Raiders receiver Michael Crabtree and Broncos cornerback Aqib Talib have a history. It didn’t take long for that history to come to a head Sunday. Crabtree blocked Talib off the field into the sideline, shoving him to the ground. Talib got up and mayhem ensued with players from both teams joining the scuffle. Fists and helmets flew. Crabtree and Talib somehow escaped the scrum and ended up by themselves in the end zone, exchanging punches. Crabtree, who wasn’t wearing a helmet, connected underneath the facemask of Talib before Broncos defensive linemen Zach Kerr and Domata Peko intervened to restore calm.