West Ham boss David Moyes insists they're capable of upsetting Manchester City on Sunday.

The Hammers defeated Chelsea at London Stadium in Moyes' first spell as manager – and they have beaten the Blues and Manchester United this term – so he knows they have the capability to get results against the teams at the top end of the Premier League table.

The boss is determined to pick up another result of that type, but is equally aware that his team need to add a steely edge to their game.

“We have to win [one of these games]," he added. “West Ham have got that in their DNA, I think it's in the club's DNA and I hope we can show that somewhere along the line.

“What we have to take out of our DNA is not winning when we're in front. That's what needs to change.

“It can only happen with a little bit of persistence, and continuity, that we can get away from that. I need to change the DNA of those up-and-down seasons and up-and-down results.

“There will always be some games in the season where it doesn't go right, but we need to pick up a Chelsea win, or we need to pick up a Liverpool win.

“We need do something along the journey, and if not you know we'll have to win all the games we're expected to win and that's not easy. What comes from that is added pressure."