Prix Hocquart
Souverain recorded his first important success when he won the three-year-old version of the Prix Jean Prat over 2000 metres at Longchamp Racecourse in April. A month later he finished third to Adrar in the 2400 metre Prix Hocquart. The colt returned to Longchamp in July for the 3000 metre Grand Prix de Paris for which he started a 53.5/1 outsider. Ridden by Marcel Lollierou he won by a short head from the Prix du Jockey Club winner Prince Chevalier. The result was decided by a photo finish, then a relatively new technology which was not introduced to Britain until 1947. In October, Souverain recorded another important success when he defeated Prince Chevalier in "storming fashion" in the Prix Royal Oak, the French equivalent of Britain's St Leger Stakes.