1952: two-year-old season As a two-year-old Premonition did not run until the autumn. He won two races, including the Gainsborough Stakes over one mile at
Hurst Park Racecourse. Premonition was then prepared for the St Leger. In August he won the
Voltigeur Stakes at York from Empire Honey, who had finished ahead of him in the Derby. In the St Leger at
Doncaster in September, Premonition started at odds of 10/1, with Aureole, who was also trained by Boyd-Rochfort being made favourite at 6/4, and the French-trained Northern Light, winner of the
Grand Prix de Paris also being strongly fancied. Both the Queen and
Sir Winston Churchill were in attendance on a fine autumn day which attracted a crowd of 250,000 to the Yorkshire course. Ridden by Eph Smith, Premonition stayed on strongly in the straight to take the lead and won going away by three lengths from Northern Light, with Aureole in third.
1954: four-year-old season In 1954, Premonition was prepared for the major staying races. To assist his preparation, Wyatt purchased a supposedly ordinary French horse named Osborne to act as his training partner and
pacemaker. His season began successfully as he won the
Yorkshire Cup in impressive style by three lengths from Eastern Emperor, Childe Harolde and Osborne. Premonition and Osborne ran next in the Winston Churchill Stakes at Hurst Park. Before the race, Boyd-Rochfort told Osborne's rider, an inexperienced jockey named Royce Burrows, to set the pace for Premonition, the 1/8 favourite, and to "be second if you can". Osborne led Premonition into the straight, where it soon became apparent that he was travelling much more easily than his better fancied stable companion. In the closing stages, Burrows made little attempt to ride a finish, allowing the hard-ridden Premonition to win by a head. The racecourse stewards held an enquiry and referred the matter to the
Jockey Club, which fined Boyd-Rochfort £100 for his ambiguous instructions to Burrows. Boyd-Rochfort responded by saying that the punishment seemed to question his honesty and that he felt like retiring from the sport. Premonition never recovered his best form, finishing unplaced in both the
Ascot Gold Cup and the
King George VI and Queen Elizabeth Stakes. Osborne, however, went on to win the
Goodwood Stakes in July under top weight of 133
pounds and the
Doncaster Cup in September. ==Assessment==