Joe Girardi is fully aware of the numbers and understands the incessant speculation, but he said no matter how well Masahiro Tanaka pitches on an extra day of rest, the Yankees aren’t built to handle a six-man rotation.

“The only way you can do a six-man rotation is if you have a 13-man pitching staff,” he said. “I don’t think, with our club, we’re really equipped to do that. There’s just a lot of complications to it.”

The Yankees called up Chad Green from Triple-A Scranton/Wilkes-Barre and sent down Nick Goody on Thursday, lending credence to the idea that Green would start Friday night to give Tanaka that invaluable extra day. But, Girardi said, Green’s role would be in long relief, particularly because the Yankees didn’t have Dillon Betances on Thursday (rest) and Anthony Swarzak pitched 2 2⁄3 innings Tuesday.

Green came in with two outs in the seventh and pitched 2 1⁄3 scoreless innings, quashing the possibility of a start Friday. Otherwise, Girardi said he would have been open to the idea.

In eight games on regular rest this season, Tanaka is 1-2 with a 5.33 ERA. He’s 4-0 with a 1.05 ERA in seven games on five days’ rest, and 2-0 with a 3.18 ERA in four games on six or more days’ rest.

Headley: Son doing fine

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Chase Headley, who left the Stadium before Wednesday night’s game to attend to a personal matter, said he rushed his 4-year-old son, Colt, to the hospital after complications from minor surgery during the All-Star break. “He’s doing a lot better and he’s in great condition,” he said of the boy, who sometimes is seen roaming the clubhouse. Headley, who was not there before the game Thursday, grounded out as a pinch hitter in the eighth.

Joe: Don’t tie managers’ hands

Girardi said he’s opposed to limiting the number of relievers a manager can use in a game, a proposition made by commissioner Rob Manfred to speed up play. “We’re going to change the way you play the game and try to win games?” Girardi said. “I think that’s completely too drastic. You want to shorten the game, make it seven innings.”