OWINGS MILLS, Md. — The Baltimore Ravens placed cornerback Chris McAlister and strong safety Dawan Landry on injured reserve, ending their seasons.

McAlister underwent surgery Monday to repair his posterior cruciate ligament and cartilage damage on his right knee in Coral Gables, Fla. McAlister, who leads the Ravens with three interceptions, has had problems with the knee dating to last season.

Landry is still experiencing tingling sensations in his neck after sustaining a spinal cord concussion against the Cleveland Browns in the third game of the season.

Landry was carted off the field after a collision with Browns running back Jamal Lewis, where Lewis' knee struck the crown of Landry's helmet.

The Ravens have put 16 players on IR this season, the highest total in the AFC North.