Sanchez starting rehab Wednesday

BALTIMORE — They come and go as often as regulars on the Long Island Railroad, and AllStar catcher Gary Sanchez is preparing to return from the injured list for the second time this week.

Out since July 24 with a strained left groin, Sanchez is scheduled to begin a minor league rehab assignment Wednesday.

“Wednesday and Thursday with [Triple-A Scranton/WilkesBarre], catch both days and hopefully travel to us in Toronto and be an active player,’’ Aaron Boone said before his team beat the morbid Orioles, 9-6, at Camden Yards on Monday evening.

While the Yankees certainly miss Sanchez’s power potential (he leads the club with 24 homers) the combination of Austin Romine and Kyle Higashioka has been more than adequate filling in for Sanchez at the plate.

Romine homered Monday and the duo is hitting .293 (12-for-41) with four homers and 11 RBIs since Sanchez went down. From June 23 to July 23, Sanchez appeared in 21 games, hit one homer, drove in six runs and hit .118 (10-for-85) with a .370 OPS.

After the victory Monday, Boone announced Jonathan Holder will serve as the opener for the first time this season. Reliever Chad Green has started nine games this season, but threw 25 pitches as the opener in the second game of Saturday’s doubleheader against the Red Sox and threw 24 pitches as the closer Sunday night against Boston.

Out all season with shoulder issues, Luis Severino is moving closer to throwing off a mound. According to Boone, the former staff ace has one more flat-ground session Wednesday. If that goes well, the plan is for a bullpen session Friday in Toronto.

CC Sabathia threw on flat ground Monday for the first time since landing on the injured list on July 28 with right knee inflammation.

“See how he comes out of that, I am assuming everything was good,’’ Boone said. “Then we will start putting a plan moving forward.’’