香港ヴァーズ
Mastery (foaled 25 February 2006) is a British Thoroughbred racehorse. In a racing career which lasted from October 2008 until 2010 he ran thirteen times and won five races. As a three-year-old in 2009 he won the Derby Italiano and the St Leger. In 2010 he won the Hong Kong Vase.