West Ham boss David Moyes, speaking to BBC Sport:
On VAR decision: "At that moment I thought everything was going against us. The first goal is vital and when you lose it you think here we go again but great credit to the players, they kept at it and I thought we got the reward. The equaliser was deserved."
On the winning goal: "We had to counter because they had pinned us right back. We were always waiting for a moment or a chance. We hoped luck would change for us, we felt it had not been with us in some games, we worked harder and deserved that luck.
"We need him (Antonio) so much. He led the line really well. You have to win a game people have not been expecting. I think it was a shock after we saw the performance of Chelsea at Manchester City. Chelsea played a lot of good football. We've done well but our football has to get better."
Chelsea boss Frank Lampard, speaking to BBC Sport:
"We dominated the game in terms of possession, but make mistakes and teams will hurt you. I'm not happy with any of the goals. You don't get given victories for scoring two goals, you have to be better than that.
"There were moments they counter-attacked, which we knew they would. There were details in the game which we knew but we lost because we didn't get them right. Against West Ham you have to make recovery runs. That is the bit we got wrong.
"It is why we are fighting for top four not one or two, because we don't get things right as much as the big boys do. I am not happy but at the same time we are two points ahead of Manchester United, who have been going great for some time.
"If you don't get details right in big games, you're going to drop points. At times we have played really well this season. As a group we need to find more consistency."