The Astros placed Trammell on the 10-day injured list Tuesday with a left groin strain.
Trammell was hurt in Monday's game versus the Guardians while running the bases. The Astros haven't revealed the grade of the strain, but it's bad enough to keep Trammell sidelined at least for the next 10 days. With Trammell joining Jake Meyers (oblique) on the IL, Brice Matthews is getting a start in center field Tuesday.