Hey there, and welcome to a segment that I’m hoping to turn into a recurring feature. Last week, I started delving into the individual event-level predictions built into our pitch grading model, PitchingBot. I made some broad generalizations about the kinds of pitches most likely to be hit for home runs and then looked at which pitchers threw them most often. I gathered some information about those pitches (fastballs, poorly located, in hitter-friendly counts but not 3-0), and tried to figure out what that meant for home run rate.

More specifically, it’s fun to look at these bad pitches, and it’s fun for me to see how few of them actually result in homers. The 50 pitches most likely to be hit for a home run surrendered one homer combined. The top 100 resulted in only three homers, while the next 100 resulted in six homers. There’s a ton of variability, but at its core, baseball is still a game of failure – even when a pitcher does the worst thing they possibly can, hitters mostly don’t punish them.

To that end, I’m going to try a new weekly roundup: various meatball-related items that show who’s been exceptional in one direction or another over the past week. Given that it’s mostly a list of things without a ton of analysis necessary, I’m going to start out by trying to add it on top of my normal schedule, and I’ll also use this to update some of my favorite junk stats (whomps per whiff, Kimbrels, etc.). If it’s popular, great! If not, hey, it’s a long baseball season and you have to keep trying things. Anyway, let’s get going.
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Pedro Avila might not strike you as exceptional. He’s mostly on mop-up duty in the Guardians bullpen, hoovering up low-leverage innings. His sinker was deemed the “most normal” in baseball by Leo Morgenstern earlier this year. And his 3.60 ERA and 3.92 FIP is right around average for major league relievers.

But behind this veneer of normalcy lies the weirdest changeup in baseball.

Below is a plot of the average vertical and horizontal moment of every pitcher’s changeup during the 2024 season (minimum 50 changeups, data as of August 15, vertical movement measured without gravity). You have a 50/50 shot of guessing which one is Avila’s:

The brown dot on the left of my beautifully drawn circle is Logan Allen’s changeup, Avila’s erstwhile teammate. Michael Baumann wrote about Allen’s “weird-ass changeup” last July, noting that the pitch had the least horizontal movement of any major league changeup in the 2023 season. (Unfortunately, despite Michael’s request, no “Weird-Ass Changeup World Tour” tag has since been added to the CMS.) The purple dot on the right is Avila’s changeup, which is averaging even less horizontal movement than Allen’s.

But the average movement profile doesn’t fully capture what’s weird about Avila’s changeup. To truly appreciate the weirdness, it is necessary to take a look at why it moves like that.

It starts with his crazy grip. Look at this grip!

He aligns his thumb and pointer finger in a quasi-circle-change grip while pressing on the exact opposite side of the ball with his other three fingers. The funky grip — a circle-change/splitter/forkball/vulcan-change hybrid — informs the way the ball comes out of his hand.

Scott Firth, a former performance coordinator at Tread Athletics, described Avila’s grip in a tweet from January 2023 and the movement profile that results from it.

“Looks like fosh/modified box grip, some guys will cut it hard with 3 fingers on outer part of ball,” Firth wrote. “Low spin low efficiency could catch ssw [seam-shifted wake] either direction depending on cw [clockwise] or ccw gyro.”

The contradictory forces of fade from the pronation and cut from the pressure of his three fingers results in chaos; because of that grip, the ball comes off the pointer finger and middle finger simultaneously, sending the pitch downward:

Avila’s changeup almost imitates a knuckleball in the randomness of its spin axis. A helpful way to understand this is by looking at Avila’s spin-based movement and observed movement. The spin-based movement is the orientation directly after release; the observed movement is the implied axis based on the movement of the pitch. (When the spin-based orientation does not match the observed orientation, it is generally assumed that “seam-shifted wake” is responsible. More on that later.)

The observed spin axis on Avila’s changeup nearly goes around the entire clock. Check out the green bars on the graphic below:

Avila’s changeup might ultimately move similarly to Allen’s from a “shape” perspective, but the aesthetic experience from the hitter’s vantage point is distinct. It’s a complete outlier from the perspective of spin efficiency, defined as the percentage of spin that is either sidespin or backspin/topspin. The median changeup is 95% spin efficient. Allen’s changeup has 72% spin efficiency, one of the lowest marks in baseball. Avila’s changeup checks in at 24% (!!) spin efficiency, which is more like a typical gyro slider than any changeup.

The Guardians broadcast picked up on this following a slow-motion replay of an Avila changeup. After watching the replay, Guardians color commentator Rick Manning remarked that “It’s almost like a forkball but he spins it like a slider.”

Perhaps it goes without saying, but this is not the traditional way to throw a changeup. Driveline, for instance, published an article showing five different grips for aspiring changeup-throwers to try; none of them resemble Avila’s.

