MIAMI - Silver Wagon, upset winner of the Hopeful Stakes and the No. 1-rated male 2-year-old in the country in Daily Racing Form's Watchmaker Watch, has returned to training at his home base at Calder. And while his connections have yet to confirm Silver Wagon's next start, trainer Ralph Ziadie said Wednesday that Belmont's Grade 1 Champagne Stakes on Oct. 4 remains under serious consideration.