The Irishman aboard Ariso bested a 10-horse jumpoff; Vanessa Mannix and Kingston are the top Canadians in 8th place.

American Tanner Korotkin captures the 1.40m CSI5*; Canadian Maddy Riddle wins the 1.40m CSI2* in Langley, BC.

"I try to protect him now and just really aim for the classes that matter," said Tiffany of the 15-year-old gelding winning the final grand prix of the season at Tbird.

The Canadian rider steps up from a win in the U25 last week to record her first senior FEI victory in the $36,900 CSI2* 1.45m class.

Vanessa Mannix (CAN) finished second with Balzane du Mazes, while Brennan's fiancée Lauren Crooks (USA) finished third.

A previous series winner, she reclaimed the title with Havana, a horse she has developed herself since the mare was four years old.

The pair lead wire-to-wire in the $15,000 CSI4*-W 1.45m at Thunderbird Show Park's Harvest Celebration over Justin Prather and EZ Ace.

The prolific winner places one-two in Friday's $75,000 CSI4*-W during the Harvest Celebration; his student Vanessa Mannix (CAN) claims 3rd.

The Harvest Celebration CSI4*-W at Thunderbird Show Park in Langley, BC, is underway and will feature the $150,000 World Cup™ Vancouver.

The event, which takes place Sept. 26 during the Harvest Celebration, will kick off the 2021–2022 North American League.