DETROIT - The San Francisco Giants overcame injuries and potentially devastating roster changes to claim their second World Series crown in three years because they are an unselfish club with a common goal, pitcher Matt Cain says. "A lot of guys are loose and relaxed, and it just seemed like all the pieces fit together," Cain said after the Giants completed their four-game blowout of the Detroit Tigers. The Giants lost closer Brian Wilson during the first week of the season and then endured the 50-game, drug-related suspension of All-Star game MVP Melky Cabrera in August. ...