Former Detroit Lions running back Stephfon GreenCarlos Osorio/The Associated Press
The Saskatchewan Roughriders have signed running back Stephfon Green and defensive back Ramzee Robinson.
Green returns to the Roughriders after spending the final two weeks of the 2012 season on the team's practice roster. The 23-year-old spent 2012 training camp with the Detroit Lions, registering seven carries for 95 yards and a touchdown in two pre-season games.
The New York native spent four seasons at Penn State, finishing his collegiate career with 285 rushing attempts for 1,351 yards and 14 touchdowns and added another 457 yards on 40 pass receptions.
Robinson also returns to the Riders after spending time on the team's practice roster during the 2012 season. The 28-year-old previously spent time with Denver, Cleveland, Washington and Philadelphia throughout his NFL tenure.
The Alabama graduate appeared in 26 NFL regular season games recording 36 tackles, one pass knock down and one fumble recovery.