MIAMI — Justin Upton went 4 for 4, including his sixth home run, and Paul Maholm allowed one hit in seven sharp innings to help the Atlanta Braves spoil the Miami Marlins' home opener Monday by winning 2-0. The Braves earned their fourth consecutive victory and improved to 6-1, their best start since 2007. The Marlins lost their third game in a row and fell to 1-6, their worst start since 2006.