In early April, Davy Andrews penned an article that ran here at FanGraphs and began with the following: “You may have noticed that this is the Year of the Kick-Change.” My colleague went on to explain the pitch, which by now most people reading this are well familiar with. Our own coverage of the popular offering also includes an interview with Davis Martin and Matt Bowman from last September, and a feature from this spring on Hayden Birdsong, who throws a kick-change, and his teammate Landen Roupp, who does not. The pitch is thrown exclusively (at least to my knowledge) by supinators such as Martin, who explained that spiking his middle finger on a seam allows him to “kick the axis of the ball into that three o’clock axis [and] get that saucer-type spin to get the depth that a guy who could pronate a changeup would get to.”

Thinking about the pitch recently, a question came to mind: What would happen if a natural pronator tried to throw a kick-change?

In search of an answer, I queried three major league pitching coaches, as well as Tread Athletics’ Leif Strom, who in addition to having hands-on knowledge of the kick-change is credited with coining the term. Their responses varied. Moreover, they meandered a bit — but in a good way — as they offered insight into the science of throwing a baseball from a mound.

Here is what they had to say.

The following answers have been lightly edited for clarity.

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Desi Druschel, New York Mets

“There are a couple of ways to look at the kick-change. Most people interpret it as, ‘the spike kicks the axis,’ but I’m not necessarily convinced. Another thought is that [the middle finger] is just out of the way, and the ring finger kind of swipes below it. You’re kicking the axis, for sure, but I don’t know if it’s always kicking it how people might think. That would be on the one where there is more supination. Read the rest of this entry »

Tanner Houck has had a tough start to his 2024 season. Prior to going on the injured list in mid-May with an elbow strain, the 28-year-old Boston Red Sox right-hander logged an 8.04 ERA over nine mostly tumultuous outings. His track record shows that he is far better. Houck’s year-to-year consistency has been a bit on the uneven side, but he nonetheless possesses a 3.97 ERA and a 3.71 FIP since reaching the big leagues in 2020. Last season was his best. A mainstay in Boston’s rotation, he made a career-high 30 starts and put up 3.9 WAR and a 3.12 ERA.

His future role was in question when our 2019 Red Sox Top Prospects list was published in January of that year. As Eric Longenhagen and Kiley McDaniel explained at the time, some scouts preferred the 24th overall pick in the 2017 draft as a starter, while others saw him as a reliever. Our prospect analyst duo ranked the University of Missouri product fifth in the system and assigned him a 40+ FV.

What did Houck’s 2019 FanGraphs scouting report look like? Moreover, what does he think about it all these years later? Wanting to find out, I shared some of what Eric and Kiley wrote and asked Houck to respond to it.
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“Houck was a projection prep arm from Illinois whose price was just high enough to get him to Missouri.”

“I committed to Mizzou fairly early in the process,” explained Houck, who was born in St. Louis and attended high school in nearby Collinsville, Illinois. “I really wasn’t a big prospect. I was only throwing 84-87 [mph] at the time. So that was probably a fair judgement. I definitely grew up and got stronger. I filled out my frame a little bit. Read the rest of this entry »

Mikey Romero has hit a few speed bumps since the Boston Red Sox drafted him 24th overall in 2022 out of California’s Orange Lutheran High School. A back injury limited the 21-year-old multi-position infielder to just 34 games in 2023, and he then didn’t return to game action until last May. He also missed time in August after suffering a concussion.

When healthy, it’s been mostly smooth sailing for the former first-rounder. [Boston took Roman Anthony 16 picks later the same year]. Romero’s last-season ledger included 16 home runs and a 125 wRC+ over 362 plate appearances between High-A Greenville and Double-A Portland.

He’s off to a strong start in the current campaign. Back at the higher of those levels, Romero is swinging to the tune of a 134 wRC+ in 154 trips to the plate. Fully half of his 34 hits have gone for extra bases. The San Diego native’s smooth left-handed stroke has produced 10 doubles, a pair of triples, and five home runs.

As the season was getting underway, I asked the promising youngster how he’s grown as a hitter since joining the professional ranks. Read the rest of this entry »

Joe Ryan has developed into one of the better pitchers in the American League. So far this season, the 28-year-old Minnesota Twins right-hander has a 5-2 record to go with a 2.57 ERA, a 3.19 FIP, and a 29.8% strikeout rate over 63 innings. Moreover, he’s been rock solid since debuting with the AL Central club in September 2021. His career ledger includes a 3.76 ERA and a 3.77 FIP over 533 1/3 frames, with all but one of his 95 appearances coming as a starter. The lone exception was working five innings as a bulk reliever in the resumption of a suspended game earlier this month.

