Bob Baffert, trainer of Kentucky Derby winner Medina Spirit, stands near the track at Churchill Downs in Louisville, Kentucky, April 28, 2021.

Hall of Fame horse trainer Bob Baffert launched a federal lawsuit Monday night against Churchill Downs, claiming his two-year suspension by the track is a "malicious" effort aimed at "destroying" his career.

The lawsuit filed in the Western District of Kentucky came days after one of Baffert's most famous horses, Medina Spirit, was posthumously stripped of his Kentucky Derby win last year.