McClain isn't the only key defender nursing a concussion this week.
While McClain has been Dallas' most valuable defensive player for stretches of the season, Mincey leads the team in quarterback hurries and sacks.
Other injuries we're tracking ahead of the Divisional Round of the playoffs:
- Julius Thomas practiced in full again on Thursday, after explaining that the bye week was a big help for his sprained ankle. The Broncos defense could also get a boost with linebacker Brandon Marshall practicing on a limited basis. A Pro Bowl-caliber player this season, Marshall missed the final two games of the regular season with a mid-foot sprain.
- Speedy Carolina wide receiver Philly Brown returned to a limited practice on Thursday, but didn't take contact. If Brown's shoulder doesn't cooperate, the Panthers will likely activate former Jets draft bust Stephen Hill. If you missed the news on Wednesday, Panthers run-stuffer Star Lotulelei will miss the remainder of the playoffs with a fractured foot.
- Along with running back Jonas Gray (ankle), Patriots wide receivers Julian Edelman (concussion) and Brandon LaFell (shoulder, toe) were limited again on Thursday. Nothing is ever certain with a Bill Belichick-coached team, but all three are expected to play versus the Ravens. LaFell confirmed there's no reason to doubt his availability.