The Canadian secured victory in the Spring Festival's feature class for the second consecutive week riding Havana.
The Sunday feature of the April Season Opener at Thunderbird Show Park also saw U25 winner Georgia Knight grab second with Ero Del Pierire.
The Canadian and "Romeo" bested a three-horse jump-off to win their third U25 competition of the week at Thunderbird Show Park.
The 16-year-old made the top six in the final "jump off" phase where she received the highest marks to eke out a victory.
For her stallion Clockwise of Greenhill Z it was business as usual despite a tack malfunction in the CSI3* Grand Prix.
Kyle King and 'Odie' won the Wednesday opener and Jim Ifko topped the leaderboard on Thursday with 'Monty' over Joey Rycroft's courses.
Matt Sampson shines in the CSI3* ATCO Cup Grand Prix; Tiffany Foster continues her winning ways at Thunderbird Show Park.
Fresh from Europe, Sampson takes the Challenge with Curraghgraigue Obos Flight; Chernoff is MarBill Hill U25 champion and Betker bests Derby.
The Canadian racked up three big wins during the Summer Fort Welcome; more than $34,000 raised for Uryadi’s Village in Ethiopia.
Highlights from Thursday's 1.40m Challenge, MarBill Hill U25 and Canadian Hunter Derby at Thunderbird Show Park.