J.D. Martinez hit a three-run homer and Freddie Freeman had a two-run double during the Dodgers' six-run fifth inning, and Los Angeles rolled to a 6-1 victory over the Washington Nationals on Monday night. Bobby Miller (2-0) yielded four hits and a run over six innings in his second consecutive victory to begin his career with the NL West-leading Dodgers, who returned from a mediocre 10-game road trip and posted another lopsided win at home, where they've won 12 of 13 since late April.