Rio Ferdinand is hoping Wigan can do Manchester United a favour in the title race on Sunday by springing an upset at Stamford Bridge.[LNB] The Premier League title race is set to go down to the wire, with both United and Chelsea still in the running to take the crown.[LNB]The Red Devils know they are relying on a slip-up from their rivals, though, with Chelsea holding a slender one-point advantage heading into the final day.[LNB]Victory over Wigan on home soil would be enough to see them take the prize, while United must overcome Stoke at Old Trafford and hope for the best.[LNB]Ferdinand, who has helped the Red Devils claim three consecutive crowns, accepts that Sir Alex Ferguson's men need a helping hand but insists it is not beyond the realms of possibility for the Latics to get a positive result in the capital.[LNB]The 2009/10 campaign has been one of many twists and turns and United know that another upset this weekend could see them cross the finishing line in first place.[LNB]"It's been an exciting season," Ferdinand said in The Sun.[LNB]"More so-called lesser teams on paper have been taking points off the top four.[LNB]"In previous seasons it's been a case of the big teams beating all the others and then dropping points against each other.[LNB]"It's been a weird season. Hopefully that will bode well for Chelsea's game."