Mason Miller Throws Fastest MLB Pitch, Jose Trevino Throws Slowest in 2025 Season

In the 2025 MLB season, Athletics relief pitcher Mason Miller recorded the fastest pitch of the year at 104.1 mph during a game against the Atlanta Braves, showcasing his dominance with multiple pitches exceeding 102 mph. Meanwhile, Cincinnati Reds catcher Jose Trevino threw the slowest pitch of the season at approximately 31.1 mph, an eephus pitch he attempted to use to break the existing slowest pitch record of 31.1 mph held by Brock Holt. Trevino's pitching appearances, often in blowout games, have included a variety of pitches such as fastballs, eephus, and knuckleballs, and he has even struck out a batter in a previous outing. Over the past two decades, MLB pitchers have increased the velocity of their pitches across all types, with changeups and curveballs seeing the largest gains in average speed. The overall pitch velocity increase reflects a growing emphasis on speed in modern MLB, while pitch usage trends reveal a decline in curveball use and a rise in cutter adoption. These developments highlight both the extremes and evolution in pitching styles seen this season.