At stud, Dubawi has been a highly successful breeding stallion, siring major winners such as Monterosso, Al Kazeem, Makfi, Lucky Nine and Night of Thunder.

Three weeks later he started 10/11 favourite for a novice race (for horses with no more than two previous wins) over one mile on the Polytrack surface at Chelmsford City Racecourse and recorded his first success as he took the lead approaching the final furlong and won "readily" by three and a quarter lengths from Algam.

[6] Sixteen days later the colt was moved up in class and started favourite for the Listed Silver Tankard Stakes at Redcar Racecourse but ran poorly on the soft ground and finished seventh of the eight runners.

[8] At Royal Ascot on 22 June Old Persian was stepped up to Group 2 class for the King Edward VII Stakes and started the 9/2 third choice in the betting behind Delano Roosevelt (runner-up in the Derrinstown Stud Derby Trial) and Raa Atoll.

In the Group 2 Great Voltigeur Stakes over one and a half miles at York Racecourse on 22 August Old Persian was ridden by James Doyle while Buick partnered the stable's more fancied runner Cross Counter.

Old Persian raced in second place behind the pacemaker Nelson before taking the lead three furlongs out and held off the sustained challenge of Cross Counter ro win by a short head.

[11] Old Persian started at odds of 8/1 for the St Leger Stakes over fourteen and a half furlongs at Doncaster Racecourse on 15 September but after briefly taking the lead in the straight he was overtaken and came home fifth behind Kew Gardens.

Ridden by Buick he produced a strong late run to take the lead in the closing stages and won by a short head from Racing History with three lengths back to Desert Encounter (Canadian International Stakes) in third place.

Racing History and Desert Encounter while the other runners were Magic Wand and Hunting Horn from Ireland and a three-strong Japanese contingent comprising Rey de Oro, Suave Richard and Cheval Grand.

"[16] On his return to Europe Old Persian started second favourite for the Coronation Cup at Epsom Racecourse on 31 May but never looked like winning and after being hampered approaching the final furlong he faded badly and came home seventh behind Defoe, beaten more than fourteen lengths by the winner.

On 11 August he was sent to Germany and started favourite for the Grosser Preis von Berlin but finished third to French King and Communique after being denied a clear run in the closing stages.

"[17] On 2 November at Santa Anita Park Old Persian started third favourite for the Breeders' Cup Turf but failed to reproduce his best form and finished eleventh of the twelve runners behind Bricks and Mortar.