
Minnesota Vikings rookie running back Dalvin Cook suffered a serious-looking potential knee injury on Sunday.
Cook suffered the injury about midway through the third quarter of the Vikings’ game against the Detroit Lions. His knee appeared to buckle as he cut, and it looked like a serious injury.
Dalvin Cook is hurt. Grabbing his left knee. Looked like it just went out as he cut.
— Tom Pelissero (@TomPelissero) October 1, 2017

Dalvin Cook appeared very emotional on sidelines, near tears, from an injury. Walking gingerly off w/trainers now. Knee appeared to buckle
— Jason La Canfora (@JasonLaCanfora) October 1, 2017
Cook will require an MRI to determine just what happened to him, but it looks like a very serious injury that could keep him out a while, and Minnesota will surely be fearing the worst-case scenario.