There were no positive drug tests—on out-of-competition and pre- and post-race—at this year’s Breeders’ Cup World Championships, the organization announced Nov. 8.

Breeders’ Cup completed an extensive out-of-competition and pre- and post-race testing program at this year’s World Championships, held Nov. 2-3 at Churchill Downs, in Louisville, Kentucky, which included the testing of 289 horses.

This year the organization continued its expansion of its most comprehensive testing program. Out-of-competition testing began in June with all Breeders’ Cup Challenge winners and other targeted possible starters in both North America and overseas and continued right up until the Championship races