Field of 10 includes Kentucky Derby winner who tested positive following his big win and stablemate Concert Tour, both trained by Baffert.
Medina Spirit and mate Concert Tour are permitted to race in the Preakness Stakes May 15 against eight others.
Trainer Bob Baffert confirmed in a press conference Sunday morning findings of an anti-inflammatory in the Derby winner's test.
Kentucky Derby winner will face plenty of new faces in the second leg of the Triple Crown at Pimlico Racetrack in Baltimore.
Originally a $1,000 yearling purchase, Medina Spirit, owned by Amir Zedan, fends off all challengers to win 147th Kentucky Derby.
Gary and Mary West's undefeated colt has just five rivals in the final major stepping-stone event before the May 1 Kentucky Derby.
Gary and Mary West's unbeaten colt romps in the Grade 2 Rebel Stakes at Oaklawn Park to join trainer Bob Baffert's Derby team.
Bob Baffert trainee Life is Good waltzed to a huge win in the Grade 2 San Felipe to remain unbeaten; Woodbine stakes winner Helium wins Tampa.
New York Times' Joe Drape reports the third-place finisher in the Kentucky Oaks, Gamine, has come back with the Class C positive.
From post 16 to the lead and to the finish line in front, Authentic gives trainer Bob Baffert a record-tying 6th Derby win.
One of America's favourite horses made his first start for new trainer Bob Baffert and needed all of the 1 1/16 miles of the San Diego Handicap to win.