Last week, I saw Aaron Ashby lean on his loopy curveball when he found himself in a jam:

Later that day, I was watching the Tigers when Drew Anderson used his own big hook to finish off an at-bat:

I’m a longtime admirer of the giant 12-to-6 curveball, a pitch that is on the decline across the majors. There’s a good reason for that – without delving into it too deeply, velocity is very important. The league-wide curveball rate is down by nearly a quarter over the last decade, and the curves that remain tend to be harder and sharper than the ones I grew up seeing. But no amount of cold hard data about the pitch’s effectiveness would make it less visually enjoyable for me. So in this, the age of the looping breaker’s decline, I set out to find some good examples of my favorite pitch, even as guys throw it less and less frequently.

How do you define a looping curveball? My first thought was to look for the curveball that falls the most from its initial trajectory as it heads home. There’s just one problem with that definition, and that problem’s name is Victor Robles:

Amazingly, this clip doesn’t come from either the 22-0 or 19-2 blowouts the Mariners endured last week; they’re having some kind of month on the “getting blown out” front. But that perfectly located curveball had an absurd amount of downward movement because he threw it at 46 mph. I don’t even think it’s a curveball, to be honest; Statcast says it had nearly a foot of positive vertical break from backspin. In any case, clearly this criteria isn’t sufficient for our purposes. Read the rest of this entry »

Sunday afternoon, the Astros gave up seven unanswered runs to lose to the A’s 7-6. That loss, against the team with the worst record in the American League, dropped Houston below .500 for the first time this month, and into a tie with the Texas Rangers for the AL West division lead. That was the last game of a 3-9 homestand. The capper to this bummer of a fortnight in Houston followed promptly; the team and GM Dana Brown mutually agreed to part ways Sunday evening, which is team-and-manager speak for firing him.

Boy, am I bummed that I’ve already made an Apollo 13 reference about the Astros this year. Two in the same season would just be too many. So allow me to use some Shakespeare instead: Something is rotten in the state of Texas. While a 12-game stretch of poor play is a strange reason to change GMs, this move wasn’t about a couple of poor weeks of play. Instead, it’s about the last couple of years of poor play; the once-dominant Astros missed the playoffs in 2025, and this year they’re on track for their worst record since 2014 (excluding the pandemic-shortened 2020 season, when they went 29-31 but still made the playoffs). The farm system is one of the worst in baseball – 29th in our farm system rankings. The big league team has been outscored by 44 runs this year, and BaseRuns suggests Houston has played even a bit worse than that. Things really have deteriorated in Space City.

What’s meaningfully less clear is how much of that blame should be apportioned to Brown. He joined the Astros immediately after their 2022 World Series victory, replacing the departing James Click. Not many incoming GMs inherit a roster that just won the whole ball of yarn, but that cuts both ways. Brown inherited a great roster as well as the kind of dysfunction that leads a team and its GM to split up while simultaneously reaching the peak of the sport. Read the rest of this entry »

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Welcome to Mathemadage, a new series where I investigate time-honored baseball adages using whatever data I can get my hands on and explore whether there’s any validity to them. I’ll apply my normal Ben Clemens mixture of a bit of math, a bit of intuition, and plenty of healthy doubt in declaring strong solutions to complicated problems. I hope to demonstrate that some of these true and others false, but I’m sure that many will end up in a suggestive but unprovable middle ground. And true to the premise of the series, we’re starting off with a fun adage that resists easy conclusions.

If you watch a baseball game from start to finish, you’re pretty much guaranteed to see a hitter get tied up on an inside fastball. “Got jammed,” the announcer might say, or maybe, “He just couldn’t get around on that one.” It’s a visual reminder of one of the pitching truisms that I learned as a kid and haven’t forgotten since: hard in, soft away.

I intuitively look for this pitching pattern when I’m watching a game. Hitters look incredibly uncomfortable when they’re trying to get their bat around a fastball in on their hands. Now that we have a few years of bat tracking data, though, I can do better than just vaguely searching for this effect. So this week, when I saw someone get jammed, I winced in sympathy and then started furiously downloading spreadsheets. Read the rest of this entry »

After taking a few months off from releasing new experimental data visualization options in the FanGraphs Lab, I’m happy to announce that we’re back at it. Meet the Count Progression tool:

With the advent of the ABS challenge system, this year’s league-wide walk rate has been in the news. The first month of the season featured a huge number of walks, and while subsequent months haven’t been quite as extreme, we’re still tracking for the highest full-season walk rate of the 21st century (2020 was weird, naturally). When I was tracking down where those extra walks were coming from back in May, I came up with the idea of looking at each count in isolation to hunt for changing behavior. This tool is an offshoot of that line of research. Read the rest of this entry »

There are a lot of great statistics in baseball these days. They measure everything! Swing path tilt? Contact point against center of mass? Exit velocity? Hard-hit rate on opposite field line drives? You can get a report on any of those things at the wave of a few fingers. Expected wOBA? Barrel rate? There are acronyms and stat blends and projection aggregates for days. It’s analysis paralysis; the hard part isn’t finding stats to describe hitters, but figuring out which ones not to use.

