Perez won't pitch against the Giants on Thursday, as the game was postponed due to rain.
Thursday's contest has been rescheduled for Aug. 31, and it's likely that Perez's next start will now come Friday against Milwaukee. The 35-year-old has been fairly consistent all season, pitching to a 2.90 ERA and 1.05 WHIP across 14 appearances (10 starts), and he's recorded a win in each of his last three outings.