Frankel stormed to a 14th win in 14 races with victory in the prestigious Champion Stakes at Ascot to bring his glorious career to a likely end.
The four-year-old colt, trained by Sir Henry Cecil and ridden by Tom Queally, went off as 2-11 favourite and won by two lengths from Cirrus des Aigles.
Frankel, considered one of the best racehorses of all time, is now likely to be retired for a breeding career.
He is set to command £100,000 a time at stud, leading to a £100m valuation.
The £1.3m Champion Stakes is Europe's most valuable mile-and-a-quarter race and the highlight of British Champions Day - the richest day in British racing.
More to follow.