Peterson hopped off the field without putting any weight on his right leg before being helped to the locker room.
The All-Pro back struggled mightily before the injury, amassing just 26 total yards on 14 touches before exiting the game. Vikings head coach Mike Zimmer told reporters after the game that Peterson will undergo an MRI exam this morning.
Unfortunately, Peterson is no stranger to leg injuries. The legendary runner tore his left ACL in December 2011 only to return and lead the NFL in rushing the following season.
For as long as Peterson is out of commission, look for the combination of Matt Asiata and Jerick McKinnon to carry the load. The Vikings don't have another runner on the roster outside of fullback Zach Line. The injury puts plenty of pressure on quarterback Sam Bradford to make the most of star receiver Stefon Diggs and Minnesota's air attack.