on march 30, 2011 jyles was traded to the toronto argonauts in exchange for a 1st round selection (4th overall) in the 2011 cfl draft and a conditional draft choice in 2012. jyles spent the first nine games of the 2011 season on the nine-game injured list after he continued to recover from the injury he sustained during the previous season. after incumbent starting quarterback cleo lemon was released on september 6, 2011, jyles was named the starter for the team's game against the bc lions on september 10, 2011. jyles would go on to start the following eight games of the season, having sat out the last regular season game due to injury.