BOSTON — David Ortiz and the Boston Red Sox romped to their third World Series championship in 10 seasons, thumping October ace Michael Wacha and the St. Louis Cardinals 6-1 Wednesday night in Game 6. Shane Victorino drove in four runs and John Lackey pitched shutout ball into the seventh inning as the Red Sox clinched a crown on their own field for the first time since 1918. Fenway Park was rollicking, with the crowd standing from the very first pitch.