West Ham United’s Arthur Masuaku has insisted that his side can cause an upset when they face Chelsea this weekend if they reproduce their performance from earlier in the season.

The Hammers beat the reigning Premier League champions 1-0 back in the reverse fixture in December.

And David Moyes’ will side go into this weekend’s clash full of confidence having swept aside struggling Southampton 3-0 on Saturday.

A Joao Mario goal and Marko Arnautovic brace lifted Moyes’ men further away from the Premier League’s relegation zones, and Masuaku insists his side can pull themselves even closer to safety at Stamford Bridge on Sunday.

“It’s a very difficult game, but we have to go there and play our football, play as a team and be hard to beat and why can’t we win?” said the DR Congo international.

“Everybody expected them to win the first meeting, but we played a very good game and we won, so let’s try to do the same again on Sunday.”

Masuaku returned to action at the weekend after a six week spell on the sideline following his ban for an incident in the FA Cup clash with Wigan in January.

And the former Olympiacos man says he is delighted to back on the field after a difficult time on the sidelines.

“It was a good feeling to be back on the pitch and I felt good during the game, except for maybe the last 20 minutes when I started to have cramps,” he revealed. “It was a great feeling to be back and play at home in front of the fans. They were behind us from the first minute until the end and it felt good to be back in the team.

“From the very first minute we were on the front foot and got at them. I think we played better than them, especially in the first half, and we won in the end and got the three points, which was the most important thing of all.”