Crawford was placed on the 15-day injured list Sunday, retroactive to Sept. 1, with a right shoulder impingement.
The 26-year-old had already been scratched from Sunday's scheduled start against the Rangers due to the injury, and he'll end up missing some additional time. Crawford's shoulder injury doesn't seem to be overly severe, as manager Alex Cora said he's hopeful that the right-hander will require a minimum-length stay on the IL, per Chris Cotillo of The Springfield Republican. Josh Winckowski was recalled from Triple-A Worcester in a corresponding move and will start Sunday in Crawford's stead.