Manager Joe Espada stated after Monday's game against the Guardians that Trammell (groin) will "be out for a little bit," Matt Kawahara of the Houston Chronicle reports.
Trammell suffered a left groin injury while running the bases Monday, and it sounds as though he'll require a trip to the injured list. An official move should come at some point Tuesday. Dustin Harris and Brice Matthews could see more time in center field while Trammell is sidelined.