Adam Moffat scored from 38 yards in the first half as the Houston Dynamo beat the Los Angeles Galaxy 3-1 Sunday to secure a spot in the Major League Soccer Eastern Conference semifinals. Bobby Boswell and Carlo Costly scored second-half goals for the Dynamo, who strolled to victory against a Galaxy team that rested stars David Beckham and Landon Donovan before the playoffs. Houston needed to win its season finale to avoid playing in a wild-card round. The Dynamo finished second in the East and will face the Philadelphia Union in the home-and-home conference semifinals beginning Oct. 30 in Philadelphia. Houston will host the Union on Nov. 3. Galaxy rested starters including Beckham, Donovan and Irish forward Robbie Keane. Vidic retires Manchester United defender Nemanja Vidic confirmed his retirement from international duty Monday because of criticism of his attitude toward the national team. The last of Vidic's 56 appearances for his national team came against Slovenia this month, when he missed a penalty in a 1-0 defeat that cost Serbia a place in the playoffs for the 2012 European Championship. Vidic announced his decision in a statement carried by Serbia's football federation. “I wish to inform the public and the fans that after long consideration, with heavy heart, I decided to say goodbye to the Serbian team,” the 30-year-old Vidic said. “The main reason for this decision is that for a long time, especially in light of recent events, the media and thus the public criticized my attitude toward the national team, even though I sometimes played injured, sometimes against the will of my club,” Vidic said. “Therefore, I do not want to burden the next generation of our players before the new cycle of qualifications,” he added.