DEL MAR — Six months after Sovereignty won the Run for the Roses, trainer Bill Mott admits he was still looking at the colt “with rose-colored glasses” Tuesday morning when he sounded hopeful about America’s top-ranked thoroughbred being able to race in Saturday’s Breeders’ Cup Classic.

Wednesday morning, Mott announced Sovereignty will be scratched, a decision made after the return Tuesday afternoon of a fever that first appeared late Monday.

About 20 hours earlier, Mott had estimated it was “a 50-50 shot” that Sovereignty’s temperature would remain normal after medication.

“I actually started thinking, ‘You know what, We might be OK here.’ And then, in just a matter of hours, my optimism was taken away,” Mott said in the Del Mar barns area. “When he had a real mild fever and we med

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