London has fallen.

10 man Chelsea stunned at the bridge handing Thomas Tuchel his first defeat on English soil.

The Blues took an early lead from an easy Christian Pulisic tap in from Alonso's free kick. They were dealt a blow after Thiago Silva was handed his second booking from a tackle on Okay Yokuslu.

The baggies in deed capitalized and scored two quick goals in stoppage time through Matheus Pereira.

The baggies were not done with their quick firing as 3 became 4 in 5 minutes during the 63rd and 68th minute.

Half time substitute Mason Mount Drew a consolation goal to make it 2-4 only for Big Sam men to add their 5 in extra time.

The Blues remain in 4th with 51 points with their London rivals,West Ham, on their neck with 49 points but with a game in hand.

The baggies are now 7 points a drift the relegation zone.