If it were up to MLB Commissioner Rob Manfred, Joe Girardi might not be able to call on his fearsome trio of Dellin Betances, Andrew Miller and Aroldis Chapman whenever he wanted to.

Manfred said during a radio interview Thursday he was “in favor” of limiting the number of relief pitchers a team could use in an inning or a game in an attempt to improve the pace of play.

Not surprisingly, Girardi, who has one of the best back ends of a bullpen in history at his disposal, didn’t like that possibility.

“We’re gonna change the way you play the game and the way you try to win games?” Girardi said after the Yankees lost to the Orioles, 4-1, in The Bronx. “I think that’s completely too drastic.”

Then, the manager added, sarcastically: “If you want to shorten the game, make it seven innings.”

But Manfred, during an interview on ESPN Radio, said the relief pitcher limit was something that had been seriously discussed.

“We’ve [MLB] spent a ton of time on this issue in the last few months,” Manfred said.

“You know the problem with relief pitchers is that they’re so good. I’ve got nothing against relief pitchers, but they do two things to the game: The pitching changes themselves slow the game down and our relief pitchers have become so dominant at the back end that they actually rob action out of the end of the game, the last few innings of the game. So relief pitchers is a topic that is under active consideration. We’re talking about that a lot internally.”

Mark Teixeira understood the dilemma the sport is facing, saying: “Anything you can do to shorten the game, I’m for it.”

But the first baseman made it clear he did not support the bullpen idea and was merely referring to figuring out a way to make games take less time without interfering with the structure of the sport.

“Games are too long,” Teixeira said. “I think that’s why kids don’t watch baseball anymore. Fans aren’t as excited about watching 3 ½-hour games as 2 ¹/₂ hours.”