The last time Swansea won a Premier League game 4-1, it was also against West Ham, and Andre Ayew excelled for Swansea on that occasion, too.
It was also the game that persuaded West Ham to part with £20m to sign the Ghanaian forward in the summer of 2016.
The boardroom may shudder at that decision but Ayew is now back at Swansea and back to tormenting West Ham as an opponent. In tandem with his younger brother, Jordan, this was a devilish, high-energy display to which West Ham had no answer.
Andre won the penalty for Swansea’s fourth and Jordan converted.