King Of Steel provided Frankie Dettori with the perfect send-off as they combined for a fairytale success in the Qipco Champion Stakes at Ascot.
Roger Varian's Derby runner-up was the Italian's final mount on British soil before jetting off for his new venture in California and they proved a match made in heaven in the British Champions Day feature.
Dettori's historic achievements at Ascot need no introduction, but it is also the scene of some of King Of Steel's finest performances this term, including a victory in the King Edward VII Stakes at Royal Ascot.
Placed towards the rear of the field as a lit-up My Prospero took the field along, Dettori had to be at his very best as he steered the son of Wootton Bassett from last to first.
The duo still had plenty of ground to make up as the final furlong loomed, but the stamina reserves of the 3-1 favourite kicked into top gear when it mattered most, to ensure the Dettori swansong got its ultimate conclusion and the crowds burst into raptures chanting the Italian's name.
King Of steel came home three-quarters of a length clear of George Boughey's filly Via Sistina, with French raider Horizon Dore back in third.
Elsewhere at Ascot, there was a French win in the Queen Elizabeth II Stakes at Ascot as Big Rock delivered a devastating display.
Often the bridesmaid when racing at the highest level this year, the son of Rock Of Gibraltar had finished second in the Prix du Jockey Club, Prix Jacques le Marois and Prix du Moulin in his last three starts.
However, Christopher Head's brilliant colt finally got his moment in the spotlight, making every yard in the one-mile Group One feature.
Immediately taking his customary position at the head of proceedings, his rivals were left chasing shadows as big-race jockey Aurelien Lemaitre kept upping the tempo.
Having built up a healthy lead, it was Dermot Weld's Tahiyra who decided to break cover from the pack first, with Chris Hayes setting the Irish 1,000 Guineas heroine in pursuit.
But there was no catching Big Rock (5-1) who kept on galloping in the rain-softened ground to register an emphatic six-length success and also lead home a French one-two, as Jerome Reynier's Facteur Cheval stayed on past a tiring Tahiyra in the dying strides to grab the silver medal.
Short-priced favourite Paddington beat only two home, one of those being 2000 Guineas hero Chaldean.
