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Gurriel Homers Off 103.9 MPH Fastball for Record, Diamondbacks Lose in 11 Innings

The homer underscores MLB’s rising fastball velocities in the pitch-tracking era.

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ACRAMENTO, CALIFORNIA - AUGUST 03: Lourdes Gurriel Jr. #12 of the Arizona Diamondbacks stands in the dugout in the third inning of their game against the Athletics at Sutter Health Park on August 03, 2025 in Sacramento, California.
Aug 5, 2025; Phoenix, Arizona, USA; Arizona Diamondbacks outfielder Lourdes Gurriel Jr. (12) reacts after hitting a home run in the fifth inning to tie the game against the San Diego Padres at Chase Field. Mandatory Credit: Allan Henry-Imagn Images

Overview

  • Gurriel tied the game with a two-run shot off Mason Miller’s 103.9 mph heater, the fastest pitch ever homered off since MLB began tracking velocities in 2008.
  • His eighth-inning blast left the bat at 107.1 mph and traveled 439 feet, and he also homered in the first inning off Yu Darvish for his first multi-homer game since June.
  • Mason Miller, acquired by San Diego at the trade deadline, has now thrown three of the nine fastest pitches ever hit for home runs.
  • Arizona starter Ryne Nelson recorded eight strikeouts over 5.2 innings, but the bullpen surrendered five runs in the 11th to seal a 10-5 defeat.
  • The night’s milestones illustrate how advanced velocity tracking has reshaped player achievements and late-season matchups.