July 7
Wil Myers of the Padres hit three home runs in a 15-run loss (Diamondbacks 20, Padres 5), a new record for the largest loss by a player who hit three homers in a game. The previous record was set 124 years ago, when Jake Manning hit three homers on October 9, 1884, but he and the Phillies lost to the Cubs 19-7.
In the Myers game, Jake Lamb had a 4-3-0-0 batting line. The last player to have that batting line was Tony Gwynn Jr. of the Dodgers on June 2, 2012.