Chelsea have lost ground in the race for UEFA Champions League qualification in the English Premier League after falling to a shock 1-0 defeat to West Ham United at Stamford Bridge this afternoon.

The Blues had plenty of the ball but were not their usual ruthless selves in attack as they were defeated by an out of form West Ham United outfit.

Chelsea started the match strongly with Mason Mount testing visiting keeper David Martin from distance before Pedro also registered an effort on target which lacked the required accuracy to cause any severe danger to the visitors goal.

Michail Antonio and Kurt Zouma both headed efforts straight at the respective goalkeepers before Mateo Kovacic and Olivier Giroud failed to find a way beyond West Ham United debutant Martin.

The deadlock was broken three minutes into the second half when Aaron Cresswell drilled his shot into the corner of the net to send the visitors into a shock lead.

That goal really seemed to knock the stuffing out of Chelsea with West Ham United looking like the most likely to score. A Fabian Balbuena header called Blues keeper Kepa Arrizabalaga into action before the  Spaniard superbly denied Antonio from close range.

Antonio soon had the ball in the net but his effort was ruled out for offside by VAR. West Ham United were not punished for that decision though as Chelsea struggled to trouble Martin for the remainder of the match as they slipped to defeat.

Chelsea return to action on Wednesday evening when Aston Villa are the visitors to Stamford Bridge.