[1] In 1948 he opened his first doughnut shop in Temple City, California and earned the nickname "The Donut King".
[1] Winchell served as chairman of the board, president, and chief executive officer of Denny's until 1980.
The Winchells were co-owners of 2017 American Horse of the Year Gun Runner.
The Winchells won the 2014 Kentucky Oaks and Breeders' Cup Distaff with their homebred US Champion Three-Year-Old Filly Untapable, the 2012 Breeders' Cup Dirt Mile with Tapizar, and 2005 Kentucky Oaks with Summerly.
[2] Winchell died of a cardiac arrest in Las Vegas, Nevada, on November 26, 2002, at the age of 87,[1][3] at Summerlin Hospital.