MIAMI — Todd Cunningham had three hits in his first big league start, including a tiebreaking single in the eighth inning, and the Atlanta Braves overcame two solo home runs by Giancarlo Stanton to beat the Miami Marlins 5-3 on Friday night.Major league batting leader Dee Gordon went 3 for 5 for Miami, hiking his average to .433. It was his 11th game with three or more hits. Stanton’s second homer was a tape-measure shot that tied it in the seventh.