ATLANTA — The Yankees have been here before.

A bad series in Boston in mid-June setting off an early-summer swoon and trudging into the All-Star break having lost their division lead. It was just last year and, of course, the Yankees eventually righted the ship — right around the trade deadline when their main addition provided a spark — and made it all the way to the World Series.

Over their final 66 games, beginning Friday against the Braves, the Yankees will try to repeat history except with a better ending, though they have plenty of work to do in order to get there.

Entering the break, Aaron Boone described his club as “incomplete.”