Cut by Colts
Walker was released by the Colts on Saturday, Jim Ayello of the Indianapolis Star reports.
Struggles in preseason finale
Walker completed eight of 16 passes for 90 yards and added 10 yards on three rushing attempts in Thursday's preseason finale against the Bengals.
Struggles again Saturday
Walker was 6-of-13 passing for 65 yards with an interception and also lost a fumble in Saturday's preseason loss to Chicago.
Improves in second preseason game
Walker was 10-of-17 passing for 109 yards with no interceptions or touchdowns in Thursday's preseason loss to Cleveland.
Struggles in preseason opener
Walker was just 8-for-18 passing for 85 yards with an interception in Thursday's preseason loss at Buffalo.