Fergie refuses to relax as United close in on title

WIGAN, England: Sir Alex Ferguson has warned Manchester United they'll need to be on top form in their potential title-clincher against Arsenal on Saturday after watching his side come from behind to beat Wigan.

United now require just one point to be guaranteed their third consecutive Premier League crown and have two remaining fixtures in which to gain it, against Arsene Wenger's men at Old Trafford or against Hull City on May 24, the final day of the season.

All the expectations are that the title party will start on Saturday, but the United manager insists his side will have to keep their focus against the Londoners if they are to claim their 18th overall league championship.