New England Patriots running back Stevan Ridley didn't return to Sunday's AFC Championship Game after sustaining a head injury during the fourth quarter of his team's 28-13 loss to the Baltimore Ravens.
Ridley remained down for several minutes before walking off under his own power and heading into the locker room, likely for concussion testing. The Patriots later ruled him out with a head injury.
The Ravens took over and needed just four plays to cover 47 yards for a touchdown that ballooned their lead to 15 points with 10 minutes to play.
»*September 2008:* Pollard, then with the Kansas City Chiefs, crashed into Tom Brady's planted left leg. Brady was lost for the season with a torn anterior cruciate ligament.
»*January 2010:* Pollard, then with the Houston Texans, closed in on Wes Welker, who tore his ACL while trying to cut away from the safety.
»*January 2012:* Pollard, now with the Ravens, dragged down Rob Gronkowski, who sustained a high ankle sprain. Gronkowski was knocked out of the game and limited in a Super Bowl XLVI loss.