His prospect profile wasn’t particularly high. Drafted 210th overall by the Tampa Bay Rays out of California State Stanislaus in 2018, Ryan proceeded to pitch well in the minors, but he was largely overshadowed. When our 2020 Tampa Bay Top Prospects list was published in March of that year, Eric Longenhagen wrote that the Rays possessed “one of the, if not the, best farm systems in baseball.” He ranked Ryan 13th in the organization and assigned him a 45+ FV. The Rays subsequently sent Ryan to the Twins in their July 2021 trade for Nelson Cruz.

What did Ryan’s 2020 FanGraphs scouting report look like? Moreover, what does he think about it all these years later? Wanting to find out I shared some of what our lead prospect analyst wrote and asked Ryan to respond to it. Read the rest of this entry »

Ryan O’Hearn has been the best hitter on an underachieving Baltimore Orioles team so far this season. Moreover, he’s been one of the best hitters in the game. The 31-year-old first baseman/outfielder boasts a 185 wRC+, a mark currently topped by only Aaron Judge, and Freddie Freeman. Over 180 plate appearances, O’Hearn has left the yard nine times while slashing .340/.428/.558.

He began to bash after leaving Kansas City, where he posted a .683 OPS over parts of five nondescript seasons with the Royals. He was designated for assignment and subsequently dealt to the Orioles in exchange for cash consideration in January 2023. Baltimore then dodged a bullet. The O’s also DFA’d him, only to see him go unclaimed, allowing them to assign him to their Triple-A roster. Called up to the majors two weeks into the 2023 campaign, O’Hearn proceeded to do what he hadn’t done with his old team: square up baseballs on a consistent basis.

Since the start of the 2023 season, the left-handed-hitting O’Hearn has the highest batting average (.286) and on-base percentage (.346), and the second-highest wRC+ (130) among Orioles who have come to the plate at least 250 times. Playing primarily against opposite-handed hurlers, O’Hearn has logged 1,042 plate appearances over that span.

How did he go from the waiver wire to laying waste to big league pitching? Read the rest of this entry »

Earlier this month, an article titled “Executive’s View: How Have Analytics Impacted a General Manager’s Job?” was published here at FanGraphs. Featured were Ross Atkins, Brian Cashman, Jerry Dipoto, and John Mozeliak, with the foursome sharing their perspectives on this ever-evolving aspect of their shared position.

Shortly after the piece ran, two people suggested David Stearns as a followup interview subject. That’s understandable. Now in his second season as the president of baseball operations for the New York Mets, the 40-year-old Ivy League product has two decades of experience within the industry, almost all of it in front offices.

A summer intern with the Pittsburgh Pirates prior to graduating from Harvard University in 2007, Stearns subsequently worked in MLB’s central office, then served as co-director of baseball operations with Cleveland, became an assistant general manager with the Houston Astros, and, in 2015, was hired by the Milwaukee Brewers as general manager. His data-driven approach was a common thread throughout. Moreover, he has remained true to his analytic bent since assuming his current position following the 2023 season.

Stearns was at Fenway Park this past week when the Red Sox hosted the team whose front office he now leads, so I took the opportunity to get his perspective on the subject at hand. Here is our conversation, lightly edited for clarity.

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David Laurila: I’ll start with the question I asked Atkins, Cashman, Dipoto, and Mozeliak: How has the continued growth of analytics impacted the job?

David Stearns: “Over the span of my career, we’ve been inundated with more and more sources of information — information sources that are increasingly granular in nature, increasingly have to do with the processes of playing baseball, and not necessarily the results or outcomes of playing baseball. Those lead towards more and more complex algorithms and models that require greater numbers of analysts, and really smart, creative people to have in a front office. So, one of the greatest changes is just the size of the departments within baseball. The information has grown to such a enormous extent that we need more and more people to manage the information. That’s the first thing that comes to my mind. And then we need to make all that information actionable.” Read the rest of this entry »

Spencer Schwellenbach had just two big-league games under his belt when he was featured here at FanGraphs early last June. The most recent of them had come a few days earlier at Fenway Park, where he’d allowed six runs and failed to get out of the fifth inning. Two starts into his career, the Atlanta Braves right-hander was 0-2 with an 8.38 ERA.

Those initial speed bumps quickly became a thing of the past. Schwellenbach allowed three runs over his next two outings, and by season’s end he had made 21 appearances and logged a 3.35 ERA and a 3.29 FIP. Counting this years’s 10 starts, the 24-year-old Saginaw, Michigan native has a 3.41 ERA and a 3.41 FIP over 185 innings. Moreover, he has a 23.5% strikeout rate and just a 4.7% walk rate. Relentlessly attacking the zone with a six-pitch mix, Schwellenbach has firmly established himself as a cog in Atlanta’s rotation.

On the eve of his returning to the mound in Boston last Sunday, I asked the 2021 second-round pick out of the University of Nebraska what has changed in the 11-plus months since we first spoke.

