West Ham boss Manuel Pellegrini admitted frustration after their 1-0 defeat to Brighton on Friday night.
Glenn Murray scored his fifth goal of the season to give Brighton victory over West Ham in an entertaining Premier League match at the Amex.
Pellegrini stated afterwards: "I am frustrated because I think we do the things to win the game. We had three clear chances to score and didn't. They had one chance in the first half and then defended. We deserved more.
"The first 35 minutes we were not at the pace needed, especially to fight for the second balls. The team is in progress.
"We didn't play a bad game, we were better than Brighton, but with eight games played we don't have too many points. We must continue improving."