Medina Spirit, who tested positive for the banned medication betamethasone following a win in the Kentucky Derby on May 1 at Churchill Downs, worked a half-mile in 49.80 seconds on Thursday at Del Mar, his first recorded workout in more than six weeks.
Medina Spirit has not started since a third-place finish in the Preakness Stakes on May 15 at Pimlico. Trained by Bob Baffert, Medina Spirit worked three furlongs in 37.60 seconds on June 14 at Santa Anita.