SARATOGA SPRINGS, N.Y. - As the 2-year-old colt Soldier N Diplomat (Army Mule) was charging down the stretch at Saratoga Race Course Saturday afternoon, his owner, Vinnie Viola, up in his clubhouse box, was eyeballing him and the finish line at the same time. "I was holding my breath the whole way down," Viola said. Soldier N Diplomat had to hold off a late charge by Accost (MacLean's Music) to win the second race, a $100,000 maiden special event weight for 2-year-olds. At the end of the six furlongs, Soldier...