WASHINGTON — The Miami Marlins went from pitching a no-hitter through six innings to needing extra innings to beat the Washington Nationals 7-4 on Sunday at Nationals Park. Pablo Lopez went to the mound in the seventh inning having not allowed a hit despite not having his best command. He maneuvered around traffic caused by walks and hit batters with the help of his defense. Things got interesting after that. The seventh inning: The Nationals broke up the no-hit bid, then broke up the shutout, then tied the game. The eighth inning: The Nationals took the lead on a Josh Bell solo home run on a …