Mozu Ascot is an American-bred Japanese-trained Thoroughbred racehorse who won Grade 1 races on turf and dirt. He did not race as a two-year-old in 2016 but in the following year he won four minor races. As a four-year-old he won the Yasuda Kinen as well as finishing second in the Hankyu Hai, Yomiuri Milers Cup and Swan Stakes. He failed to win in 2019 but returned to winning form when switched to race on dirt in 2020, taking the Negishi Stakes and the February Stakes. He was retired from racing at the end of the season.

The Yasuda Kinen is a Japanese International Grade I Thoroughbred horse race held at the Tokyo Racecourse in Tokyo. Raced annually each June, the Yasuda Kinen is run at a distance of eight furlongs on turf and is open to horses three years of age and up. The event was first run in 1951 as the Yasuda Sho in honor of Izaemon Yasuda, the founding chairman of the Japan Racing Association. Following the death of Mr. Yasuda, in 1958 the race name was changed to the Yasuda Kinen.