The Hamilton Tiger-Cats will have to get through the rest of the season without starting quarterback Zach Collaros.
Collaros is out for the season with a torn ACL, the team announced Monday. He went down with the injury in Saturday's loss to the Edmonton Eskimos.
The signal caller leads the CFL in passing yards with 3,376 and touchdown passes with 25.
Backups Jeff Mathews and Jacory Harris will now take over for the first-place Tiger-Cats.