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.
The draw for posts for the second jewel of the Triple Crown has been moved to May 11 as officials await further tests on Derby winner.
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.
Tall and leggy Tapit colt leads the east coast on the road to the Kentucky Derby for Courtlandt Farm, Shug McGaughey.