Mere weeks ago, the Toronto Blue Jays were 66-61, the last of five teams in contention for two Wild Card spots. They looked the part — their +112 run differential led those five, and adding José Berríos at the deadline helped stabilize their rotation. That’s all well and good, but they were 6.5 games out of the second Wild Card, and their bullpen was undoing a lot of the rotation’s good work, especially new acquisition Brad Hand’s 8.22 ERA and 8.12 FIP.

Despite their evident talent, our playoff odds game them only a 4.7% chance of reaching the playoffs at their nadir on August 27. A one-in-20 shot isn’t impossible — less than 5% of plate appearances end in a home run, and yet we see tons of those every day — but things didn’t look good for Toronto. But here we are, three weeks later, and the Jays are in the first Wild Card spot (in a tie for it, but still). How did those rampaging Jays do it? Let’s take a look. Here’s a graph of what we’ll be talking about:

First things first: if you want to overcome a big deficit quickly, stop losing. The Jays have gone 14-2 in their past 16 games, scoring a comical 7.5 runs per game while allowing just over four themselves. That’s good for a Pythagorean record of .774 (using the Pythagenpat formulation of it), or in regular English, “Stop using a record estimator when a team is scoring twice as many runs as they allow, of course they’re doing well.” Read the rest of this entry »

Max Scherzer couldn’t quite pull off a trifecta for the ages on Sunday, but he was utterly dominant nonetheless. Facing the Padres in Los Angeles, he entered the history books with a flourish by becoming the 19th pitcher to reach 3,000 strikeouts, and just the third to record three immaculate innings — nine pitches, nine strikes, three strikeouts — in a career. Along the way, the 37-year-old righty retired the first 22 batters he faced, giving chase to a perfect game and his third career no-hitter, but he couldn’t complete that feat, as Eric Hosmer, who earlier in the game had become his 3,000th strikeout victim, broke up his bid with an eighth-inning double into the right field corner.

Not that the hit put a damper on the afternoon given what Scherzer accomplished. Making his eighth start for the Dodgers and needing six strikeouts to reach the milestone, he simply dominated the Padres all afternoon. He got to work quickly, striking out leadoff hitter Trent Grisham and needing just 12 pitches to get through the first, before mowing down Fernando Tatis Jr., Hosmer, and Tommy Pham consecutively on three-pitch strikeouts in the second.

The immaculate inning made Scherzer the third pitcher and the first right-hander to total three such innings in his career, joining lefties Sandy Koufax and Chris Sale. Scherzer previously threw immaculate innings against the Phillies (May 14, 2017) and Rays (June 5, 2018). Read the rest of this entry »

“I was at dinner with our scout in Japan and he made a comment that even truck drivers throw 95 over here,” said Oakland’s Assistant General Manager Dan Feinstein. “That caught my attention. I said, ‘If that’s true, maybe we should be trying out some of these truck drivers.'”

Feinstein soon decided to run an experiment. Oakland advertised an open tryout for pitchers and invited players with a college pedigree to send video to the A’s scouting department. From there, the team invited 60 of them to throw in front of scouts. One of them, right-hander Shohei Tomioka, bumped 95 on the gun, which impressed Oakland enough to offer him a contract then and there. “We call it the truck driver tryout,” Feinstein said with a chuckle.

Tomioka’s story was only possible because of a brilliant combination of scouting and technology, with a dash of luck mixed in. His signing is also an indication that the international talent market is laden with players just waiting to be discovered. See, Tomioka wasn’t simply a truck driver with a live arm. He was an experienced pitcher, a graduate of one of Tokyo’s top baseball programs — he was just never seen at the right time by the right people. By the time Oakland discovered him, he was loitering in a small local league. “There’s a lot of independent ball over there,” Feinstein says, “and he had been pitching in one of these kind of obscure leagues. He was free to try out and was throwing 95 so we signed him.”

For anyone lamenting the rise of big tech in baseball or the demise of the scout, Tomioka is living proof that, for good and for ill, an element of the unpredictable remains in the game. His signing demonstrates the value of having a robust international department, while also highlighting how fertile the international market is today, and how teams that invest abroad now stand to reap a competitive advantage in the years to come. To get a better sense of how that might develop, let’s take a deeper dive into how teams scout internationally today. Read the rest of this entry »

Xzavion Curry is a prospect-on-the-rise in the Cleveland organization. A seventh-round pick in 2019 out of Georgia Tech, the 23-year-old right-hander is 8-1 with a 2.23 ERA in 18 starts between Low-A Lynchburg and High-A Lake County. With the lion’s share at the latter, Curry has allowed just 65 hits in 93 innings. Moreover, he’s fanned 118 batters and issued just 16 free passes.

