As a two-year-old in 2014 he showed promising but unremarkable form, easily winning a maiden race on his third appearance but being beaten when tried in higher class in two subsequent starts.

Storm Song was a descendant of the American broodmare Friar's Carse who is the female-line ancestor of many major winners including Rachel Alexandra, Sword Dancer and Hail To All.

Joseph O'Brien took the ride in a seven furlong maiden at Naas Racecourse eleven days later when the colt finished second of the fifteen runners, beaten three quarters of a length by Bolger's Parish Boy.

[6] After an eight-week break Order of St George was sent to England and moved up in class for the Group Three Autumn Stakes at Newmarket Racecourse on 11 October.

He sweated up before the race (as he had before his maiden win) and after taking the lead two furlongs out he was caught in the final strides and beaten half a length by Parish Boy.

[7] Order of St George made his three-year-old debut on 28 June in the Group Three Curragh Cup over one mile and six furlongs in which he was matched against older horses.

Starting the 4/1 second favourite behind Forgotten Rules (winner of the British Champions Long Distance Cup) he moved up to dispute the lead in the straight, but got the worse of a sustained struggle with Bondi Beach and was beaten a short head.

[8] In July he was dropped in class for Her Majesty's Plate over one mile and five furlong at Down Royal and led from soon after the start to win "comfortably" by five and a half lengths from the six-year-old gelding Chapter Seven.

[9] On 24 August Order of St George, ridden by Heffernan, was matched against four older horses in the Irish St. Leger Trial at the Curragh and was made the 4/6 favourite.

[13] After his win at the Curragh Order of St George was expected to be sent to contest the Melbourne Cup after a share in the horse was sold to the Australian businessman Lloyd Williams.

[14] As a four-year-old Order of St George was aimed at the Ascot Gold Cup and made his first appearance of 2016 in the Listed Saval Beg Stakes over one mile and six furlongs at Leopardstown on 3 June.

At Royal Ascot on 16 June Order Of St George under Ryan Moore started odds-on favourite in a seventeen-runner field for the Gold Cup over two and a half miles.

[16] On 20 August Order of St George was ridden by his trainer's son Donnacha O'Brien when he started 2/11 favourite for the Irish St. Leger Trial.

After racing in sixth he stayed on strongly in the straight without looking likely to win and finished fourth behind Sheikhzayedroad, Quest For More and Simple Verse, beaten one and a half lengths by the winner.

He returned to winning form at leopardstown in May when he repeated his 2016 success in the Saval Beg Stakes, taking the event "comfortably" by two and a quarter lengths from Twilight Payment.

[20] The horse finished the season with a seventh Group race victory, in the British Champions Long Distance Cup, heading Torcedor late on.