YANKS BLOW IT

Swept by Sox in 10th-inning heartbreaker

BOSTON — For 3 ¹/3 innings Sunday night, the new-and-improved Yankees bullpen delivered just what it was designed to do.

David Robertson, Zach Britton and Dellin Betances didn’t give up a run, as the Yankees took a lead in the seventh against the Red Sox as they looked to avoid a four-game sweep.

But then Aroldis Chapman entered and torpedoed their effort, giving up three runs in the ninth to send the game to extra innings, where the Yankees’ lost 5-4 in 10.

The closer entered with a three-run lead and for the second time in five outings completely disintegrated.

Chapman came in to face left-handed-hitting Brock Holt and got him looking after going to a full count for the first out.

That’s when things began to unravel for Chapman, who hadn’t pitched since Tuesday, when he struck out the side for a second straight outing.

With one out Sunday, Chapman walked the No. 9 hitter, Sandy Leon.

Leadoff hitter Mookie Betts followed by working another full count and also drawing a walk.

That brought up Andrew Benintendi as the potential tying run, but Chapman got the lefty-swinging Benintendi looking for the second out.

Chapman went to a full count again on Yankee killer Steve Pearce before walking him, as well, to load the bases.

That brought up J.D. Mar- tinez, whose line drive just went over a leaping Gleyber Torres at second for a two-run single, cutting the Yankees’ lead to one run.

With pinch-runner Jackie Bradley Jr. at second Xander Bogaerts grounded to third, but Miguel Andujar bounced the throw to first, and Greg Bird, who entered the game as a defensive re- placement in the seventh, couldn’t come up with it. The ball bounced far enough away from him that Bradley was able to come home with the tying run and incredibly, the Yankees’ lead was gone.

With Jonathan Holder up in the bullpen, Chapman managed to whiff Mitch Moreland after a grueling, 39-pitch inning.