SEATTLE — Luis Severino’s next step on what has been a long trip to his first taste of the big leagues this year will be Sunday when he pitches at home for Triple-A Scranton/Wilkes-Barre.

Because of Hurricane Dorian likely hitting Florida, Severino’s first game on a minor league rehab assignment was shifted to Double-A Trenton then moved to SWB. The shift didn’t have anything to do with the Yankees wanting Severino to face Triple-A hitters instead of Double-A batters.

“Feel better about that mound,’’ Aaron Boone said of the switch.

Severino went down in spring training with an inflamed right rotator cuff and suffered a lat muscle problem while working back from the original injury.

Where Severino, the Yankees’ former ace, fits when, or if, he comes off the IL is unknown.

“I don’t know if it is necessarily where he can immediately help us. It is what makes the most sense in building him up the right way so that he can impact us the most down the stretch and hopefully in the postseason,’’ Boone said before the Yankees’ 7-3 win over the Mariners on Wednesday night.

The Yankees’ 47-20 record since June 15 is the best in the majors.

In addition to a monster home run in the first inning, Gary Sanchez also threw out two Mariners attempting to swipe second base Wednesday. Asked what he enjoyed more, the homer or nailing two runners, Sanchez couldn’t pick a favorite.

“Anytime you have the opportunity to help the team either way, behind the plate or in the box I like it all,’’ Sanchez said.

According to Boone, the Yankees could decide soon how to get Giancarlo Stanton to graduate from batting practice to live pitching.

“I would say he is getting pretty close to going and seeing some pitching,’’ Boone said of the outfielder who took batting practice on the field before Tuesday night’s game and is on the IL with a sprained right knee. “How we do that, whether we send him down to Tampa, get him live at-bats or whatever. I would say he is probably getting close to that but honestly not quite sure when he would do that.’’

Dellin Betances came through a throwing session on Wednesday well and, according to Boone, will do another simulated-game type activity on Saturday. … Jordan Montgomery will make his second minor league rehab start for SWB on Friday.