Former Mets hurler Max Scherzer had an outing he’ll want to forget against one of his ex-teammates. 

Now with the Rangers, Scherzer was lit up on Wednesday during a crucial meeting with the Astros and Justin Verlander as he yielded a season-worst seven runs on six hits, which included three home runs, as Houston rolled to a 12-3 win.

Among the three homers that Scherzer surrendered was a grand slam to Jose Abreu, which put the Astros up 7-1 in the top of the third before the Astros pulled away with a three-game sweep. 

After the game, Scherzer told reporters that he was dealing with “an ailment,” that affected him on the mound.

“I couldn’t get all the way through the ball, couldn’t explode through the ball,” Scherzer said. “I can go out there and compete. I went out there against Minnesota last time kind of with a similar issue and was able to compete and locate. … Today, just didn’t get it done and didn’t locate the ball well enough.”

The righty was facing Verlander — whom Scherzer played with in Detroit and in the Big Apple — for the first time in his career. 

Before Wednesday night, Scherzer had allowed just two home runs in his six starts since he was shipped to Texas by the Mets for Luisangel Acuna in the days before the trade deadline.

Entering the game, he had a 2.21 ERA and allowed 19 hits in 36 ⅔ innings with Texas. 

Wednesday’s start matched Scherzer’s shortest of the year, with the other three-inning outing coming on April 19 when he was ejected — and eventually suspended — for a sticky substance.

Verlander said after the proceedings that he was surprised by the offensive firepower against Scherzer.

“Going against Max, obviously, you think is probably going to be a tight one,” Verlander said. “Was pleasantly surprised and pleased to get some runs early and was able to kind of settle in after Semien’s leadoff homer and just go to work.”

The matchup had plenty of intrigue going into the game, with the Rangers needing a win to avoid a sweep by the Astros. 

The Rangers came in a half-game back of a playoff spot, where they stayed despite the thumping.

“Obviously, it was not a good series, wasn’t a lot we did well,” Rangers manager Bruce Bochy said. “We just didn’t execute pitches, left a lot up throughout the series and we paid for it.

Before the meeting, Scherzer expressed excitement about getting to face his former teammate. 

“That’ll be fun,” Scherzer told reporters, according to ESPN. “First time facing him. My whole career, I’ve got to face all the best guys in the world and I’ve got to play with all the best guys in the world. So I got to play with [Verlander] for a while.

“Now it’s going to be fun to actually go up against him.”

The two had a contentious relationship while they played with one another in Detroit, but the reunion in Queens appeared to help mend fences, though The Post’s Mike Puma reported in August that the two had occasional discord when Verlander acted like a “diva.”

Both were dealt by New York around the deadline as the organization retooled its farm system and punted on the rest of 2023.

During Wednesday’s game, the two aces were each making $677,083, according to The Action Network’s Darren Rovell.

The Mets were on the hook to pay 32 percent of Scherzer’s paycheck and 60 percent of Verlander’s.

Acuna, the player the Amazin’s landed in the Scherzer trade, blasted his first two homers in the Mets organization on Wednesday night.

It was the first multi-homer game of his pro career.

— With AP