NEW YORK—Jorge Posada ripped a game-winning single to center field off Shawn Camp in the bottom of the 12th inning as the Yankees posted a 6-5 Independence Day victory over the Blue Jays on Saturday at Yankee Stadium. Camp opened his third frame of work by allowing a double to Mark Teixeira that struck the first-base bag. An intentional walk to Alex Rodriguez followed, and Robinson Cano bunted into a fielder’s choice before Posada came through with the hit to end it....