Following the violence that marred a recent gaelic football match in Portlaoise we take a look back at some high-profile punch-ups from the past.
Francis Lee v Norman Hunter
English Division 1, Baseball Ground, Derby, November 1975
Hunter's hard man reputation did not put off the smaller, but equally aggressive Francis Lee when they clashed during a First Division match between Derby and Leeds.
After exchanging blows on the pitch, the ex-England internationals were both sent off. But, with Lee feeling that he still had a score to settle, the pair traded punches all the way up the tunnel, relenting briefly only when they were joined by both sets of players.
The game featured on BBC's Match of the Day.