CHICAGO — Because Aroldis Chapman wasn’t available to pitch on Tuesday night when a save situation presented itself against the White Sox, an alarm went off.

The Yankees already were working without Aaron Judge and Gary Sanchez. And even as deep as their bullpen is, Chapman would be a big loss if there were something seriously wrong.

Following the 13-inning win Tuesday, Aaron Boone said it was general body soreness that kept the closer out and Chapman said it was in his back after throwing 39 pitches on Sunday night in Boston, when he flushed a three-run lead in the ninth inning of game the Yankees lost in 10.

Chapman said he was available if needed Wednesday, but he was not in the Yankees’ 7-3 win, although he warmed up in the ninth inning.

“I feel better today. The back is fine. It is just overall being sore from the amount of pitches on Sunday,’’ Chapman said through an interpreter before the game. “Before that I had [four] days without pitching in a game. When that happens it takes a little longer to recuperate. Today I am good and will be ready for tonight.’’

Chapman, who was picked to be an All-Star, but didn’t pitch in the game because he wanted to rest his balky left knee, has 29 saves in 31 chances.

Armed with a 7-3 lead going into the home ninth Wednesday, Boone called for Jonathan Holder instead of Chapman. Before Holder threw his first pitch, however, Chapman was tossing lightly in the Yankees’ bullpen. Holder got the first two outs, gave up a single and ended the game on Ryan LaMarre’s liner to Brett Gardner in left.