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Mark Dedomenico was also a heart surgeon who worked with other surgeons to develop coronary bypass surgery.
Mark Dedomenico, an influential heart surgeon and longtime Thoroughbred owner who was a member of the partnership that raced the legendary filly Blind Luck, died on Saturday in Washington state.
Dedomenico was 87. His death was announced by Emerald Downs officials on Sunday.
As a horse owner, Dedomenico raced frequently in the Pacific Northwest and California. He owned the Pegasus training center in Redmond, Wash., which opened in 2005 and is held in high regard throughout the West Coast.