sentences:  Gun Runner was a contender for the American classic races as a three-year-old colt in 2016 and developed into the top older horse of 2017 when he won five of six starts including the Breeders' Cup Classic.He also won the Stephen Foster, Whitney and Woodward.On May 5, 2018, Asmussen earned his 8,000th win with Lookin At Lee at Churchill Downs.