With starting quarterback Josh McCown unable to play this week due to a sprained thumb that he suffered in last Thursday’s 56-14 loss at Atlanta, the Buccaneers promoted QB Mike Kafka from the practice squad to the active roster to back up Mike Glennon, who will start this week at Pittsburgh.

To make room for Kafka on the 53-man roster, Tampa Bay released guard Rishaw Johnson, whom it acquired in a preseason trade with Kansas City for safety Kelcie McCray.