The Calgary Stampeders were able to hold on and defeat the Saskatchewan Roughriders Saturday night, but it may have come at a price. 

Starting quarterback Bo Levi Mitchell left late in the fourth quarter and was replaced by Jake Maier. Head coach Dave Dickenson confirmed it was a shoulder issue that forced Mitchell to the sidelines. 

Mitchell went 16-25 with 184 yards passing, two touchdowns and one interception in his fifth game of the season before exiting the action. 

The 31-year-old Mitchell fractured his fibula on the opening day of the season on Aug. 8, but was able to play in Week 2 with the injury before he was placed on the injured list. He returned in Week 6 against the Edmonton Elks. 

Calgary is now 3-5 on the season