Diaz (forearm) is serving as the designated hitter and batting in the leadoff spot in Monday's series opener against Oakland.
Diaz was forced to leave Sunday's game against Arizona after being hit by a pitch on his left forearm. X-rays and an MRI after the game both came back clean, and he will end up not needing to miss any time due to injury. Since the All-Star break, Diaz is slashing .270/.329/.392 with 10 runs scored, two home runs and eight RBI across 82 plate appearances.