Slaven Bilic left frustrated by mistakes in West Ham's 2-1 defeat to Chelsea

West Ham manager Slaven Bilic was left frustrated by the costly mistakes which saw his side concede "cheap" goals as Chelsea to claimed a 2-1 victory at the London Stadium.

Eden Hazard and Diego Costa were on target for the visitors as they brushed aside the Hammers to take a 10-point lead at the top of the Premier League.

Manuel Lanzini struck a consolation in injury time to set up an anxious conclusion but Chelsea held on, and Bilic thought Antonio Conte's side were full value for their victory.

"They are where they are for a reason but we expected something from this game," Bilic told Sky Sports.

"We started well in the first half, and then to make such a mistake that led to their goal when we had our centre backs and everybody in their box," said the Croatian. "We should have put the ball back into their box. We didn't and they scored from a counter-attack.

"And then their second goal, from our side was a cheap one.

"The story is very simple. If you want to beat Chelsea, they have to make the mistakes for you to score goals and not the other way round. [Otherwise] you have very little chance."

Bilic was full of praise for Chelsea, saying Conte's side were a scary side to face because of the pace they have when they counter-attack.

"We scored a goal which was good, and we could have scored more, but in the second-half every attack they had with their pace and quality looked very dangerous," Bilic said.

Speaking about Chelsea's second goal, he added: "It's a set piece for us and we have enough players at the back and then we get the second ball in a good position to put the ball in but we didn't.

"We lost the ball in a space where you can't afford to, especially against them because their pace in the transition is scary."