The classic changeup is thrown with heavy pronation. Think Logan Webb’s changeup fading down and away from a left-handed hitter:

Logan Webb, Nasty 87mph Changeup. ?

7th K pic.twitter.com/TGSkcD98Pu

— Rob Friedman (@PitchingNinja) August 15, 2024

Some pitchers struggle to throw a changeup with heavy pronation. One key reason, as Noah Woodward pointed out in a March 2023 post, is that the act of “turning over” the ball is awkward for pitchers who don’t throw another pitch that requires turning over their wrist in the manner required of a Webb-esque changeup.

For pitchers like Tarik Skubal or Matthew Boyd with more of an inherent supination bias, the seam-shifted wake changeup is a way to throw an offspeed pitch without contorting their arms in uncomfortable directions.

“I throw a changeup just like a slider now, but using essentially the smooth part of the baseball to create no drag on one side, but seam is on the other side,” Boyd told MLB.com’s Jason Beck in March 2023. “And because of that, I get more movement than I did before, but the pattern of how my wrist is moving is like the other pitches. So it allows for the other pitches to be more consistent.”

Avila’s changeup does not fit neatly in either of these categories. It is, somehow, a pronated seam-shifted wake changeup. That explains why Avila leads the league in the gap between his changeup’s spin-based axis and his observed axis.

But that gap doesn’t tell the whole story. Most other pitchers have a similar pattern when their actual spin orientation deviates significantly from the “spin-based” orientation: It shifts to the left (or right) in a predictable pattern. Take Skubal’s seam-shifted wake changeup, for example. The “observed spin” is shifted to the left of the spin-based movement.

Avila’s changeup is not like that. Because of the heavy gyro spin that his grip produces, the pitch leaves the hand at somewhat random orientations and can either fade or cut, as the movement map of all his changeups in 2024 shows. Notice how the green dots (his changeups) can end up on either side of the pitch plot:

So Avila’s changeup is definitely weird, but is it good? It certainly produces some bizarre swings, even when it’s poorly located. Heliot Ramos, for one, looked flummoxed after whiffing on one middle-middle Avila changeup:

Avila’s changeup gets a lot of whiffs — among changeups thrown at least 100 times, his ranks in the 85th percentile in swinging strike percentage and the 78th percentile in whiffs per swing. On the other hand, he throws one out of every six changeups in the “waste” zone, which sort of makes sense to me — that grip feels prone to misfires. (Shout out to Alex Chamberlain’s pitch leaderboard for these stats.)

While Avila’s changeup has graded out as basically average from a run value perspective, I’m not always sure that run value is the best way to evaluate the quality of a given pitch. There are interaction effects between pitches — in other words, the thought of the changeup in the batter’s mind might improve the quality of his fastball — and Avila is using the changeup as his primary out-pitch and getting pretty good results.

Given that the Padres DFA’d Avila in April, this season looks like a success for him, and the changeup is without question a big part of all that. As always with pitching, weird is where you want to be.

If it’s parity you’re looking for, consider this: 10 of the top 11 teams in these rankings are separated by just 4.5 games in the major league standings, and the odd team out has been the hottest ballclub in baseball over the last two weeks. While no team is currently on pace to win 100 games, the bunching in the standings should make for some very exciting playoff races down the stretch.

This season, we’ve revamped our power rankings. The old model wasn’t very reactive to the ups and downs of any given team’s performance throughout the season, and by September, it was giving far too much weight to a team’s full body of work without taking into account how the club had changed, improved, or declined since March. That’s why we’ve decided to build our power rankings model using a modified Elo rating system. If you’re familiar with chess rankings or FiveThirtyEight’s defunct sports section, you’ll know that Elo is an elegant solution that measures teams’ relative strength and is very reactive to recent performance.

To avoid overweighting recent results during the season, we weigh each team’s raw Elo rank using our coin flip playoff odds (specifically, we regress the playoff odds by 50% and weigh those against the raw Elo ranking, increasing in weight as the season progresses to a maximum of 25%). As the best and worst teams sort themselves out throughout the season, they’ll filter to the top and bottom of the rankings, while the exercise will remain reactive to hot streaks or cold snaps.

First up are the full rankings, presented in a sortable table. Below that, I’ve grouped the teams into tiers with comments on a handful of clubs. You’ll notice that the official ordinal rankings don’t always match the tiers — I’ve taken some editorial liberties when grouping teams together — but generally, the ordering is consistent. One thing to note: The playoff odds listed in the tables below are our standard Depth Charts odds, not the coin flip odds that are used in the ranking formula. Read the rest of this entry »

Earlier this week, Michael Baumann wrote about how Kirby Yates has a chance to join Craig Kimbrel and Wade Davis as only relievers in MLB history with multiple seasons of 40 or more appearances and an ERA south of 1.25. Five years after logging a 1.19 ERA over 60 outings with the San Diego Padres, the 37-year-old right-hander has come out of the Texas Rangers bullpen 44 times and has a 1.19 ERA.

