Natroun over 2400 metres at Longchamp Racecourse on 7 May. Two weeks later he contested the Prix de l'Avre over the same course and distance and won by five lengths from Bilal. Following the race, the colt's owner paid a supplementary entry fee of approximately £15,200 to enter the horse in the Prix du Jockey-Club, reportedly at the urging of Saint-Martin. On 7 June, Natroun contested the 150th running of the Prix du Jockey-Club over 2400 metres at Chantilly Racecourse. In France, horses in the same ownership or stable are coupled for betting purposes. The Vincent O'Brien pair Ancient Times and
Jockey Club Stakes one or more of the season's Classic winners. It was extended to 1 mile and 6 furlongs in 1901. The race continued to be staged in the autumn until 1962. It was switched to the spring and cut to 1 mile and 4 furlongs in 1963. It was subsequently closed to three-year-olds. The Jockey Club Stakes is currently held on the opening day of Newmarket's two-day Guineas Festival meeting. It is run on the same day as the 2,000 Guineas. The leading contenders from the Jockey Club Stakes often go on to compete in the Coronation Cup. The last to