Aidan O'Brien's apparent third string War Command turned in a breathtaking display under Seamie Heffernan to take top honours in the Coventry Stakes at Royal Ascot.

The Ballydoyle handler was responsible for 5-2 favourite Stubbs, as well as leading contender Sir John Hawkins (6-1), with War Command a 20-1 shot after making a winning debut at Leopardstown just 11 days earlier.

Stubbs ranged up on the outside in the hands of the trainer's son Joseph a furlong down, with Sir John Hawkins and Ryan Moore also in there pitching, but neither had any answer to War Command's stunning finishing effort.

The American-bred juvenile passed the post six lengths clear of the eyecatching Parbold, who made good ground in the final furlong having encountered traffic problems.

Sir John Hawkins picked up minor money in third, with Stubbs eventually weakening into sixth position.