When the Montreal Alouettes play host to the Calgary Stampeders on Thursday, they might not have the services of starting quarterback Anthony Calvillo.
Head coach Marc Trestman told the media on Monday that Calvillo will undergo an MRI on his sore left shoulder.
During Friday's win over Winnipeg Blue Bombers, Calvillo hurt the shoulder sliding to the ground and being hit by a Bombers' player.
Calvillo was in the dressing room briefly, and returned in the quarter and finished the game, leading the Alouettes to a 41-30 win.
- With files from RDS.ca