Command is Curry’s forte, but it’s not his only attribute. As our own Eric Longenhagen wrote in early June, the 5-foot-11, 195-pound hurler’s “vertical arm slot creates angle and carry on a fastball that plays well at the letters.” Augmenting Curry’s 91-94 mph four-seamer are a curveball, a slider, and a changeup.

He’s only been a full-time pitcher for a handful of years. Curry came to Georgia Tech as a two-way player, having excelled both on the mound and at short as an Atlanta-area prep. That his college coaches made him a full-time pitcher is a testament to changing times. Curry is African-American, and Black players have historically been channeled into position-player roles. Black pitchers have been at a premium.

“That does enter my mind,” said Curry, who had a 17-inning scoreless streak come to an end earlier this week. “As I go around to different places, and play different teams, I don’t really see a lot of Black pitchers. So that is something I’ve noticed, but as the younger generation goes forward, those guys just keep getting better and better. We have a couple in our organization, and I’m pretty sure we’ll start to see more and more Black pitchers.”

Curry cited a different sport when addressing his plus command. Read the rest of this entry »

Less than four weeks remain in the 2021 regular season, and while the coronavirus pandemic continues due to the Delta surge, MLB is back to some semblance of normalcy (though don’t tell that to the Red Sox). We’ve got a 162-game regular season, a comprehensible 10-team postseason format, the possibility of actual tiebreaker games being played if necessary — all of which were off the table last season — and no neutral sites. We’ve got some real playoff races as well, with the potential to produce end-of-season chaos.

Welcome back to Team Entropy. If you’re new here, don’t worry, I’ll catch you up.

A decade ago, during the wild 2011 races that resulted in the Rays and Cardinals snatching spots away from the collapsing Red Sox and Braves, respectively, on the season’s final day, I coined the phrase “Team Entropy” — taking a page from the Second Law of Thermodynamics, which states that all systems tend toward disorder — to describe the phenomenon of rooting for scenarios that produced such mayhem. I’ve returned to the concept annually, tracking the possibilities for end-of-season, multi-team pileups that would require MLB to deviate from its previously scheduled programming.

The idea is that if you’re a die-hard fan of a team trying to secure (or avoid blowing) a playoff spot, flag-waving for your squad of choice takes precedence, but if you’ve embraced the modern day’s maximalist menu of options that allow one not just to watch scoreboards but also to view multiple games on multiple gadgets, you want more. More baseball in the form of final-weekend division and Wild Card races. More baseball in the form of extra innings and tiebreaker scenarios topped with mustard and sauerkraut (though alas, the dastardly Manfred Man will still be mucking up those tiebreakers if they go past nine innings). You have TVs, laptops, tablets, and phones stacked like a Nam June Paik installation so you can monitor all the action at once. You want the MLB schedule-makers to contemplate entering the Federal Witness Protection Program instead of untangling once-far-fetched scenarios. If all that sounds familiar, you’re one of us. Read the rest of this entry »

I’ve always been a huge Darin Ruf fan, so getting to write about his 2021 success is a little bit more meaningful to me than it would be for almost any other player. Ruf is the last player I remember my grandfather singling out before he passed away, with the thought that Ruf, then a young prospect in the Phillies system, had the potential to be a productive big leaguer for our favorite team.

That was nine years ago. The Phillies promoted Ruf in late 2012 for his first cup of major league coffee, but he never amassed more than 297 plate appearances in any season for them. The bat was decent — Ruf posted a 105 wRC+ over 833 plate appearances, including a 125 wRC+ during his 2013 rookie season — but poor defensive numbers kept him barely above replacement-level in almost 300 games with Philadelphia. He was traded to the Dodgers in November of 2016, and even before he had an opportunity to make his organizational debut, Ruf’s contract was purchased by the Samsung Lions of the KBO. For three years, he raked in Asia, earning himself a minor league deal with the Giants for the pandemic-shortened 2020 season. (I was pretty excited.) A year later, he’s now the best hitter on a playoff-bound team (Kris Bryant is a notable omission from this list — he has a 119 wRC+ in 128 plate appearances with the Giants so far):

It’s no secret that the Giants have been receiving incredible production across their entire lineup. Their position players have posted a collective 113 wRC+ this season, a figure that ranks second in the majors among teams’ non-pitchers. But even in a lineup filled with players having above-average offensive seasons, Ruf stands out with his .279/.401/.544 slashline and 155 wRC+. That wRC+ ranks seventh in the majors among players with at least 250 plate appearances overall, sandwiched between Juan Soto (156) and Shohei Ohtani (154). That’s pretty phenomenal company, and it inspires two obvious questions. First, how did Ruf become one of the best hitters in baseball, at least this season? And, of course, how sustainable is this? Read the rest of this entry »

I will never not be fascinated by the fact that hitters actually produce negative value when swinging. In my most recent article outlining the struggles of Jarred Kelenic, I briefly discussed this idea. Even in a sea of hitters who are below-average when swinging, Kelenic stands out as being particularly bad when he takes a hack; he’s been worth roughly -6 runs per 100 swings so far this year. And as I noted, the hitters who do the best at limiting the damage on their swings tend to be baseball’s most productive hitters overall. From that research, I found an R-squared of 0.714 between a hitter’s run value when swinging and their seasonal wOBA.

