Perez was removed from Friday's game against the Giants due to left abdominal tightness, Jason Beck of MLB.com reports.
Perez drew a walk and struck out before being pulled from the game in the fourth inning. He'll presumably undergo further testing to determine the severity of his injury. Bligh Madris entered as the 24-year-old's replacement, but Parker Meadows could begin to see more work against left-handed pitching if Perez is forced to miss any time.