I procured subject-specific quotes from Yates for my colleague’s article, but there were a few other perspectives I wanted to glean from him as well. That he has quietly put up better numbers than many people realize was one of them. For instance, since he began throwing his signature splitter in 2017, the underrated righty has a 36.0% strikeout rate that ranks sixth-best among pitchers who have thrown at least 250 innings.

“It’s almost like a tale of two of two careers,” Yates said upon hearing that. “It’s before the split and then after the split. Now I’m getting into a situation where you could call it three careers in a sense — since [March 2021 Tommy John] surgery and how I’ve been coming back from that. Last year was good, but also kind of shaky. The two-and-a-half to three years off, I felt that. This year I feel more comfortable. I’ve felt like I could attack some things I needed to attack.”

Yates doesn’t feel that his splitter is quite as good as it was pre-surgery, although he does believe it is getting back to what it was. His fastball is another story. He told me that it’s never been better. Read the rest of this entry »

If you’re speaking with someone from Toronto who doesn’t follow baseball, they can probably tell you two things about the Blue Jays. The first is that Vladimir Guerrero Jr. is the best player on the team. The second is that Vladimir Guerrero Jr. sucks.

The first point is pretty accurate, and it’s absolutely true this season — more on that in a moment. The second point is categorically false, but alas, such is the curse of superstardom. The player who has his face on posters all around the city is going to get plenty of credit when things go right, but he’s also going to shoulder an excessive amount of criticism when things go wrong. When you’re the guy starring in the Uncrustables ads, fans expect a crust-free performance on the field, too.

Guerrero made a name for himself in 2021, which was no easy task considering the man with whom he shares his name. Yet, with 48 home runs, 111 RBI, and a runner-up finish for AL MVP, Guerrero gave the average Torontonian a reason to talk about baseball for the first time since José Bautista was punched in the face. Then, Guerrero spent the next two years corroding his golden reputation. To be clear, no one who knows what they’re talking about ever thought he was a bad ballplayer — heck, he set a new record for the highest salary ever awarded in an arbitration hearing this past offseason — but his performance certainly went downhill. If all you were comparing him to was the best version of himself (like that motivational poster in your gym always tells you to do), he really was pretty disappointing last year: Read the rest of this entry »

As the man who inspired Brad Pitt’s most memorable role once said, “My shit doesn’t work in the playoffs.” Assuming Billy Beane wasn’t explaining an October Metamucil purchase to a grocery store cashier who simply asked how his day was going, what Beane likely meant was that the statistics used to construct his major league rosters don’t accrue large enough samples during postseason series to eventually even out in his favor. Over the course of 162 games, a team’s production settles into a reasonable representation of the squad’s true talent. But zoom in on any random seven-game stretch and the team on the field might look like a bunch of dudes in baseball player cosplay.

What applies to team outcomes applies just as well to player outcomes. A player with a perfectly respectable stat line in the regular season might morph into a pumpkin as the calendar shifts to fall, or on the flip side, an unlikely hero may emerge from the ashes of a cruel summer and put the whole team on his back.

With the law of averages in mind, I’d always assumed that the more consistent hitters would be better positioned to perform well in the playoffs. My thinking went like this: The natural variation in these hitters’ performances would never wander too far from their season-long average, making them the safer, more predictable options. Whereas streaky hitters — the ones with high highs, low lows, and steep transitions between the two — would be too reliant on “getting hot at the right time” to be the type of hitter a front office should depend on in the postseason.

Reader, I was incorrect. Read the rest of this entry »

Eleven seasons after making his big league debut, David Peralta might best be described as a professional hitter. As clichéd (and definitionally daft) as that label is, it’s pretty much what the 37-year-old San Diego Padres outfielder is at this stage of his career. A reliable left-handed bat now with his fourth team — the bulk of his time has come with the Arizona Diamondbacks — Peralta is slashing .268/.327/.439 with six home runs and a 118 wRC+ in the current campaign. His career numbers are actually somewhat similar. Over 1,200 games and 4,492 plate appearances, the Valencia, Venezuela native has a .279/.334/.449 slash line to go with 123 home runs and a 109 wRC+.

Peralta talked hitting when the Padres visited Fenway Park earlier this season.

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David Laurila: How different a hitter are you now compared to when you reached the big leagues?

David Peralta: “I’m different now, because every year, every day, you learn something to get better, how to approach the game, how to approach pitching. That’s especially true now. When I first got called up, in 2014, you didn’t see that many guys throwing 99-100 mph. Now that’s normal. So, it’s a different approach that you have to have.”

Laurila: Have there been any notable changes over the years?

