Chris Harris is finished after one playoff game. (Charlie Riedel / AP)

An MRI has confirmed what the Denver Broncos feared: cornerback Chris Harris tore his left anterior cruciate ligament in the Broncos’ AFC divisional playoff game Sunday.

The loss of Harris, who was hurt in the third quarter of the 24-17 victory over San Diego, is a tough one for Denver, who will host the New England Patriots in the AFC championship game Sunday. The Broncos are thin at the position, with Champ Bailey (35) and and Quentin Jammer (34) showing their age. Not at all coincidentally, when Harris left the game, Chargers quarterback Philip Rivers capitalized, leading San Diego back from a 17-0 deficit.

That may not bode well for the Broncos against Tom Brady, who has a well-rested arm after doing little besides handing off to LeGarrette Blount on Saturday.

USA Today’s Lindsay H. Jones first reported the extend of Harris’s injury.