1873: two-year-old season George Frederick was unplaced on his debut in a Biennial Stakes at
York in August, when he appeared less than fully fit. At
Doncaster in September he won the Municipal Stakes from the future
Epsom Oaks and
St Leger winner Apology and then finished third to Farnsfield in a six
furlong sweepstakes at the same course. He ran four times at Newmarket in autumn, winning the Boscawen Stakes and a Triennial Produce Stakes at the first October meeting but finishing unplaced in the
Middle Park Plate and the Criterion Stakes.
The Field described him as a promising colt, but not a potential Derby winner.
1874: three-year-old season George Frederick began his three-year-old season at Newmarket in April, when he finished third in a Biennial Stakes. He did not run in the
2000 Guineas, but reappeared in the Newmarket Stakes, in mid-May, which he won. He then performed very impressively in a private trial gallop. Although the ground was softened by heavy overnight rain, the weather on Derby day was fine and the crowd was as large as usual, with both Parliament and the Stock Exchange closing down for the day. George Frederick was moved up to take the lead early in the straight and was never threatened, winning easily by two lengths from Couronne de Fer, with Atlantic a neck further back in third. There were great celebrations on George Frederick’s return to Wiltshire: there was a procession through the streets of Swindon, with a local band playing "
See the Conquering Hero Comes" (a tune composed by
George Frederick Handel) on the Derby winner's arrival. At Wroughton the church bells were rung and the village was decorated in the red and black colours of the winning owner. George Frederick subsequently became difficult to train and never won again. He was expected to run in the St Leger and was heavily backed, but rumours of training problems surfaced and Cartwright was forced to prove the colt’s wellbeing by inviting members of the sporting press to view the horse at his stables. On the morning of the race, it was announced that the colt had suffered a leg injury and would not run, provoking a great deal of "bitter feeling", even though a veterinary certificate was produced to prove the legitimacy of the problem. ==Stud career==