Norwich and Sunderland play for the Friendship Trophy whenever they meet, a tradition stemming back from the 1985 League Cup final between the sides.

Norwich Evening News: Sunderland manager Sam Allardyce pushed Norwich City players during the fracas at Carrow Road. Picture by Paul Chesterton/Focus Images LtdSunderland manager Sam Allardyce pushed Norwich City players during the fracas at Carrow Road. Picture by Paul Chesterton/Focus Images Ltd (Image: ©Focus Images Limitedwww.focus-images.co.uk+447814 482222)

But there was nothing remotely amicable about Norwich's 3-0 loss to Sunderland on Saturday, with tempers boiling over virtually straight from the kick-off after Robbie Brady's challenge sent DeAndre Yedlin head first into the advertising hoardings.

Players and staff from both sides squared up in front of the dug-out with Allardyce in the thick of it, shoving Norwich's Jonny Howson and Cameron Jerome in ugly scenes which could land both clubs an FA charge.

'I got a bit carried away, but the Norwich players were encroaching my box - I was always going to protect my players and my mob,' added Allardyce, who also insisted he saw nothing untoward after the game amid rumours of a tunnel bust-up.

Norwich Evening News: The incident could land both clubs with a charge from the FA. Picture by Paul Chesterton/Focus Images LtdThe incident could land both clubs with a charge from the FA. Picture by Paul Chesterton/Focus Images Ltd (Image: ©Focus Images Limitedwww.focus-images.co.uk+447814 482222)

Norwich Evening News: Players and the benches from both sides involved in the touch line melee. Photo: Paul Chesterton/Focus Images LtdPlayers and the benches from both sides involved in the touch line melee. Photo: Paul Chesterton/Focus Images Ltd (Image: ©Focus Images Limitedwww.focus-images.co.uk+447814 482222)