As well as beating Alan Shearer's record for calendar year goals in the Premier League, the hat-trick Harry Kane scored against Southampton edged the Tottenham Hotspur striker ahead of the PL legend for another landmark.
The treble was Kane's sixth of 2017 in the Premier League, the most a player has managed in a calendar year.
Shearer had managed five in 1995, the same year he scored the 36 goals that was beaten by Kane with his Boxing Day treble.
It took Kane's total of hat-tricks in the Premier League to eight, moving him to joint-third in the all-time rankings.
Indeed only five players have scored more Premier League hat-tricks in their career than Kane has managed in this calendar year alone.
Most PL hat-tricks
It was also the first hat-trick scored on Boxing Day in the competition for five years.
Kane became only the sixth player to score a Premier League treble on 26 December.
Boxing Day hat-tricks
|2012/13||Gareth Bale||Spurs||Aston Villa|
|2011/12||Dimitar Berbatov||Man Utd||Wigan|