How many forwards have scored try hat tricks in an International Championship match?
Flanker CJ Stander's trio for Ireland against Italy in Rome was the first hat trick of tries scored by a forward since the Six Nations version of the International Championship began in 2000.
The Championship itself dates from the 1880s when the four Home Unions first played each other in a round-robin of matches.
France joined in to make it a Five Nations tournament from 1910 until 1931 and resumed -- after expulsion during the 1930s -- in 1947 when international rugby finally got under way following World War II.
Only two forwards had try hat tricks to their names in International Championship games before Stander's feat at the weekend.
The Welsh forward Jehoida Hodges crossed three times against England at Swansea in 1903.
That was back in the days before substitutes were permitted, so it should be added that Hodges had been posted from the pack to the wing position after his captain, Tom Pearson, had been forced off through injury.
The only other Championship try hat trick by a forward was also scored by a flanker.
In February 1962 the Frenchman, Michel Crauste, went over three times at Stade Colombes in a 13-0 win against England.