Mountcastle went 3-for-5 with three RBI in Saturday's 7-5 win over the Rays.
Mountcastle had a two-run single in the first inning and knocked in an insurance run with another single in the eighth. This was the first baseman's first multi-hit effort in August, though he's now hit safely in six straight games. For the year, he's up to a .273/.312/.438 slash line, 13 home runs, 59 RBI, 50 runs scored and three stolen bases over 442 plate appearances. He will continue to see most of the playing time at first base, with Ryan O'Hearn filling in there whenever Mountcastle needs a day off.