PORT ST. LUCIE — Aaron Judge didn’t get into specific reasons Wednesday on The Players’ Tribune podcast as to why he is leaning toward not participating in this upcoming season’s Home Run Derby.

“I think I am one and done,’’ said Judge, who won last year’s event in Miami, but went into a deep slump after.

Judge didn’t blame the Home Run Derby for causing a left shoulder injury that required surgery in November or for his slump after the All-Star break.

In 84 games before the Home Run Derby, Judge batted .329 with 30 homers, 66 RBIs and a 1.139 OPS. In the first 60 games after the break, Judge hit .195 (40-for-205) with 14 homers, 31 RBIs and a .797 OPS.

MLB, which lobbied hard for Judge to participate in the Home Run Derby, no doubt will try to change the right fielder’s mind considering how big of a draw he was last year.

According to manager Aaron Boone, Jacoby Ellsbury and Clint Frazier are taking steps toward getting back on the field.

Ellsbury is working back from an oblique problem and Frazier from a concussion.

“Better, [Tuesday] was a step in the right direction. Ells started to ramp some things up and started to do some things physically, too,’’ Boone said. “Frazier played catch after his bike session. Hopefully it’s steps in the right direction and we can start maybe seeing the light about a possible game but we will see how [Wednesday] shakes out.’’

Frazier ran on a treadmill and threw and said he felt fine.

Boone said he was aware the Rays are going to use a four-man rotation instead of the customary five starters and while he hasn’t discussed that with his staff, Boone has given it a thought.

“Not with our situation, but I have thought about it over the years. That is something that if you had a deep pen and you went eight- or nine-men bullpen and you were going to have a couple of long guys in that role, I think there is an avenue that could work,’’ Boone said.

It’s going to take at least two injuries to put outfielder Billy McKinney in position to make the Yankees, but for the second straight day Wednesday he homered, clubbing a grand slam against the Mets.

Estevan Florial finally proved he is human. He was called out on strikes in the second inning and dropped a fly ball in short center in the third that allowed two Mets runs to score. “I just dropped it,’’ said Florial, who didn’t use the sun, wind or a long run as excuses.

Domingo German, who will start the season as rotation insurance, ran into trouble in the third, but the second inning was a gem when he struck out three players with very impressive résumés. The right-hander got Todd Frazier, Adrian Gonzalez and Jose Reyes swinging.

Luis Severino starts as the Yankees host the Phillies at George M. Steinbrenner Field.