The Miami Marlins completed a three-game sweep Sunday, defeating the Washington Nationals 4-2 to move 10 games over .500 for the first time in 12 years. The Marlins improved to 41-31 and are off to the second-best start in franchise history through 72 games, behind only the 1997 team that was 43-29 and went on to win the World Series. Miami, which is 10 games over .500 for the first time since May 28, 2011, has swept the Nationals in three of its four trips to Washington since the start of last season.