Slater went 1-for-2 with a three-run home run in Tuesday's 8-2 win over Oakland.
Slater entered the game for Joc Pederson in the fifth inning and smashed a three-run shot off Oakland reliever Jacob Lemoine to extend the score to its eventual 8-2 final. The 29-year-old is on the weak side of a platoon and doesn't have a clear path to substantial playing time.