Minnesota Vikings injuries: A.J. Jefferson questionable vs. St. Louis with concussion

Minnesota Vikings cornerback A.J. Jefferson suffered a concussion in a win over the Chicago Bears on Sunday, leaving his status in doubt for Week 15's contest against the St. Louis Rams.

Jefferson suffered the injury when tackling Bears running back Matt Forte in the fourth quarter. Before leaving the game, the cornerback racked up four tackles, with three of those being solo tackles. On the season, Jefferson has 22 total tackles (19 solo) and four passes defended.

Jefferson still must pass NFL-mandated concussions tests in order to play against St. Louis. If Jefferson is unable to play, Marcus Sherels will likely be his replacement. Brandon Burton could also see extra reps in practice this week.

Aside from Jefferson, Minnesota remained mostly injury-free against Chicago. Left guard Charles Johnson suffered a minor ankle injury in the second quarter, but head coach Leslie Frazier said after the game that Johnson likely would not miss any time.