Sir Dragonet (9 February 2016 – 16 October 2021) was an Irish bred thoroughbred racehorse that won two Group One races in Australia, most notably the 2020 W. S. Cox Plate.
[2] Sir Dragonet won his first two starts in 2019, a maiden race at Tipperary and then the Group III Chester Vase by a margin of eight lengths.
Starting the 11/4 favourite and ridden by Ryan Moore, Sir Dragonet was one of 7 horses in the race trained by Aidan O'Brien.
In a "blanket finish", and after leading the field with two furlongs to travel, he was beaten by just three quarters of a length in 5th position by stable mate Anthony Van Dyck.
Trainer Ciaron Maher spoke of the incident, "We’re heartbroken to announce that Sir Dragonet has broken down during a piece of work at Moonee Valley.