West Ham captain Declan Rice admits defeat to Brighton wasn't good enough.
Rice has called on teammates to raise their standards.
He told the club's website: “Yeah. As you can see on my face I'm annoyed and disappointed because this is not the level we have set over the last two years.
“We know as a group of players if you lose the first three games you're constantly chasing, and we don't want to do that.
“Look at the start we had last year – we were on fire and it set the tone for the season. It's down to us to pick up and go again.
“In the first half I thought there were glimpses where we could have done better, but we stayed in the game, kept possession of the ball, moved it around but couldn't get that killer touch.
“Obviously you concede a penalty and from there it's an uphill task. It was a poor goal to concede in the second half but, look, we need to get back on it.
“As a group of lads, last year and the year before we were so good because we were honest, we stayed together, we worked our socks off on the pitch and gave everything. I think from the start in these first three games we're feeling a little bit sorry for ourselves. There's no easy game in the Premier League so unless you start to work and get three points on the board you'll be chasing."