Not much has gone right for the royally-bred Prost since capturing the Group III ATC Canonbury Stakes last season. Still, the son of Snitzel turned it around in Saturday’s $1,000,000 Group II Catanach's Jewellers Callander-Presnell (1600m) at Randwick.

El Castello’s sire Castelvecchio won the Group I ATC Champagne Stakes at two and was then second in both the ATC Spring Champion Stakes and Cox Plate before returning in the autumn to win the Group I ATC Rosehill Guineas, so it only seems fitting that his first Group I winner should arrive in a race like the Spring Champion Stakes (2000m).