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On February 13, 1999, one of the most dramatic and unique matches in the history of the FA Cup took place at Highbury.
Sheffield United were the visitors for a fifth-round tie against Arsene Wenger's side, who were looking to defend the trophy they had won the previous year.
All seemed to be going to plan when Patrick Vieira opened the scoring before half-time, but Marcelo equalised for the Blades just three minutes after the restart.
But the real drama occurred when the visiting goalkeeper Alan Kelly kicked the ball into touch so team-mate Lee Morris could receive treatment.