Updated April 16, 2026 | Peak fastball velocity (FF/SI) from Statcast data
Velocity isn't everything in baseball, but it sure doesn't hurt. The ability to blow a fastball past a hitter at 100+ mph is one of the most electric skills in the sport, and the 2026 season has no shortage of arms bringing serious heat.
This list ranks the top 25 pitchers by peak fastball velocity this season, using Statcast-tracked data for four-seam fastballs and sinkers. Of the 25 names below, 19 are relievers or closers and 6 are starters, which tracks with the reality that bullpen arms can let it rip without worrying about pacing through six-plus innings.

Nobody in baseball throws harder than Mason Miller, and it's not particularly close. Miller hit 103.4 mph on April 10th and has touched 102+ in four of his five outings this season. What makes him truly terrifying is that his average fastball sits at 101.4, meaning most hitters are seeing triple digits every single pitch. Pairs elite velocity with a wipeout slider that makes hitters look silly.

The other member of the 103 mph club in 2026, and the 22-year-old is making a real case for a high-leverage role in the Dodgers' bullpen. Hit 103.2 on a sinker on April 4th and owns 5 of the top 25 individual pitches thrown this season by velocity. One of only two pitchers in baseball averaging triple digits.

Brought his elite arm to Baltimore this offseason and hasn't missed a beat. Uncorked 102.1 on Opening Day and continues to be one of the premier closers in the American League. His average fastball sits just under 99, which would be the top velo for plenty of other relievers on this list. Says the pitch-tipping issue that plagued his Mets stint is fixed.

Made the move from Minnesota to Philadelphia and immediately stepped into the closer role for a Phillies team with serious October ambitions. His 101.9 mph peak is backed by an average of 98.2, paired with one of the nastiest splitters in baseball. That mid-80s splitter creates a velocity differential hitters simply can't adjust to.

If you're not familiar with Grant Taylor yet, you will be. The White Sox reliever matches Duran at 101.9 for peak, but his average of 99.0 mph actually places him third in average fastball speed across the entire league. That kind of consistency is what separates a guy who can touch triple digits from a guy who lives there.
A few names worth highlighting that didn't crack the top 25 but are throwing serious heat:
About this list: Peak velocity is the single fastest Statcast-tracked pitch (four-seam fastball or sinker) thrown this season. Average fastball velocity reflects the season-long average for those pitch types. Data sourced from Statcast via our upstream data pipeline and the InsidethePen pitcher database. All pitchers must be on an active MLB roster.
Want to dive deeper into any of these arms? Every pitcher name above links to their full InsidethePen pitcher profile with game logs, pitch arsenal, advanced stats, and tendency breakdowns.
Follow us on X @InsidethePen for daily bullpen analysis and insights.
Explore individual Team Bullpen Power Ranking summary pages with trend charts, division comparisons, and key bullpen stats.
View some of your favorite teams: Dodgers, Braves or Yankees
A Note From The Founder
Why We're Adding a Member Login and Subscription Model.
Our Vision For This Site
We've been avid sports enthusiasts and MLB "stats guys" for many years, and we know there are certainly plenty of tools available for all types of baseball analytics and breakdowns.
What we could not find though, was a site that encapsulated the effectiveness of team bullpens. Sure, there are plenty of sites that have advanced Statcast data and include relief pitchers