Raise your hand if you, like me, often check the radar gun after a pitch while watching an MLB game.
It can be so much fun to see how hard pitchers throw these days, with guys consistently touching triple digits. But who are the hardest throwers in baseball?
Baseball Savant helps answer that question with its pitch arsenal leaderboard, which tracks the average velocity of each pitch. For this page, I’ll focus on the average four-seam fastball since that is typically the fastest pitch in an arsenal.
Hardest-Throwing Pitchers in MLB
| Player | Team | Average 4-seam velocity |
|---|---|---|
| Mason Miller | SDP | 101.3 mph |
| Edgardo Henriquez | LAD | 100.6 mph |
| Jacob Misiorowski | MIL | 100.5 mph |
| Jhoan Duran | PHI | 100.2 mph |
| Sam Bachman | LAA | 99.5 mph |
| Andres Munoz | SEA | 99.3 mph |
| Adrian Morejón | SDP | 99.2 mph |
| Chase Dollander | COL | 98.9 mph |
| Juan Morillo | ARI | 98.6 mph |
| Jared Jones | PIT | 98.6 mph |
Who is the Hardest-Throwing Pitcher in MLB This Season?
Among qualified pitchers, San Diego Padres reliever Mason Miller has the highest average four-seam fastball velocity at 101.3 miles per hour during the 2026 MLB season.
Which Left-Hander Throws the Hardest in MLB?
Padres reliever Adrian Morejón has the highest average four-seam velocity (99.2) among all qualified left-handed pitchers in 2026.
Who is the Hardest Thrower in the Statcast Era?
Baseball Savant’s data only goes back to 2017, but Minnesota Twins reliever Jhoan Duran has recorded the highest average four-seam fastball velocity over an entire season. He averaged 101.8 mph on his four-seamer in 2023.
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