That makes a ton of sense: Hitters who maximize their production on swings — that is, both limiting whiffs and making frequent loud contact — tend to be better hitters overall. But this also got me thinking about the reverse: How does taking pitches influence a hitter’s overall production? From the Kelenic research, I found only a moderate correlation between take value and seasonal wOBA, with an R of 0.422 and an R-squared of 0.178. That’s not to say that better “takers” aren’t better hitters; it just suggests that having extremely high-value takes doesn’t necessarily lend itself to having more success overall. For posterity’s sake, here’s the plot of 2021 hitters’ run value per 100 takes and their seasonal wOBAs. Players on both ends of the wOBA spectrum are highlighted just to demonstrate a few individual examples: Read the rest of this entry »

Eli Morgan has “a bugs-bunny changeup.” That’s how the 25-year-old rookie right-hander’s signature offering was described when it was suggested that I interview him for the Learning and Developing a Pitch series. Delivered at an average velocity of 75.1 mph, Morgan’s changeup is the slowest among pitchers who have worked at least 40 innings (not including Seattle’s Paul Sewald, who per StatCast has thrown just one changeup all season).

Cleveland’s eighth-round pick in the 2017 draft, Morgan has made 14 starts and has a 5.48 ERA and a 5.01 FIP to go with 68 strikeouts in 67.1 innings. He’s thrown his changeup — a pitch he described in detail this past Sunday — 22.4% of the time.

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Eli Morgan: “I started out mainly fastball/breaking ball, and then my senior year of high school I began developing my changeup. I’d thrown a splitter — that was my changeup for my first couple years of high school — but I figured that probably wasn’t great for my arm going forward. At the time, there was talk of Masahiro Tanaka having issues with his elbow because of the splitter, and that kind of turned me off of that pitch. I decided to go to a regular circle change.

“When I got to [Gonzaga University] they told me that if I wanted to pitch, let alone be a starter, I needed to have a good changeup. That was a big thing up there, so I started throwing it a lot more and got comfortable with it.

“Because I throw a four-seam fastball, I throw a four-seam changeup. That’s something one of my pitching coaches mentioned: ‘Make sure it comes out with the same seams as your fastball.’ That’s what I went with, and I had pretty good command of it right from the start. Over time, I began getting more movement on it, getting more fade. Read the rest of this entry »

When the Braves signed Ronald Acuña Jr. and Ozzie Albies to phenomenally team-friendly contracts before the 2019 season, two distinct possibilities loomed. First, the team could bank the money they saved and put out a good team at a discounted price. Second, they could reinvest those savings and attempt to put together a great team. Which they chose would say a lot about how the team planned on operating long-term.

The question is no longer open. The Braves have overcome a season-ending injury to Acuña to surge to the top of the NL East, and while the Phillies and Mets continue to nip at their heals, they’re well on their way to a fourth straight division title. They’ve done so thanks to some new young contributors — Austin Riley and Ian Anderson have come into their own this year. They’ve made some savvy signings and trades — Charlie Morton has been their best pitcher this year, and Jorge Soler has been excellent since joining the team.

Now, the Braves are making moves to prolong their stay atop the division. In late August, they signed Travis d’Arnaud to a two-year extension. They followed that up by signing Morton to a one-year deal (both contracts have team options tacked on). Let’s take a look at both of those deals, as well as how they affect the team’s outlook for next year and beyond.

Signing d’Arnaud to an extension — two years and $16 million with a team option for a third year — was hardly an obvious move for the team. He missed the majority of the season after tearing a ligament in his thumb in May. He’s hit well since his return, but even so, his seasonal line works out to an 84 wRC+. Combine that with solid receiving, and the total package works out to a roughly average catcher.

What made the Braves so eager to lock d’Arnaud up? His replacements fell well short of that average catcher bar. On the year, Atlanta’s catcher position has produced -1.4 WAR, the worst mark in the majors. It’s not an individual problem; a huge array of catchers have combined to weigh the position down:

Relative to that mess, d’Arnaud is a huge improvement. That’s not to say that Contreras won’t figure it out, or that Vogt isn’t a capable backup. But for a team with an embarrassment of riches at most positions, giving away so much value at catcher doesn’t make sense. It gets worse: the list of free agent catchers this offseason is nasty, brutish, and short. Yan Gomes and Martín Maldonado are the headliners, and it gets worse from there. Miss signing your target, and you might be in for a long offseason. Read the rest of this entry »