Walker (ankle) has been ruled out for the rest of Sunday's contest at the Rams, Gregg Bell of The Tacoma News Tribune reports.
Walker was examined in the middle of the second quarter and eventually was deemed to have a right ankle injury, which won't allow him to log any more Week 13 action. Prior to his exit, he had three carries for 36 yards and didn't haul in his only target. With Travis Homer (illness) inactive and Rashaad Penny (ankle/fibula) on injured reserve, the Seahawks backfield has been whittled down to DeeJay Dallas and Tony Jones.