McKinnon had nine carries for 15 yards, including a one-yard touchdown, in Thursday's preseason win over Seattle. He also had one reception for five yards.
McKinnon and the Vikings offense had a tough time running the ball against Seattle's starting defensive line. McKinnon is the clear backup to Adrian Peterson; the real question is whether he'll get to serve as the third-down back. McKinnon did drop one pass out of the backfield, but otherwise it was hard to get a good read on his planned regular-season role with backup Shaun Hill getting the start at quarterback.