So You Think was purchased for $NZ110,000 at the 2008 New Zealand Bloodstock Premier Yearling Sale on behalf of Malaysian billionaire Dato Tan Chin Nam and Tunku Ahmad Yahaya and was trained by Bart Cummings.

He was sired by the Irish-bred Epsom Derby winner High Chaparral out of Triassic, a New Zealand-bred daughter of the American stallion Tights.

There was some debate on whether the horse had achieved enough to warrant a start in the Cox Plate, but the Moonee Valley Racing Club decided that he was up to the challenge.

The horse resumed racing as a four-year-old in August 2010 with a win in the Memsie Stakes, beating several of Australia's top gallopers and making him the early favourite for the 2010 Cox Plate.

He bounced back on his next outing, in the Eclipse Stakes at Sandown, winning by a half length from 2010 Derby and Arc winner Workforce.

[13] Following an eight-week spell, So You Think resumed racing again in the Irish Champion Stakes, where he gained a half-length victory over multiple Group One winner Snow Fairy.

Following a spell of five months, during which he became a six-year-old by Northern Hemisphere reckoning he returned to racing in the Dubai World Cup, where he came fourth in his first run on Tapeta.

Starting 4/5 favourite against ten opponents, he took the lead two furlongs from the finish and won by two and a quarter lengths from the Queen's colt Carlton House.

c = colt, f = filly, g = gelding So You Think was rated equal Champion Intermediate (Middle Distance) Turf Performer in the 2010 World Thoroughbred Rankings along with Rip Van Winkle and Cape Blanco, by the International Federation of Horse Authorities.