The Facts: Mattison was seen limping after team drills late in Tuesday’s practice session and went for further evaluation.

Diehards Line: Mattison is set to be the No. 1 running back for the Vikings this season, so any sign of injury is going to be something to monitor this summer. The good news? He said, via the Minneapolis Star-Tribune, he “should be OK” while making his way off the field and there’s been no further word on his status. ... We'll be watching for more.