West Ham co-chairman David Sullivan has turned up the heat on manager Slaven Bilic after defeat at Bournemouth.
Sullivan wrote for whufc.com: "Slaven, the players and the staff all know we have to do better.
"Bournemouth had been on a difficult run of results and hadn't won a game this year, but they were at home and their crowd were right behind them. You could see from the kick-off that they really wanted that game and it showed on the pitch throughout the 90 minutes.
"I am sure that Slaven, his backroom staff and the team were not happy with what happened and they will think about it a lot over the next few days.
"We have a week to prepare for our next game at home to Leicester City and I really urge you to give everything you can to support the team at London Stadium, as it is a massive game for us."