Arsenal boss Mikel Arteta savaged his side after conceding two “unacceptable” goals, and admitted that their contest with West Ham will give him “nightmares.”
Arsenal produced a comeback of epic proportions by securing a point at West Ham despite going three goals down.
A woeful three-minute spell saw the Hammers take a two-goal lead before Tomas Soucek added a third.
West Ham remained dangerous on the break, but it was Arsenal who would trouble the scoresheet for the remainder of the game.
Alexandre Lacazette played a starring role, forcing an own goal from Soucek before heading home the equaliser in the 82nd minute.
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Speaking to the BBC after the match, Arteta said: “Hard to explain, we knew the game we would face against West Ham, they can create problems for any team.
“The first goal is something they do really well – the second and third goal, and the chance at the end, is unacceptable. We didn’t look at the races.
“That is the level we can show, the other is top level and probably the best we play all season – we could have scored six or seven goals and won the game, but we cannot have two faces.
“We stuck to the plan we had because we were getting further away from that, we started to play much better and I have faith in the boys they are not going to give the game away. We had the belief we could do something.
“This game is going to give me a few nightmares because it is really difficult to stop some of the things we have been doing to hurt ourselves.”
Lacazette reveals strong Arsenal belief
Arsenal striker Lacazette also spoke to the press, telling Sky Sports: “We had the pressure, we knew it was a big game.
“We have to work a lot to be ready for the end of the season. It is really complicated, this kind of game, we need to work a lot.
“We knew even after the bad first half we could come back and score more.”