BOSTON — The Yankees have stayed atop the AL East even in Aaron Judge’s absence for numerous reasons, but playing clean baseball could be at the top of the list. With less margin for error, there’s less room for defensive mistakes. Join Post Sports+ for exciting subscriber-only features, including real-time texting with Greg Joyce about the inside buzz on the Yankees. Try it free So the season-high four errors they made in Thursday’s 6-3 loss to the Red Sox at Fenway Park were especially tough.