Diaz is out of the lineup for Wednesday's game against the Mariners.
Diaz has been one of the bigger disappointments among fantasy catchers so far this season; he's gone 2-for-33 with no home runs, one RBI and one run scored through the Astros' first 11 games. Though Diaz will be given a breather for the day game after a night game, the Astros will likely continue to allow the 26-year-old to play through his struggles, given the strong production he's provided over the past two seasons.