Kentucky Derby winner Orb grazes after arriving at Pimlico Race Course in Baltimore, Monday, May 13, 2013. Orb is scheduled to run in the Preakness Stakes on May 18. (AP Photo/Patrick Semansky)

Associated Press
Kentucky Derby winner Orb grazes after arriving at Pimlico Race Course in Baltimore, Monday, May 13, 2013. Orb is scheduled to run in the Preakness Stakes on May 18. (AP Photo/Patrick Semansky)
Kentucky Derby winner Orb grazes after arriving at Pimlico Race Course in Baltimore, Monday, May 13, 2013. Orb is scheduled to run in the Preakness Stakes on May 18. (AP Photo/Patrick Semansky)
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