The Riders have placed receiver Taj Smith on their six-game injured list with a broken clavicle. Smith will be out for at least the remainder of the regular season.
Smith was injured Friday in Saskatchewan's 24-0 road loss to Edmonton.
He had a breakout season in 2013, amassing 1,007 yards and adding seven touchdowns during his team's run to the Grey Cup title.
Smith has 397 yards and three touchdowns on 29 catches this season.