Keenum is out with a concussion, according to the team.
It appears Keenum was injured on a sack by Vikings defensive tackle Linval Joseph when he came down on his head on second down with 2:05 remaining. Washington’s quarterback stayed in for another down, throwing an incompletion before a Dustin Hopkins field goal.
Washington did not take another snap from scrimmage in the first half.
He went 12-of-16 for 130 yards and lost a fumble before leaving.
Haskins is making his second appearance of the season, with the 15th overall choice making his debut against the Giants in Week Four.
Haskins went 1-for-2 for 6 yards on the opening possession of the second half, forcing the game’s first punt. The Ohio State product was 9-of-17 for 107 yards and three touchdowns in the loss to the Giants.