His other progeny include Cape Blanco, Frankel, Golden Lilac, Nathaniel, New Approach, Rip Van Winkle and Ruler of the World.

[2] Gleneagles' dam You'resothrilling, a daughter of Storm Cat was a sister of the leading racehorse and stallion Giant's Causeway.

Ridden by Colm O'Donoghue he raced behind the leaders and made little progress in the closing stages, finishing fourth of the ten runners three lengths behind the Ger Lyons-trained winner Convergence.

Starting favourite against ten opponents, he tracked the leaders before taking the lead approaching the final furlong and winning "comfortably" by two and a half lengths from Stevie's Wonder.

[5] On 24 July, over seven furlongs at Leopardown, Gleneagles met Convergence again in the Group Three Tyros Stakes, with the only other runner being the Dermot Weld-trained Tombelaine.

O'Brien positioned the colt in third place before taking the lead a furlong out and winning by three-quarters of a length and a head from Tombelaine and Convergence.

[7] On 14 September, Gleneagles was moved up to Group One class for Ireland's most prestigious two-year-old race, the National Stakes over seven furlongs at the Curragh.

"[8] For his final appearance of the season, the colt was sent to France to contest the Prix Jean-Luc Lagardère at Longchamp Racecourse on 5 October.

Gleneagles raced at the rear of the field before making progress in the straight and accelerating to take the lead 200 metres from the finish and winning by half a length and a short neck from Full Mast and Territories.

[9] Gleneagles had been well-fancied for the 2000 Guineas throughout the winter, but heavy support in the betting market during March 2015 saw him elevated to clear favouritism for the classic.

[10] On 2 May Gleneagles, ridden by Ryan Moore, started favourite for the 207th running of the 2000 Guineas over the Rowley Mile course at Newmarket.

[14] O'Brien made it clear that he regarded Gleneagles as primarily a miler, but he was left among the entries for the Epsom Derby before being withdrawn five days before the race.

[15] Gleneagles was scheduled to face the French champion Solow in the Sussex Stakes in July, but was withdrawn from the race owing to the soft ground.

[16] The horse shipped to the United States to compete for the first time on a dirt track, and drew the number 5 post with morning line odds of 20/1 for the Breeders' Cup Classic.