Browns coach Pat Shurmur defended the team's handling of Colt McCoy's head injury in a loss to Pittsburgh after the quarterback's father was sharply critical of the team Friday. McCoy sustained a concussion from a vicious helmet-to-helmet hit from Steelers linebacker James Harrison in the fourth quarter on Thursday. He stayed out for two plays before coming back in and throwing an interception. Shurmur is confident Cleveland's medical staff followed the NFL's strict guidelines on head injuries when they assessed McCoy on the sideline. "I feel very confident that if he wasn't able to play we would have stopped him," Shurmur said. "I can assure everyone that we followed protocol."