Manchester City boss Manuel Pellegrini rued his side's misfortune after they were held to a 2-2 draw by West Ham at Upton Park on Saturday.
The Citizens twice had to come from behind to claim a share of the spoils and they were trailing as early as the first minute when Enner Valencia opened the scoring.
Sergio Aguero restored parity from the penalty spot soon afterwards, but City went behind again early in the second-half as Valencia struck for the hosts for a second time.
Aguero would rescue the visitors with his second goal of the game nine minutes from time, but Pellegrini bemoaned missed opportunities after seeing both the Argentine striker and Fabian Delph denied by the woodwork.
"It was not what we wanted before the game. If you analyse the whole game we had two or three clear chances to score. We hit the post and had one clear chance at the end but it was a difficult game," the Chilean said in his post-match press conference.
"Kun played very well. He scored two goals, he made the penalty and he had another shot that hit the post. He's a player that is at 100 per cent now and I'm very pleased with his performance."
Pellegrini added: "Both teams had attacking players. West Ham have very difficult players so you must be very concentrated to try and stop them and with our team the same thing. That makes the game more open.
"We always try to play with creative and attacking players. It was important when we were losing 2-1 to put Kelechi on because he plays very well with Kun and that is what allowed us to score the second goal.
"I'm not very happy with the way we conceded the second goal. Fabian Delph hit the post and then it came in the next play. You need that bit of luck that I feel we didn't have today."