Belgium, Brazil, Canada, France, Great Britain, Germany, Ireland, Italy, Netherlands, Norway, Spain, Sweden, Switzerland, USA and Uzbekistan will compete.
show jumping
A previous series winner, she reclaimed the title with Havana, a horse she has developed herself since the mare was four years old.
The Irishman kicked off the North American League with a convincing victory aboard Vital Chance de la Roque, edging Canada's Vanessa Mannix.
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.
Hayes qualified two horses for the jump-off at Wesley Clover Parks over a track set by Canadian course designer Pierre Burch.
Deslauriers, Asselin, and Coyle take the big classes in the International Ring to close out the September Series.
The German won the Rolex Grand Prix of Aachen on home ground, narrowly edging 20-year-old US rider Brian Moggre.
The Spruce Meadows North American continued on Saturday with wins for Deslauriers and Conor Swail in the International Ring.