Peralta: “I’ve always been more simple and short, but I tried one time in my career to change my mechanics. It worked for a little bit and then stopped working.”

Laurila: This was when?

Peralta: “In 2022, in the offseason, I started doing something different with Michael Brantley. I started hitting the way he does. Again, it worked for a little bit, but then for some reason I came off of that and couldn’t find myself again. I ended up going back to my mechanics. You have to know what type of player you are, what type of hitter you are. I know that I’m not a home run hitter. I’m a line drive hitter, so I have to work on things that way.”

Laurila: Brantley hasn’t been a home run hitter either. What was he doing that you were trying to emulate? Read the rest of this entry »

Aaron Judge has ascended to another plane of existence. On Wednesday, he hit his 300th career home run in his 955th career game, making him by far the fastest player to reach that milestone. He’s currently on pace for 57 homers and 11.3 WAR, and in the two weeks since I compared him to a seven-foot-tall god-child, he’s somehow gotten even better, raising his wRC+ from 212 to 219. All of this is to say that the occasion didn’t need any help in the drama department, but the White Sox couldn’t help themselves.

In the top of the eighth inning, down four runs with one out and Alex Verdugo on second, brand-new manager Grady Sizemore chose to intentionally walk Juan Soto in order to get to Judge. Let me say that again: The White Sox intentionally walked someone so that they could pitch to the guy with the best batting line since 2004 Barry Bonds – whom they were going to have to face anyway unless Verdugo somehow got doubled off second base – with two runners on base rather than one. And it worked, in the sense that Judge quickly freed the White Sox from having to play in a competitive baseball game. Read the rest of this entry »

Bryce Miller has improved on his 2023 rookie season with the Seattle Mariners. Especially notable are his ERA (3.46 versus last year’s 4.32), FIP (3.70 versus 3.98), and OPS against opposite-handed hitters (.685 OPS versus .917). At the same time, many of his numbers have been strikingly similar. When I spoke to the 25-year-old right-hander at the end of July — he’s since made two starts — his win-loss record and average fastball velocity were identical to last year’s marks, as were his FB% and HR/FB%. His strikeout rate differed by just a few percentage points.

I cited those similarities to the righty, then proceeded to ask him what differentiates this season’s version of Bryce Miller from last year’s.

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Bryce Miller: “I think that type of stuff is very similar, but the lefty-righty splits are quite a bit different. Last year, lefties batted over .300 against me. This year, it’s around .215. I think the addition of the splitter has been big, and I’ve also been locating better. If you look at the heat maps from last year, a lot of the fastballs were in the middle of the plate. This year, I’ve gotten them [elevated] a little better for the most part. So getting the heaters up and the splitters down has helped me out a lot with the lefties. That’s really been the main thing.”

David Laurila: Why is the splitter so much better than the changeup you were throwing? Read the rest of this entry »

On Sunday evening, Camilo Doval stepped to the mound without his usual light show. He showed the range of his game right away – after striking out the first two batters he faced, he walked Greg Jones, who promptly stole both second and third. Then Nolan Jones ripped a scorching line drive to center for a triple, Elehuris Montero stroked a line drive single, and two runs had scored just like that. To make matters worse, this wasn’t even against the Rockies – it was against the Triple-A Albuquerque Isotopes.

It’s hard to wrap your head around Doval’s sudden fall from ace closer to minor leaguer. He debuted in the magical 2021 season, picked up closing duties at the tail end of that year, and looked like one of the best relievers in the sport almost immediately. In 2022 and ’23, he pitched to a 2.73 ERA and 2.87 FIP. He was wild at times, overpowering at others, and impossible to square up in every iteration. When you have a 100 mph cutter and a tight 90 mph slider to throw off of it, you don’t need much else. He was fifth in baseball in saves, ninth in reliever WAR, 10th in innings pitched among relievers; in other words, he was a one-man back-of-the-bullpen for the Giants.

One thing always bothered me about Doval, even when he was dominating the opposition for the last two years: His cutter doesn’t cut correctly. That sounds nonsensical, or at best like a weak nitpick. But here, take a look at his cutter as compared to Emmanuel Clase’s best-in-class offering, using our pitch-type splits:

The “cut” in a cutter refers to glove-side movement. A good cutter looks like a fastball out of the hand before the spin takes over; then it veers sharply away from the four-seam path that hitters have spent their whole lives tracking. It’s not just a matter of how differently shaped the cutter is from the rest of a given pitcher’s arsenal – just ask Mariano Rivera. Instead, it’s more about defying the brain patterns batters have built up over decades of playing baseball. That’s just not where a fastball should go, and so hitters either swing fruitlessly over it or, in the case of opposite-handed batters, end up breaking their bats when the pitch bores in on their hands.
Read the rest of this entry »