Baltimore Ravens cornerback Marlon Humphrey is active for Sunday's AFC Championship Game against the Kansas City Chiefs.

Humphrey, who the Ravens listed as questionable due to a calf injury, could be held to a rotational role in the contest, sources told Jeremy Fowler of ESPN. He suffered the ailment in the club's Week 17 victory over the Miami Dolphins, forcing him to miss the divisional round against the Houston Texans.

The 27-year-old also went down with a foot ailment in training camp, which resulted in him missing the first four games of the year, and sustained a calf injury in Week 10 that forced him to miss two contests.

Humphrey is a key player for the league's top-ranked scoring defense. Baltimore has been terrific against the pass this year, allowing only 191 yards through the air per contest.

The Alabama product has 26 tackles with five passes defended and one interception in 10 games this season.