“Honestly, when we talked last year I was just throwing the ball to the catcher,” claimed Schwellenbach, who was a shortstop in his first two collegiate seasons and then a shortstop/closer as a junior. “It was really only my second year as just a pitcher, so I was very young-minded with how I pitched. Now that I’ve got 30 or so starts, I have an idea of what I’m trying to do out there. Being around guys like Max Fried, Charlie Morton, and Chris Sale last year was obviously big, too. I learned a lot from them, as well as from [pitching coach] Rick Kranitz.”

Morton, who is now with the Baltimore Orioles, helped him improve the quality of his curveball. Their mid-season conversation was the genesis of a more efficient grip. Read the rest of this entry »

Connelly Early has emerged as one of Boston’s best pitching prospects. A fifth-round pick in 2023 out of the University of Virginia — he’d spent his first two collegiate seasons at Army — the 23-year-old left-hander has a 40.4% strikeout rate, a 1.88 ERA, and a 1.73 FIP over six appearances comprising 24 innings with Double-A Portland. Moreover, he’s allowed just 12 hits, none of which have left the yard. Assigned a 35+ FV when our 2024 Red Sox Top Prospects list came out last July, he was recently added to The Board for 2025 and bumped up to a 45+.

Early began opening eyes last summer in his first full professional season. Effectively establishing himself as a sleeper within a well-stocked Red Sox system, the Midlothian, Virginia native threw 103 2/3 innings between his current level and High-A, logging a 3.99 ERA and a 3.24 FIP, as well as a 30.8% strikeout rate that ranked highest among Boston farmhands who threw at least 80 frames. Early did so with both a better understanding of his craft and a revamped repertoire.

“From college, the only same grip I have is my [four-seam] fastball,” Early told me at the onset of the current campaign. “My changeup is completely different. The curveball grip is different. The sweeper is completely new. My cutter/gyro slider is pretty much the same, but I’ve worked a lot more on it this year than I did in college.” Read the rest of this entry »

Austin Riley was relatively raw when our 2017 Atlanta Braves Top Prospects list was published in February of that year. Six weeks short of his 20th birthday, he was coming off of a Low-A season in which he logged 20 home runs and a 124 wRC+, but also fanned 147 times. With lingering concerns about both his contact profile and conditioning, Eric Longenhagen conservatively ranked Riley no. 28 in a then-strong Atlanta system.

Riley has obviously gone on to have a highly successful career. Since debuting with the Braves in May 2019, Riley has put up a 124 wRC+ and 19.9 WAR across parts of seven seasons, slugged 30-plus homers in three different years, and made a pair of All-Star teams. A mainstay in the middle of Atlanta’s lineup, the 41st-overall pick in the 2015 draft out Southaven, Mississippi’s DeSoto Central High School has developed into one of the senior circuit’s top sluggers.

What did Riley’s 2017 FanGraphs scouting report look like? Moreover, what does he think about it all these years later? Wanting to find out I shared some of what our lead prospect analyst wrote and asked Riley to respond to it.

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“Riley began the year struggling with any sort of velocity and then improved the timing of his footwork, quieted his hands and started hitting. Late in the year, he was turning on plus velocity.”

“Very accurate,” Riley said. “Coming out of high school, I hadn’t seen velo a lot, and I kind of had a lot going on with my swing. I needed to make some adjustments. Being a bigger guy, a power guy, it was kind of, ‘All I have to do is touch the ball, get a barrel to the ball.’ It was one of my first steps in learning how to shorten everything up and just get a barrel to it. From there, good things happen.”

“He has plus raw power (at least) and has improved his body composition since high school (when he was a heavy 230). But at just 19, with some general stiffness to his actions, Riley is pretty likely to kick over to first base as he matures.” Read the rest of this entry »

Mason Fluharty is flying under the radar as one of baseball’s most effective lefty relievers. Since making his major league debut with the Toronto Blue Jays on April Fools Day, the 23-year-old southpaw has a 1.96 ERA and a 2.94 FIP over 18 appearances. Moreover, he’s allowed just seven hits in his 18-and-third innings, and prior to surrendering a solo home run to former Jay Danny Jansen this past Tuesday he’d retired 21 consecutive batters. All three of his decisions are in the win column.

His initial two outings were especially challenging. The first batter Fluharty faced in the bigs was Washington Nationals 2024 All-Star CJ Abrams, who lined a run-scoring double. Three days later, the first batter in his second outing was Juan Soto; the New York Mets superstar also stroked a run-scoring double.

I asked the 2022 fifth-round pick out of Liberty University about those welcome-to-the-big-leagues ABs prior to his third appearance.

“Get put into the fire and see what happens,” said Fluharty, who later that same day faced Rafael Devers [E-6], Alex Bregman [K], and Rob Refsnyder [DP]. “I’m glad they have faith in me. While I obviously would have preferred better outcomes in those first outings, it’s all about adjusting. This game is hard.”

The pitches that were turned around for two-baggers? Read the rest of this entry »