The German midfielder got on the end of a Lucas Leiva cross to rocket Jurgen Klopp’s side ahead just before half-time.
Pundits and fans reckon the goal is the best in the Premier League so far this season.
Andy Carroll laid claim to the Goal of the Season prize earlier this season with a belter against Crystal Palace.
Sightings of the towering centre-forward have been all too infrequent for West Ham fans this term but he was present at the back post when Michail Antonio’s cross was sent in his direction.
What was most impressive about Carroll’s finish was the sheer power he produced to leave Palace stopper Wayne Hennessey grasping at air.
Carroll’s goal came in the same month as Olivier Giroud’s scopion kick – also against Palace.
The French striker’s backheeled kick from close range put Arsenal ahead in their New Year’s Day clash in north London.
Alexis Sanchez fired in a cross from the left and Giroud acted quickly to flick the ball towards goal with the back of his boot.