After making the podium on three other occasions at the Summer Fort Classic, Mannix broke through with an impressive win.
Show Jumping
The Frenchman topped the field of 35 at the Hubside Jumping de Valence in front of grandstands full of enthusiastic crowds.
Competition continues at the Summer Fort Classic CSI3* with Irish rider Robert Blanchette placing one-two in the $25,000 Hunter Derby.
As the border gradually reopens to non-citizens, it sees the welcome return of international competition to Thunderbird Show Park.
With a new mobile app, Ride iQ members will have access to a library of 100+ on-demand audio lessons taught by world-class coaches.
The US team member claimed first, third, fourth and fifth places in the $5,000 Horseware Ireland Welcome Stake at TIEC.
The German edged Swedish rider Peder Fredricson who has been riding the Olympic momentum, placing second aboard H&M Christian K.
Canadian jumpers grabbed some silver and bronze medals to bring home from the hard-fought competition in Traverse City, MI.
Fresh off his Olympic gold and silver medals, the Swedish rider narrowly beat British superstar John Whitaker for top spot.
Highlights from the Summer Series include Sybil Moylan (daughter of Canadian rider Gavin) and Churchill being named Leadline champions.