SARATOGA SPRINGS, N.Y. - Just after 6:30 on a dreary, rainy Thursday morning, a 4-year-old gelding named Corruption (Medaglia d'Oro), with a long white blaze on his face, stuck his dark brown head out of his stall at Hall of Fame trainer Mark Casse's barn on the Saratoga backstretch. Bright-eyed and inquisitive, he gobbled up a peppermint. If he could have spoken, he might have said, 'what's the big deal? I feel fine." About 15 1/2 hours prior, he wasn't. After winning Saratoga's fourth race on Wednesday and returning to...