Firing Line, winner of the 2015 G3 Sunland Derby and runner-up in the Kentucky Derby that year, will be forced to miss his intended start in Wednesday's Harry Brubaker Stakes after suffering a minor setback.
Trainer Simon Callaghan told the Blood-Horse that the colt appears to have strained a muscle.
“He's just a bit tight behind,” Callaghan said. “It looks like a muscle thing. He's sound, but it's something small.”
Firing Line was sidelined close to a year after dealing with a foot issue and having a chips removed from both of his front ankles. The colt finished fifth in an optional claiming race at Santa Anita July 9 in his first start back.
Callaghan indicated he was still hopeful of being able to make the Breeders' Cup with the colt.
Read more in the Blood-Horse
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