To put that into context, Harry Kane, scorer of two of Spurs' five, said it was Son who had "stole the show".
Jose Mourinho even nicknamed him "Sonaldo", though the Spurs faithful have long sung that name in reference to their South Korean speedster.
Liverpool's hopes of a first top-flight title since 1990 were given another boost with the Reds beating Bournemouth with champions Manchester City losing more ground after a derby defeat to United.
David de Gea pulled off a stunning save to deny City winger Riyad Mahrez a late equaliser, while no one else this season has kept Raheem Sterling contained as well as United right-back Aaron Wan-Bissaka did at the Etihad Stadium.
Winger Daniel James completes the United trio after the Welsh winger tormented the City defence with his raw pace.
Leicester City cut Liverpool's lead back down to eight points, with midfielder James Maddison setting up two goals in a 4-1 win over Aston Villa.
Above is a selection of the players who comprise Richard Jolly's best XI players from this weekend's matches. To move on to the next photo, click on the arrows, or if using a mobile device simply swipe.