I don’t have a foolproof method for seeing through all the noise for you. But I do have a fun experiment in how to work with statistics in such an overwhelming environment. I want to suggest a method that I call, These Things Are Good. Basically, it boils down to this: Come up with some statistics that you think are good without pre-determining which players you’re looking for, measure how good the entire league is at your statistics in question, and see what shakes out.

How should we do this in practice? I started by saying that I think pulling the ball when you hit it in the air is good. That gives me the first statistic I care about: air pull rate. I turned that into standard deviations for every player in baseball so that we could compare apples to apples across multiple statistics, then started looking for who the standouts were across all categories.

Air pull rate is nice, but it’s certainly not the only statistic that I’m interested in. Next, I wanted guys who hit the ball hard when they put it in the air. After all, exit velocity matters far more when batters can elevate. I did the same thing and put that in z-score terms via standard deviations. If you’re wondering what kinds of hitters these two categories identify, Kyle Schwarber, Griffin Conine, and Junior Caminero are the top three. Read the rest of this entry »

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I might have a thing for guys who throw a lot of different fastballs. Earlier this week, I looked into Drew Rasmussen’s novel approach to pitching: just make the entire arsenal out of fastballs. Rasmussen used to mix four-seamers and cutters, but then he added a sinker and kicked things up a notch. The multi-fastball approach has swept baseball in recent years, in fact, to the point where pitchers with only one option in their toolkit now stand out to me. But I think I’ve seen a new variation. Ben Joyce throws two fastballs, and one of them is an offspeed pitch.

You probably think of Joyce as one of the hardest throwers in baseball, if you think of him at all. He was a standout at Tennessee, showing big league velocity while closing games for the Vols. He threw a pitch 105.5 mph in 2024, still one of the five fastest pitches recorded in the Statcast era. He’s always been a little wild. He reaches back for everything he possibly has. It’s the kind of profile that makes you wonder what he’s going to pair with that absurd fastball.

In 2024, Joyce started experimenting with a splinker, a splitter/sinker hybrid. He turned to that pitch partway through the year after discussing sinker grips with some of the other Angels pitchers, and he spent a lot of that season playing with the different ways he could throw it. It was very much still a work in progress – he changed the shape and velocity of it quite a lot as he learned the grip – but adding something that sat between his fastball and slider was a great success, so much so that Michael Baumann blogged about his two fastballs way back in January 2025. Then Joyce got hurt five games into the year, had shoulder surgery, and missed the rest of the season. Read the rest of this entry »

The Detroit Tigers are one of the hottest teams in baseball. Since the calendar flipped to August, they’ve gone 7-3, scoring more than six runs per game in the process. In a muddled American League, that puts them right in the thick of the AL Central and Wild Card races. That, in turn, means they’re back in the hunt for a World Series ring. This burst of activity has them about as likely to make the playoffs (and win a ring) as they’ve been in the last few months, in fact; they’re back above 30% to reach October after dropping as low as 18% the day they traded Tarik Skubal.

That feels weird! Less than two weeks ago, the Tigers traded their best player, perhaps the best pitcher in baseball, for three prospects. They followed that up by trading Casey Mize, who had briefly inherited the title of top Tigers pitcher. It was a classic deadline sale – not a thread-the-needle plan with some additions and some subtractions, but a declaration that the plan was to get ‘em next year, and the years after that.

Does this mean the Tigers shouldn’t have traded Skubal and Mize? I’m not here to opine on that (OK, fine I’ll opine at the end of the article, but you have to read it first). But they did make those trades, and they did go on that hot streak, so here we are. The Tigers can’t un-trade those guys. MLB doesn’t have a takebacks rule. But I can’t help but wonder how the Tigers would look if they hadn’t made any moves at the deadline, and so I decided to write about it.
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I generally find discussions of the most underrated player in baseball to be tedious. Whose rating are we using? Relative to what? Does being the most underrated player in the game two years in a row imply something uncomfortable about our own ability to update our priors? Heck, does repeatedly earning the mantel of “most underrated” render you ineligible for the title? How underrated can José Ramírez be when every single FanGraphs reader knows how underrated he is? Anyway, today’s article is a case of “do what I say, not what I do.” Because I’ll just say it: Drew Rasmussen is the most underrated player in baseball.

I know, I know! That whole intro paragraph tells you how silly this formulation is. But I was moved to look more closely at Rasmussen for two reasons. First, there was this tweet from Tom Tango:

Since 2021, among pitchers with 500+ IP, there are 10 pitchers in the top 15 in each of ERA, FIP and Statcast ERA (xERA)

From highest to lowest career WAR:

Kershaw
Sale
Cole
Wheeler
Fried
Skubal
Burnes
Woodruff
Ohtani
Rasmussen

Sale + Ohtani are only ones in top 5 in all 3 pic.twitter.com/jF7ZVUWmDs

— Tangotiger ? (@tangotiger) August 9, 2026

Not a list I expected to find him on. Second, this interview he did with our own David Laurila fascinated me. Rasmussen doesn’t look much like he did when the Brewers traded him to the Rays for Willy Adames back in 2021. This guy has remade his entire arsenal and approach, and he’s become one of the best pitchers in baseball by doing so. Read the rest of this entry »