Three goals inside the opening 19 minutes of the second half sent West Ham United to a 3-0 defeat by Tottenham Hotspur at London Stadium.
The Irons started strongly and went close to taking a 14th minute lead when Kyle Walker-Peters led a break down the right. Jarrod Bowen and Mateus Fernandes then combined to set-up Lucas Paquetá, who sold Pedro Porro a dummy but then placed his shot wide.
Tottenham thought they had taken the lead shortly afterwards, but Micky van der Ven was penalised for a push on Walker-Peters before Cristian Romero headed Mohammed Kudus' corner home.
The visitors grew in strength as the half wore on, but the Irons repelled their efforts to ensure they went back to the changing rooms level.
However, the north Londoners were proving dangerous from set-pieces and a corner two minutes after the break paved the way for the game's first goal as Sarr found space at the back post to nod into the net.
Tomáś Souček was then sent-off for a high tackle on Joǎo Palhinha before Lucas Bergvall's header doubled the advantage in a nightmare start to the second period.
With 63 minutes on the clock Bergvall turned provider, running into the box to lay-off to van der Ven for a measured finish.
Click on the image above for a gallery from the matchday.
