Manchester United's rivalry with Arsenal has tamed in recent years. But there was a time when the fixture was one of the most physical in the English game, and in 2005 tempers flared before the players were even on the pitch.
Patrick Vieira and Roy Keane had to be pulled apart in the Highbury tunnel after an argument broke out, with referee Graham Poll among those calming the feuding captains.
The Premier League clash that followed proved to be a feisty affair with six bookings and a red card being dished out over the course of the 90 minutes.
Manchester United eventually came away with all three points from a 4-2 win, with Keane putting in a man of the match performance for United.
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