Hamilton Tiger-Cats QB Jeremiah Masoli came out of Friday's game against the Winnipeg Blue Bombers in the first quarter and did not return to the game.
Masoli was dropping back as a result of pressure from the Bombers' defence when his leg buckled and he fell to the turf.
Backup Dane Evans replaced Masoli on the next play and lined up under centre for the Ticats the rest of the way. Hamilton went on to win 23-15.
Masoli was able to walk to the sidelines on his own accord. He was assessed by trainers with his helmet on, giving the impression that he may be able to return.
After the assessement, Masoli went to the locker room and returned without his gear.
Ticats head coach Orlando Steinhauer said that Masoli will get "further imaging"
Week 7 in the CFL wraps up with the Saskatchewan Roughriders paying a visit to the BC Lions Saturday night.