The German rider piloted Otello de Guldenboom to the win, his second victory of the week at the Italian venue.
In his Royal Horse Show debut, the France-based rider piloted the Rein family's Atomica des Sequoias Z and will join the international riders.
Opening night of the Royal Horse Show featured the national championship, with the reigning champion set to repeat.
A number of NFs voted against the changes which allow horses to continue to compete in cases of blood only after a mandatory fitness-to-compete check.
Horses may continue competing despite visible blood as long as they are deemed 'fit to compete' after the fact.
CHI Geneva in Switzerland will be the venue for this prestigious final, which features an outstanding lineup of international riders.
The LON season will feature qualifiers in Abu Dhabi, Ocala, Rotterdam and St. Tropez, with a final in Barcelona; Canada sits 13th on the list.
The podium battle went down to the wire in Riyahd, with the Belgian rider piloting the great stallion Ermitage Kalone.
The German rider took home the lion's share of the €106.500 purse riding Gangster Montdésir in the field of 40 over Grégory Bodo's course.
Led by Olivier Perreau riding GL Events Dorai d'Aiguilly, the trio delighted French fans on home ground in the second leg of the series.