Satono Diamond  Satono Diamond (Japanese サトノダイヤモンド, foaled 30 January 2013) is a Japanese Thoroughbred racehorse. He showed promise as a juvenile in 2015 when he won both of his races. In the following year he developed into a top-class performer winning the Kisaragi Sho finishing third Satsuki Sho and taking second place in the Tokyo Yushun. In the autumn he was unbeaten in three starts, winning the Kobe Shimbun Hai, Kikuka Sho and Arima Kinen and took the JRA Award for Best Three-Year-Old Colt. Satono Diamond is a bay horse with a diamond-shaped white star bred in Japan by Northern Farm. In 2013 he was consigned as a foal to the JRHA Select sale and was bought for ¥241,500,000 ($2,272,400) by Hajime Satomi. Satomi, whose horses usually carry the "Satono" prefix sent the colt into training with Yasutoshi Ikee. In all of his races in to the end of 2016 Satono Diamond was ridden by the French jockey Christophe Lemaire. He is from the sixth crop of foals sired by Deep Impact, who was the Japanese Horse of the Year in 2005 and 2006, winning races including the Tokyo Yushun, Tenno Sho, Arima Kinen and Japan Cup. Deep Impact's other progeny include Gentildonna, Harp Star, Kizuna, A Shin Hikari and Makahiki. Satono Diamond is the first foal produced by Malpensa a mare who won three Grade I races in her native Argentina. She was descended from Royal Arch, an Irish mare who was exported to Argentina in the early 1930s. Satono Diamond made his racecourse debut in contest for previously unraced juveniles over 2000 metres at Kyoto Racecourse on 8 November and won by two lengths from Leukerbad. Racing over the same distance at Hanshin Racecourse on 26 December the colt followed up in a minor event, winning by three lengths from Queen's Best. The colt began his 2016 campaign in the Grade 3 Kisaragi Sho (a trial race for the Satsuki Sho) on 7 February over 1800 metres at Kyoto. He started the 1/5 favourite against eight opponents and won by three and a half lengths and a head from Les Planches and Leukerbad. In the Satsuki Sho over 2000 metres at Nakayama Racecourse on 17 April Satono Diamond was made the 1.7/1 favourite ahead of the Japanese champion two-year-old colt Leontes in an eighteen-runner field.