Mateo went 1-for-5 with a three-run home run during Friday's 12-8 win against the Red Sox.
Mateo came to the plate with two on and one out during the seventh inning, and he delivered with a three-run home run to start the comeback and bring Baltimore within three runs. Despite hitting his third home run of the season, the 1-for-5 effort dropped the 26-year-old's average to .207, and he's also struck out 15 times in his past 10 games.