The third time proved very unlucky for Toronto Argonauts linebacker Brandon Isaac.

The CFL slapped Isaac with a one-game suspension Monday for delivering a helmet-to-helmet hit on Saskatchewan Roughriders quarterback Darian Durant on Saturday night.

Isaac wasn't penalized on the play.

The suspension came following a hearing earlier Monday between Isaac and CFL commissioner Mark Cohon.

This marks the third time the CFL has disciplined Isaac this season.

He was fined both previous times, the first for an illegal hit on Calgary Stampeders tailback Jon Cornish on Aug. 18.