SARATOGA SPRINGS, N.Y. - By his measured standard, Hall of Fame trainer Todd Pletcher--rarely one to over-hype his horses-- practically gushes when he talks about Nest (Curlin). "She's just pure class in everything she does," Pletcher said. "If they were all like her, it'd be a much easier game than it actually is." Co-owner Mike Repole, an enthusiastic promoter of his horses, talks about the 4-year-old in almost reverential terms. "I've been blessed to have so many special, great horses, but she has a brilliance about her," Repole said. "The...