Freddy Peralta’s fastball has taken on a different life in October, and the numbers tell the story better than any eyeball test ever could. Through four postseason outings, his four-seamer has averaged 96.9 mph, and he’s going to the pitch 67.1% of the time. In the regular season, that same heater sat at 94.3 mph.
That kind of jump is rare. In fact, Peralta’s +2.6 mph gain from the regular season to the postseason is the second-largest in the pitch-tracking era, dating back to 2008. The only pitcher ahead of him, among those who threw at least 75 four-seam fastballs in a single postseason, is the Dodgers’ Roki Sasaki, whose fastball jumped +2.8 mph in the 2025 postseason.
Peralta is in a pretty small club even beyond that. Since tracking began, there have only been a handful of cases where a pitcher has improved his four-seam velocity by more than 2.0 mph in October.
The list includes Kevin Gausman in 2014, José Leclerc in 2023, Tanner Rainey in 2019, Ryan Madson in 2008, Jered Weaver in 2009, and Jon Lester in 2008. Lester is the best comparison, and really the only one that looks like Peralta in terms of role.
The left-hander made four starts for the Red Sox in that postseason and lifted his fastball from 93.1 mph to 95.1 mph.
Peralta’s case stands out because this isn’t some bullpen-only burst. He threw six four-seamers in a three-batter relief appearance in Game 4 of the ALCS and averaged 97.5 mph there, but even if you strip those pitches out, his postseason average is still 96.9 mph - still a +2.6 mph increase from the regular season.
The broader October trend is real, too. Fastball velocity rises every postseason in the pitch-tracking era, and this year is no exception.
So far in 2026, the average four-seam fastball is being thrown at 96.3 mph, the fastest single-postseason mark under tracking. That’s nearly a full tick above the 2024 postseason and a sharp move from the regular-season average of 94.8 mph.
The reasons are familiar enough: shorter leashes for starters, more relief usage, and the adrenaline that comes with October. Peralta has said that adrenaline has helped his velo after each of his three postseason starts. But this looks like more than a simple emotional bump.
He’s throwing the pitch harder and more often than anyone else in the postseason. In Game 6 of the ALCS against the Guardians, Peralta fired 33 pitches at 97.0 mph or higher.
That series also included five of the fastest pitches of his career, topped by a 99.4 mph fastball to Jo Adell. In all three of his postseason starts, he has reached at least 20 pitches at 97.0 mph or above.
Before this month, his career high in a single game was 18 such pitches.
The consistency is what jumps off the page. Out of 173 four-seam fastballs this postseason, only one has been 94.3 mph or slower. Every other fastball has been faster than his regular-season average.
Tampa Bay’s work with Peralta has already been a big part of the story. After acquiring him from the Mets at the Trade Deadline, the Rays made him more comfortable by moving away from his hands-over-head windup.
Pitching coach Kyle Snyder and bullpen coach Jorge Moncada also helped him speed up his delivery and recover some of the elite extension that gives his fastball extra life. The Rays also asked him to lean more on his changeup, which fits the organization’s long-running preference.
Even so, the velocity spike didn’t happen right away. In his first three starts with the Rays, Peralta’s fastball averaged just 93.8 mph.
The first real signs came in September. On Sept. 19 against the Red Sox, he threw 58 four-seam fastballs and averaged 96.4 mph, his fastest single-game average since 2019.
His next outing, against the Phillies, he sat at 96.2 mph. Since then, the heater has only kept climbing.
That is a major reason the Rays are handing him the ball for Game 3 of the World Series on Monday night as the series shifts to St. Petersburg.
Peralta isn’t easing into October. He’s letting it fly.
In Other News...
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The comments quickly got attention because they put an unusual ballpark feature into the middle of a series Milwaukee already leads 2-0, with Megill continuing to be one of the bullpen arms that has mattered most this postseason. For the Rays, it is another reminder that home-field factors do not always play out as an advantage, especially when an opponent is already comfortable enough to say so out loud. [Read more 🡒]
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Brewers Face One Huge World Series Concern With Game 3 Here
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From the other dugout, Pat Murphy sounded aware that the Brewers have already asked plenty of their high-leverage relievers early in the series. Aaron Ashby and Abner Uribe have been worked hard through the first two games, which only adds to the pressure on Milwaukee as the series moves into a park where Tampa Bay badly needs a clean, steady start. [Read more 🡒]