BOSTON – For a while, the story was Sonny Gray’s near no-hitter, which ended with one out in the eighth. Then, the focus shifted to Aroldis Chapman blowing his second save in a week and Wilyer Abreu having some rare defensive breakdowns in right field. But in the end, it was all about a walk-off pile – just the second this season for the Red Sox, who capped off a rare four-game sweep of the rival Yankees in dramatic fashion, winning, 5-4, in 10 innings. When interim manager Chad Tracy was holding his press conference after the game, fans could be heard from the concourse shouting, “Let’s go Red Sox!” It was the type of deafening chant that hasn’t been heard often for a team that is 10 games under .500 (36-46) after its first four-game winning streak of the season. “We hear it now, though,” said Tracy. “That was a special four days, and they were into it. That was loud.”