The Irish rider guided the speedy mare Chardonnay to victory to claim the early lead in the North American League standings.
Chardonnay
Castle Rock Winery has partnered with US Olympic Dressage rider Sabine Schut-Kery to produce a 'Dressage' line of wines.
A contentious eight-horse jump-off saw Vanessa Mannix (CAN) and Catinka 25 settle for second with Conor Swail (IRL) and Theo 160 third.