Salah popped up in the right place at the right time as Alex Oxlade-Chamberlain's run through the Hammers defence resulted in a ball that ended up at the feet of the Egypt worldwide, who slid it past the diving Adrian for his 23rd goal of the Premier League season.
The Hammers slipped closer to the drop zone with a defeat at Liverpool on Saturday, an away game where fans were also set to pay tribute to club legend Bobby Moore who died 25 years ago this weekend. Liverpool move up into second for now with Manchester United still to play. Click the right arrow, above, to see a predicted Liverpool XI listed in squad number order... In fact, only against Everton have West Ham lost more top-flight matches (61) than versus Liverpool (60).
Goals from Emre Can, Mohamed Salah, Sadio Mane and Roberto Firmino sealed all three points for the Reds while a consolation goal from substitute Michail Antonio offered false hope for the Hammers.
We did the Liverpool and Sunderland game on the show last season when the home side had to be patient against the Black Cats, managed by Moyes.
Jurgen Klopp's side were two to the good early in the second half, Mohamed Salah's cool finish taking his tally for the season to 31.
Sean Dyche's Clarets were as high as fourth in December, but their European dreams have diminished thanks to a lengthy run without a Premier League victory.
Shortly afterwards Liverpool's grip on the game tightened further when Can won the ball immediately from Adriana's kick up field and lifted it over the top of the West Ham defence for Firmino to chase.
Alongside him was a typically all-action display from James Milner, who finished the game having had the most touches, made the most tackles and interceptions and completed the most passes as well as the most crosses.
Pablo Zabaleta - 5 - The former Manchester City full-back had a decent chance to score in the first-half, firing a volley towards the Liverpool goal but it went just wide. Provided the assist for West Ham's goal.
Declan Rice (for Joao Mario) - 6 - The game was done by the time he entered the field.