After starting the first 7 games of the 2008 season, Keasey was placed on injured reserve in week 8 with a torn biceps tendon. He was replaced in the 49ers starting lineup by all purpose back Michael Robinson.
After playing the initial seven games of the 2008 season, Keasey was sidelined due to a torn biceps tendon and replaced in the 49ers' starting lineup by Michael Robinson.