Donaldson received treatment on his calf Sunday and is optimistic that he'll be able to return Tuesday, Shi Davidi of Sportsnet reports.
Donaldson tweaked his calf during Sunday's game against the Rays and was forced to leave early, but his condition seems to be headed in the right direction. In addition to saying that his injury is fairly minor, Donaldson will be aided by Toronto having Monday off, giving him an extra day to recover.