Manuel Pellegrini was confident West Ham could do his Manchester City side a Champions League favour - but says they must now take advantage.
West Ham's victory over Manchester United on Tuesday put City back in control of their battle to finish in the Barclays Premier League top four.
City now go into their final game at Swansea with a two-point advantage.
"This Premier League is not easy," said Pellegrini. "Maybe all of you were thinking we were out but you must win all your games in every stadium and every game is very difficult.
"After the game on Sunday I was very disappointed, especially not to get the three points here with our fans, but I was sure United had a difficult task to do.
"I just was talking with the players, (saying) that we are not ready, (because of) the same atmosphere that everybody thought we were eliminated from the first four positions - but now it is in the other sense.
"I was not surprised, I was sure West Ham was a really tough game for United."