1998: two-year-old season Oath made his racecourse debut in a
maiden race at
Goodwood in June. Ridden by Tim Sprake, he finished fifth of the eight runners, beaten two and a half lengths in a race which looked very good in retrospect: the winner Muqtarib won the
Richmond Stakes in July, whilst the runner-up
Compton Admiral went on to win the following year's
Eclipse Stakes. At
Yarmouth in September, he finished third in a field of seventeen on his debut for Cecil, after appearing to have "every chance". Oath won at the third attempt in a maiden race at
Nottingham in October. He led early and ran on strongly after being headed to win by two and a half lengths from modest opposition. His official end of season rating of 91 suggested that he had a future as a racehorse, but that he was around thirty pounds below top class.
1999: three-year-old season Spring Oath's three-year-old debut in a minor stakes race at
Newbury showed that he had made some progress over the winter. He led from the start and stayed on well under pressure before finishing second, beaten a neck by the future
Group race winner Lucido. The race was also his first opportunity to race over middle distances, and his improvement suggested that his stamina would be a strength. The first indication that he might be a top class colt came in his next start, in which he was tried in
conditions race company for the first time in the Listed
Dee Stakes a recognised trial for the
Derby, run at
Chester. Oath showed ability far beyond anything he had previously revealed, by travelling "effortlessly", taking the lead two
furlongs from the finish, and winning by five
lengths, with Fallon easing the colt down in the closing strides. Fallon was pleased with the colt's progress, and
Willie Carson, representing the owners said that the colt was an ideal Derby type whilst expressing some doubts about his ability to stay the trip.
Summer The Derby of 1999, run in cold wet conditions, was a very open race, with many lightly-tested colts and only one previous Group One winner, the Irish-trained Saffron Walden. The highly regarded, but untested
Dubai Millennium started favourite at 5/1, with Oath and Lucido joint second in the betting at 13/2. Before the Derby, the horses are paraded in front of the stands. Fallon broke away from the parade early and took Oath, who was described as "restive" and "hot-headed" directly to the start. In the race Oath was always in contention, and turned into the straight in fifth place behind the leader All The Way. Two furlongs out
Daliapour was sent into the lead, and Fallon made his challenge on Oath. The two colts ran together for several strides before Oath pulled ahead and was driven out by Fallon to win by one and three quarter lengths. After the race Fallon was penalised for breaking out of the parade, although Cecil revealed that the jockey was acting under his instructions and had been told to "not worry about the fine." The plan was changed when an injury to Royal Anthem ruled him out of the King George and Oath was made the new favourite for the race. Shortly afterwards, Oath was withdrawn from the Irish Derby after performing poorly in a home gallop and so went straight to the race at
Ascot without another start. In the
King George VI & Queen Elizabeth Stakes Oath faced older horses, including the multiple Group One winner Daylami, for the first time. Oath, was still a relatively unexposed colt, and hopes that he was still improving led to him being sent off the 9/4 favourite. He ran well for most of the race, but when Fallon tried to move the colt towards the lead in the straight he was soon struggling and faded badly. He finished seventh of the eight runners, ahead Daliapour, in what the ''
Independent's'' correspondent described as a "lamentable" performance by the only two three-year-olds in the field. The reason for Oath's poor run was revealed shortly afterwards as he came back lame. Examinations revealed that he had broken a bone in his knee. The injury was so serious that the colt's connections said that it would be a "miracle" if he ran again that season, although there were hopes that he could return as a four-year-old. In October it was announced that Oath's racing career was over, and that he had been sold to Japanese breeders for $8,000,000. ==Race record==