Chelsea are Manchester United's biggest remaining threat in the English Premier League football title race after Arsenal lost 2-1 at Bolton Wanderers.
A late Tamir Cohen header sealed victory for Bolton and all but dashed the Gunners' hopes of a first title since 2005.
With four games to go Arsenal can keep their mathematical chances alive with a win over United next weekend - the Red Devils visit the Emirates on Sunday, while Chelsea play United the following weekend at Old Trafford.
Chelsea have 67 points, six behind United with Arsenal nine points adrift on 64. Chelsea's next game is a home fixture and a London derby against Tottenham.