Wayne Rooney's first-minute tap-in was enough to beat Wigan, Rooney scored the winner in a 1-0 victory over Wigan Athletic that moved Manchester United to one ups in the Premier League on Wednesday.

Despite the taste of victory, Rooney suffered a hamstring injury which could keep him out for three weeks. It is a hamstring injury. That will be about three weeks. We hope it is no longer, said Alex Ferguson a United boss

Carlos Tevez, who replaced Rooney, and center back Jonny Evans, already, playing in place of the injured Rio Ferdinand, completed the game despite taking heavy knocks during the first half.

Manchester United, who has 44 points and a game in hand, will hit the top if they beat Bolton Wanderers on Saturday as leaders Liverpool, who have 46, do not play until they host Everton in the Merseyside derby on Monday.