The Blue Jays placed Corbin on the 15-day injured list Thursday with a left teres major strain.
Manager John Schneider revealed Corbin has been dealing with the injury since before the All-Star break, and the lefty will be shut down for "multiple weeks" after an MRI showed a strain, per Arden Zwelling of Sportsnet.ca. Corbin has been pitching in a long-relief role in July.