グリーナムステークス
Although he was ineligible for the classics, Reform began his second season in the seven furlong Greenham Stakes, which is regarded as a trial race for the 2000 Guineas. He appeared short of full fitness and was beaten a neck by Play High, with Wolver Hollow in third place. At the Epsom Derby meeting, Reform won the eight and a half furlong St James's Stakes, the race now known as the Diomed Stakes, beating Golden Horus, a colt who had won the July Stakes and Gimcrack Stakes in 1966 and had finished fourth to Royal Palace in the 2000 Guineas. At the same Epsom meeting, Royal Palace won the Derby.