Joseph Patrick O’Brien
Born in County Tipperary on May 23, 1993, Joseph Patrick O’Brien is the eldest son of perennial Irish Champion Flat Trainer Aidan O’Brien. Before taking out a training licence on June 3, 2016, he was a two-time Irish champion jockey, in 2012 and 2013, on the latter occasion with a record 126 winners. On the opposite side of the Irish Sea, he won the 2,000 Guineas and the Derby on Camelot, trained by his father, in 2012 and the Derby, again, on Australia, also trained by O’Brien Snr., in 2014.
Based at Owning Hill, near Piltown, County Kilkenny, Joseph O’Brien made a flying start to his training career, saddling his first winner, Justice Frederick, ridden by his younger brother Donnacha, in a seven-furlong maiden at Gowran Park on June 6, 2016, just three days after obtaining his training licence. He also wasted little time in chalking up his first Group 1 winner, Intricately, again ridden by Donnacha O’Brien, in the Moyglare Stud Stakes at the Curragh on September 11, 2016.
O’Brien has since added another 44 Group 1 and Grade 1 victories to his career tally. On the Flat, highlights include winning the Melbourne Cup twice, with Rekindling in 2017 and Twilight Payment in 2020, the Irish Derby with Latrobe in 2018, the Prince of Wales’s Stakes at Royal Ascot with State Of Rest in 2022 and the Oaks with Thundering On in 2026. Under National Hunt Rules, his winners at the highest level include Banbridge in the King George VI Chase at Kempton in 2024 and Home By The Lee in the Stayers’ Hurdle at the Cheltenham Festival in 2026.
On August 6, 2022, O’Brien reached the landmark of 1,000 career winners as a trainer when Al Riffa won a maiden at the Currgh. He has since saddled the same horse to win three Group 1 races, including the Irish St. Leger, back at the Curragh, in 2025.