retain her position as US Champion Older Dirt Female Horse. Allen E. Paulson's two-time winner of the event, Azeri would become US Horse of the Year in 2002. Zenyatta proved her dominance in this event winning it three times and with that she continued on winning the 2009 Breeders' Cup Classic and in 2010 becoming US Horse of the Year. Records Speed record: : 1:40.00 – Matching (1982) (new stakes and track record) Speed record: 7 lengths – Beholder (2015) Most wins: 3 – Zenyatta (2008, 2009, 2010) Most wins by a jockey: 7 – Chris McCarron (1981, 1988, 1994, 1995, 1996, 1997, 2000) Most wins by a trainer: 5 – John W. Sadler (2006, 2014, 2016, 2017, 2019) Most wins by an owner: 3 – Sidney Craig (1992, 1994, 1996) 3 – Jerry and Ann Moss (2008, 2009, 2010) 3 – Hronis Racing (2014, 2016, 2017) Winners Legend: Notes: § Ran as an entry † In the 1937 the event was restricted to two year olds bred in California See also List of American and Canadian Graded races External links 2020 Del Mar Media Guide References Del Mar Racetrack Horse races in California Breeders' Cup Challenge series Grade 1 stakes races in the United States Mile category horse races for fillies and mares Recurring sporting events established in 1937 1937 establishments in California