Cobb was placed on the 10-day injured list with a right adductor strain ahead of Game 2 of Tuesday's doubleheader against the Mets.
Cobb exited his start during Game 1 of Tuesday's twin bill after 4.1 innings and will now spend some time on the shelf. It's unclear exactly how much time the 34-year-old will miss, though he'll be eligible to be reinstated from the injured list April 30.