Victoria's Blue Gum Farm had a day to remember at Moonee Valley on Saturday, producing three stakes winners including two homebreds for stud owners Phil and Patti Campbell.

International buyers responded positively to the new, more segmented and graduated format introduced for the four-day Arqana October Yearling Sale.

Cox Plate day history pointed to promising Shamus Award three-year-old Soul Patch producing a fine trial for the Victoria Derby with his dominant win in the G2 Moonee Valley Vase.

French trainer Jean Dubois is becoming a key promoter of the progeny by champion European sire Siyouni in Australia.

Classy I Am Invincible filly Loving Gaby gave international investors Phoenix Thoroughbreds their first Australian Group One victory in the $1 million Manikato Stakes at Moonee Valley on Friday night.