Arsenal and Manchester United's rivalry is one very much founded in the modern ages and is exclusively based around the relative successes of the teams as they battled for the Premier League title around the turn of the millennium. Arsene Wenger's arrival at Arsenal in 1996 transformed the Gunners into genuine contenders to United's dominance and their clashes took on renewed vigour because it was abundantly clear that both sets of players just didn't like one another. This was personified by Patrick Vieira and Roy Keane's regular spats and in successive seasons there were incidents in the tunnel before and after matches, including the infamous 'Pizzagate' where a buffet table was overturned. This hatred is borne simply from the threat each posed to the other's supremacy.