Three players were ejected from the Oakland Raiders' game at the Cincinnati Bengals on Sunday following a mass brawl.
The Bengals' Andrew Whitworth, and Lamarr Houston and Tommy Kelly of the Raiders were the players involved.
Whitworth lashed out after Houston threw Bengals quarterback Andy Dalton to the ground.
Raiders coach Dennis Allen told the Associated Press: "I think it's OK to play with anger but we've got to play with poise and composure. We lost our poise a little bit."
Whitmarsh added: "They were probably looking for a fight because they weren't doing much on the field."
The initial confrontation led to players on the field, sidelines, assistants and coaches all clashing.
Bengals won the game 34-10.