Antonio condemned Norwich to a record fifth relegation from the Premier League by scoring all four goals at Carrow Road in a match the hosts had to win to avoid the drop.
The 30-year-old netted the first hat-trick of his professional career inside 54 minutes, before finishing Ryan Fredericks's cross.
In doing so, he becomes the first West Ham player to score four goals in a Premier League away match.
He has scored six times and assisted once in four matches since the resumption of the 2019/20 season, meaning he has been involved in 78 per cent of West Ham's Premier League goals.
And his contribution has given his side's chances of avoiding the drop a significant boost.
The Hammers lie six points clear of the bottom three, level on points with Watford, but they now boast a superior goal difference of six over the Hornets.
|Ole Gunnar Solskjaer||06/02/99||MUN||NFO|