PHILADELPHIA — Sending Tylor Megill back to the minors isn’t the only change the Mets are making to their rotation.

Manager Buck Showalter said Friday the Mets will split up Max Scherzer and Justin Verlander after the two pitched back-to-back in the previous six turns through the rotation.

Scherzer will pitch Saturday against the Phillies, with Carlos Carrasco going Sunday. Verlander will start Monday versus the Brewers at Citi Field.

And the Mets will continue to look for a fifth starter now that Megill has joined David Peterson and Joey Lucchesi at Triple-A Syracuse.

Lucchesi would have figured to be an option to replace Megill in the rotation for the game Tuesday, but he pitched seven innings for Syracuse on Friday night.

Peterson has a 4.86 ERA, Jose Butto has also struggled at Syracuse and prospect Mike Vasil has made just two starts at Triple-A after his recent promotion.

Jose Quintana, rehabbing from rib surgery, is not a consideration to start Tuesday, according to Showalter. Quintana is scheduled to make a minor league rehab start Sunday, and while Showalter declined to publicly look too far ahead, the left-hander figures to need two more rehab starts before potentially joining the rotation during the road trip that begins July 4.

Megill pitched well at times this season, but was hit hard in four of his last six starts.

He was replaced on the roster by right-hander Vinny Nittoli, who was acquired from the Cubs on June 2 and pitched the bottom of the eighth inning of the 5-1 loss Friday in Philadelphia.

It was his first appearance in the majors since last year with the Phillies.

Nittoli gives the Mets another arm in the bullpen while they are without Drew Smith, who is still serving his 10-game ban for violating MLB’s ban on sticky substances. Smith is due to rejoin the team Monday.

Megill has struggled with his control, walking four in just 2 ¹/₃ innings in his most recent outing.

“The command has been the issue that’s been the most frustrating,’’ Showalter said. “He and Peterson have not commanded the ball like they have in the past.”

Both Megill and Peterson have disappointed in their attempts to stick in the rotation as the Mets have dealt with injuries.

Megill’s walk rate has nearly doubled since last season and Peterson was hit hard throughout his brief time in the majors this year.

Showalter acknowledged the Mets had higher hopes for both pitchers after they showed flashes last season.

“If you look at the body of work [from 2022], everything pointed to them taking another step,” Showalter said. “It’s been frustrating for them and us that it hasn’t happened.”

Jeff McNeil appeared to injure his left wrist while trying to tag Bryson Stott when the Phillies second baseman stole second in the sixth inning.

McNeil remained in the game following a brief visit from the trainers and made a spectacular play to end the seventh, diving to his left to catch Stott’s soft liner and then throwing to first to double off J.T. Realmuto.

MLB announced Friday that the Mets and Phillies will meet next year in London in a series set for June 8-9.

“It’s great for baseball,” Showalter said of the annual series.

The Mets have previously played in Mexico, Japan and Puerto Rico.