Equinox, the horse who last Sunday caused jaws to drop in the Japan Cup, has run his last race.
It was announced late on Thursday afternoon that the four-year-old son of Kitasan Black had been retired to stand at Shaddai Stallion Station.
His fee will be set at a later date.
Equinox, who is out of the King Halo mare Chateau Blanche, affirmed his status as the world's best racehorse with a four-length romp in the Group 1 Japan Cup (2400m).
The Japan Cup was Equinox's sixth-straight win and stretched his career record to eight wins from 10 starts with the two defeats both second placings.
His other Group 1 wins came in the 2000m Tenno Sho at what was his second-last start, a race he also won last year, Takarazuka Kinen (2200m), Dubai Sheema Classic (2410m) and last year's Arima Kinen (2500m).