While Normandy is the equine capital of France, Mayenne has long been the home of the jockey; two in particular, one of whom is still just 25.
That has likely been another element of what has made Guyon not just Olivier Peslier’s most famous protégé, but also the favourite jockey of Fabre, who is known for being demanding and a perfectionist.
Those are two qualities that Guyon has demonstrated ever since his first Group 1 win in the Grand Prix de Paris on Bastille Day 2009.
Alongside these attributes, he displays a tactical awareness that is already sharp, if his surge over the last 200 yards of Saturday's race is anything to go by.
Although Flintshire was the favourite, this decisive breakaway proved how talented Guyon is, and how far ahead he is of the other Fabre ‘products’ Pierre-Charles Boudot (third) and Flavien Prat (fifth).
This third career win for the three-year-old colt is also the third for Guyon and the 12th for Fabre in this event, which goes back to 1989 - the year when Guyon was born.
This trio could top the list of favourites for the Prix de l’Arc in October, alongside another comprising three horses: Al Kazeem, Orfèvre and Intello. Intello was ridden by Guyon in the French 2,000 Guineas and is now associated with Peslier.