SARATOGA SPRINGS, N.Y. - All summer long, Hall of Fame trainer Todd Pletcher has fielded questions, seemingly daily, about the two marquee older horses that live in his barn at the Oklahoma Training Track. The goal, Pletcher said, was to keep Fierceness (City of Light) and Mindframe (Constitution) as far apart from each other as possible. On the racetrack that is. Mission accomplished. That weekend is here, and the two 4-year-olds are spending it on opposite ends of the country. Fierceness is in California to run in the GI, $1...