San Diego Padres reliever Mason Miller was bringing the heat on Tuesday night. Arizona Diamondbacks outfielder Lourdes Gurriel Jr. returned the favor. Gurriel crushed a 103.

The Diamondbacks' Lourdes Gurriel Jr. hit a home run off a 103.9-mph pitch by the Padres' Mason Miller. It's the fastest ...

Miller, who has thrown the fastest pitch in MLB this season, spared no velocity in the at-bat with Gurriel, as the Padres reliever hurled two other pitches clocked at 103 mph or higher, both of which ...