Crowd trouble mars West Ham's victory over Chelsea

Cheikhou Kouyate and Edimilson Fernandes scored either side of half-time to secure victory for the Hammers against a weakened Chelsea side.

A brilliant header from Kouyate handed West Ham the lead, with the Senegalese midfielder leaping above the returning John Terry to head in from 15 yards out.

Three minutes after the break, Asmir Begovic denied Dimitri Payet with a terrific stop, but the ball fell to Fernandes who checked inside before striking across goal.

Both Eden Hazard and Diego Costa came on as second-half substitutes as Chelsea looked to reduce the deficit, but they could only manage a late consolation through Gary Cahill.

Skirmishes broke out towards the end as police and stewards battled to maintain segregation behind the goal being defended by West Ham.

This derby was billed as the biggest footballing test for the London Stadium so far, on a night when basketball and track cycling competitions were also taking place on the former Olympic Park.

The capacity is capped at 57,000 and 45,957 were in attendance, along with a heavy police presence. Chelsea sold out their allocation of 5,182 tickets and, with the Hammers 2-0 up, trouble broke out.