BOSTON — John Lackey pitched neatly into the seventh inning and the Boston Red Sox beat the Atlanta Braves 4-0 Wednesday night, their third straight victory after their longest losing streak in 20 years. The Red Sox honored Manny Ramirez, Pedro Martinez, Curt Schilling and members of their 2004 World Series championship team before the game, then put on another winning performance at Fenway Park. Jackie Bradley Jr., A.J. Pierzynski and Jonny Gomes each had had two hits and an RBI as the Red Sox extended their mastery over the Braves after beating them in Atlanta on Monday and Tuesday nights.