Manager John Gibbons said that Donaldson has a strained calf and is day-to-day, Brendan Kennedy of the Toronto Star reports.

EDGE Analysis

Donaldson left Wednesday's game in the seventh inning after limping through a decent chunk of the game, and it appears the calf issue was to blame for the limp. The Blue Jays don't think the ailment is a very big deal, though, which is definitely an encouraging sign that could allow him to get back in the lineup fairly soon. That being said, it would be unlikely that the Blue Jays would push him back to action too hard this early in the season. Thankfully, Toronto has the day off Thursday, so he'll have an extra day to rest prior to Friday's bout with the Red Sox. Donaldson's status should become clearer as game-time approaches Friday.