West Ham fans left Tottenham Hotspur Stadium with chants of "It's happening again" after a 2-1 win.
The Hammers visited Tottenham Hotspur Stadium six points and four places off their rivals.
Lukasz Fabianski started between the sticks with Alphonse Areola suffering a wrist injury. Kurt Zouma returned to the defence after missing the Crystal Palace game due to a burglary while he and his family were at home on Saturday.
Michail Antonio remains absent after suffering a medial knee ligament injury on international duty with Jamaica.
Spurs dominated the first half almost entirely, with around 75% possession, and took the lead through a header by the returning Cristian Romero.
But West Ham kept the score down and five minutes into the second half pinballing deflections landed the ball at Jarrod Bowen's feet and he finished tidily.
In the 74th minute, a lapse of concentration from Destiny Udogie had Vicario scrambling to close down Bowen. The ball fell to James Ward-Prowse, who stroked it against the post, but put away the kind rebound.
Spurs kept up the pressure but seemed to run out of ideas and lose faith, while West Ham grew in confidence to take home the points.
9. Lukasz Fabianski (6)
Fabianski couldn't do anything about the goal, but in the second half was alert when Porro struck from inside the penalty box. (Photo by Shaun Botterill/Getty Images) | Getty Images Photo: Shaun Botterill/Getty Images
10. Kurt Zouma (6)
A well timed interception of a Brennan Johnson cross by Zouma at the end of the first half kept things at 1-0. He can still be a commanding presence. (Photo by Ben Stansall / AFP via Getty Images) | AFP via Getty Images Photo: Ben Stansall / AFP via Getty Images
11. Emerson Palmieri (5)
In the first half Emerson had a torrid time trying to keep track of Dejan Kulusevski, who has returned to his best for Spurs in recent games, but the full-back grew into the game. (Photo by Shaun Botterill/Getty Images) | Getty Images
12. Pablo Fornals (sub)
Pablo Fornals. (Photo by Srdjan Stevanovic/Getty Images) | Getty Images Photo: Srdjan Stevanovic/Getty Images