Frankel has won all 14 of his races, after coming first in his final race at Ascot today.
Horse racing history could set to be made tomorrow as Frankel aims to retire undefeated.
Victory for Newmarket-trained Frankel
Superhorse Frankel appeared before his home crowd in Newmarket today. After 13 wins from 13 starts he's earned £2.3m in prize money and become the highest rated racehorse in the world.
Soon he'll go to stud where he's expected to earn £100m.
Today his fans in Newmarket got their chance to say goodbye.
Frankel, the world famous racehorse, is due to retire after Ascot and could end his career with an unbeaten record.
Our reporter Stuart Leithes has been to Newmarket to watch him in training.
Frankel will be making a public appearance during the Cambridgeshire Meeting at Newmarket on Saturday.