Diaz went 1-for-4 with a double and an RBI against the Athletics on Wednesday.
Diaz suffered an injury scare Sunday after being hit by a pitch in the arm, but he didn't miss any action and went 4-for-11 with two doubles in the Rays' ensuing three-game series against Oakland. Diaz has had a strong month of August, maintaining a .297 average with six RBI and eight runs scored across 18 games.