WEST PALM BEACH, Fla.—The United States moved within a win of qualifying for the Olympic baseball tournament, routing Canada 10-1 Friday night in a game that included a 30-minute delay in the eighth inning when a ball initially called a two-run homer was changed to an RBI double. The Americans (2–0) would reach the Olympics if they beat Venezuela (1–1) on Saturday night at Port St. Lucie. If the United States loses, the berth at this tournament would come down to tiebreakers. The Dominican Republic (1–1) plays Canada (0–2) earlier Saturday at West Palm Beach. Phillies prospect Luke Williams had a solo homer and a two-run double, falling a triple short of a cycle. Todd Frazier hit a two-run homer that capped a seven-run eighth, and former Olympic speed skater Eddy Alvarez had an RBI triple. Drew Parrish, a 23-year-old right-hander in the Royals organization, won by pitching two scoreless …