Background
He rode his first winner on Johann Zoffany, trained by his father, at Leopardstown Racecourse on 28 May 2009 and gained his first classic success when Roderic O'Connor won the 2011 Irish 2,000 Guineas.
He rode his first winner on Johann Zoffany, trained by his father, at Leopardstown Racecourse on 28 May 2009 and gained his first classic success when Roderic O'Connor won the 2011 Irish 2,000 Guineas.
He was Irish Champion Jockey in 2012 with 87 winners. He finished the 2013 season with 126 winners and retained his Irish Champion Jockey title. In March 2016 O'Brien announced that he would be stepping down from race-riding to concentrate on his new career as a trainer.
Ireland Irish 2,000 Guineas – (3) – Roderic O'Connor (2011), Power (2012), Magician (2013) Moyglare Stud Stakes – (1) – Maybe (2011) Tattersalls Gold Cup – (1) – So You Think (2012) Irish Derby - (2) - Camelot (2012), Australia (2014) Irish St. Leger - (1) - Order Of St George (2015) Vincent O'Brien National Stakes - (2) - Gleneagles (2014), Air Force Blue (2015) Phoenix Stakes - (2) - Dick Whittington (2014), Air Force Blue (2015) France Grand Prix de Paris - (1) - Imperial Monarch (2012) Great Britain 2,000 Guineas – (1) – Camelot (2012) Ascot Gold Cup - (1) - Leading Light (2014) Coronation Cup – (2) – St Nicholas Abbey (2012,2013) Derby Stakes – (2) – Camelot (2012), Australia (2014) Fillies' Mile - (1) - Together Forever (2014) International Stakes - (2) - Declaration of War (2013), Australia (2014) Prince of Wales's Stakes - (1) - So You Think (2012) Queen Anne Stakes - (1) - Declaration of War (2013) Queen Elizabeth II Stakes - (1) - Excelebration (2012) Racing Post Trophy – (2) – Camelot (2011), Kingsbarns (2012) St. Leger - (1) - Leading Light (2013) United Arab Emirates Dubai Sheema Classic - (1) - St Nicholas Abbey (2013) United States Breeders' Cup Turf – (1) – St Nicholas Abbey (2011).
