Orchard Park, NY -- (Sports Network) - Buffalo Bills quarterback Trent Edwards was on the sidelines in the second half of Sunday's 10-3 loss against San Francisco with a groin injury.

J.P. Losman took over under center for the second half with the Bills trailing, 10-0, and took the team to its only score of the game, a 22-yard field goal from Rian Lindell. Losman finished the game 11-for-17 for 93 yards.

Edwards finished the first half 10-of-21 for 112 yards.

Buffalo fell to 6-6 on the season with the loss.