Hamilton opened up a 30-point lead over Sebastian Vettel at the top of the standings with his victory at Monza, but only after the title rivals had collided on a hectic first lap.
Vettel spun off and sustained damage to the front wing of his car in the accident, but race officials apportioned no blame to either driver.
That left Hamilton in a straight fight for the lead with Vettel’s team-mate Kimi Raikkonen and he eventually passed the Ferrari nine laps from home, with the German coming in fourth.
It was a hugely significant result for the reigning world champion, who has been struggling to match Vettel’s pace, at least in qualifying.
With seven races of the season remaining there are 175 points still to fight for, with the Singapore Grand Prix next on the schedule in a fortnight’s time.
It’s a track where Vettel has won four times, although Hamilton recorded a second successive win for Mercedes last year following Nico Rosberg’s victory in 2016.
|*All odds quoted are subject to change|