The Yankees have spent three-plus weeks now being outplayed by their opponents — and beating themselves.

The Yankees have spent three-plus weeks now being outplayed by their opponents — and beating themselves.

At times like these, with his team looking like it has forgotten how to win a game, Aaron Boone explained he listens only to music on his rides to and from the ballpark and watches just “Seinfeld” repeats.

The Yankees intend to promote Cam Schlittler to make his major league starting debut either Tuesday or Wednesday at home against the Mariners, The Post has learned.