Vikings rookie running back Dalvin Cook, who had gained over 100 total yards in two of his first three games, left today’s game against Detroit with a non-contact knee injury. He’s been ruled out for the rest of the day.

Cook took a run through a hole and found some space, but before he was tackled, he appeared to pull up and grab his left knee, dropping the football in the process. Here’s how it looked:

Despite a strong 2-1 start, the Vikings offense is now in trouble. In Cook and QB Sam Bradford, they’re missing two of their most important players.

UPDATE (5:10 p.m. ET): Damn, it doesn’t look good: