Spurs took the lead 36 minutes into the game, thanks to Dele Alli, having created plenty up to that point and finally gets his assist as he played Son into the box.
The South Korean danced down the left and works a yard, but it was an awful goalkeeping from Roberto, who really should save it.
2 minutes to end of first half, Spurs doubled their lead as Son sprints away down the left before firing a low ball across the box that Lucas gets to ahead of Cresswell at the back post to turn in.
Just 4 minutes into second half, Harry Kane gets in on the act, heading in Spurs’ third from Serge Aurier’s pinpoint cross.
West Ham pulled one back 73 minutes on through Antonio after a blocked effort was recycled by Noble on the edge of the box and he feeds Antonio, who fenits cleverly to deceive Alderweireld before lashing a ferocious effort across Gazzaniga and into the bottom-left corner to make the scoreline 3-1.
90′ + 6′ Angelo Obinze Ogbonna scores to pull another one back for the home side but wasn’t enough to savage a point for West Ham.
Mourinho will be smiling as he runs away with an away victory and all 3 points.