Jon Runyan, the league's vice president of football operations, told Burfict that "you must be held accountable for this continuing unacceptable conduct."
NFL rejects Burfict's appeal, upholds 4-game suspension →
"Your actions triggered a melee and endangered various sideline and league personnel, including one of our game officials who was injured trying to maintain control of the situation," Runyan said in his letter to Crabtree. "Finally, during the ensuing altercation, you grabbed and twisted that same opponent's facemask and threw a punch at him. Such actions have no place in this game, engender ill will between teams, and lead to further confrontations."
Raiders lose Michael Crabtree to suspension; Amari Cooper's status unknown →
