[1] David Junior was bred by Arthur Appleton at the Bridlewood Stud Farm near Ocala, Florida, sired by the Eclipse Award winning stallion Pleasant Tap.
[2] This pedigree suggested a bright future on American tracks, but at the Fasig-Tipton sale at Calder in spring 2004, he was bought for $175,000 by the bloodstock agent Richard Galpin on behalf of the British publisher David Sullivan.
A move up in trip followed in the listed Fairway Stakes at Newmarket, where David Junior took the lead two furlongs out and pulled clear to win by eight lengths from a field that included the future Group One winner Linngari.
Ridden for the first time by his new regular jockey, Jamie Spencer, he recorded his first Group race win by taking the Select Stakes at Goodwood[7] by a one and a half lengths despite hanging to the right in the closing stages.
He stayed on strongly to win by three quarters of a length from the Cartier Award-winning filly Pride, with major winners such as Rakti, Alexander Goldrun, Alkaased, Oratorio and Maraahel amongst the beaten horses.
[16] He was held in last place by Jamie Spencer, as the race was led by his stable companion, Royal Alchemist, who had been bought a few days earlier to act as a pacemaker.
David Junior's final race was the Breeders' Cup Classic, which ended in disappointment, as he failed to cope with the dirt at Churchill Downs and finished tailed-off behind Invasor.
[23] In the ratings for 2005-6, which excluded most horses trained in North America and Europe, he was placed second, equal with Electrocutionist and Heart's Cry, behind the Australian mare Makybe Diva.