When Choisir ventured into the unknown that was the Royal Ascot Carnival in 2003, he instigated a movement that would see other Australian horses not only regularly race on the hallowed turf during the five-day UK showpiece but also enjoy an incredible amount of success.  With the 2025 Carnival underway and one of Australia’s best jockeys Mark Zahra riding a winner on the opening day, we’ve taken a trip down memory lane and reminisced about some of the finest Royal Ascot performances by our Australian superstars.  2003 – Choisir  When recalling memorable Royal Ascot moments, naturally the first that comes to mind…