A contentious eight-horse jump-off saw Vanessa Mannix (CAN) and Catinka 25 settle for second with Conor Swail (IRL) and Theo 160 third.
MarBill Hill U25 League
In the four-horse jump-off in the 1.50m CSI3* class on Thursday, the Irishman stacked the odds by making up 50 per cent of the lineup.
Thunderbird Show Park in Langley, BC wrapped up five days of show jumping at the West Coast Classic with the $20,000 Maui Jim Grand Prix.