May 21

May 21.10: Who goes first, Manuel or Maine?

Was one of the five pitches John Maine threw last night his final one with the Mets?

That’s what many are thinking, but if Jerry Manuel’s job security was secure, or at least stable, it might be enough for him to outlast Maine, but it is a house of cards.

Maine was the third Mets starter to go down during the team’s dreadful 2-6 road trip, but if the DL is in his immediate future then he’ll get another chance to save his career.

Manuel and pitching coach Dan Warthen think Maine is hiding an injury – the latter called the pitcher a “habitual liar’’ when it comes to discussing his health – and we should know after he sees a doctor today.

“I would like an explanation,’’ Maine said about his removal. “Me throwing 85 mph I don’t think is a good explanation to be taken out.’’

A weak warm-up session and Maine hunched over on the mound might have had something to do with it.

However, Maine partly answered his own question about why he wasn’t allowed to stay in the game.

“I’m in no position, I don’t have enough clout,’’ said Maine. “I don’t have enough star power to say anything. So what happens happens.’’

While Maine’s verbal explosion might doom him with some organizations, what might save him was how this was bungled by Manuel and Warthen.

“I just didn’t think John had enough to compete tonight,’’ Warthen said. “If he’s throwing that way, then there’s got to be something incorrect in that arm. … He wants to go out there and pitch. But we have to be smart enough to realize this guy isn’t right.’’

How come then, if his warm-ups were so bad, weren’t they smart enough to pull the plug before he took the mound?

Warthen told Manuel that Maine wasn’t throwing 80 mph in the bullpen. When Maine bounced a warm-up pitch, Manuel immediately got Raul Valdes up and throwing.

Manuel talked so much about wanting to protect Maine, but he let him start the game anyway? If one pitch could blow out his shoulder, then why take the chance?

Maine said he was never asked how he felt or that he was scheduled to see a doctor today. There’s a protocol in dealing with pitcher’s injuries and it wasn’t followed.

To be sure, Maine didn’t handle things properly, but neither did Manuel or Warthen, and the ice they are skating on is thinner than Maine’s.

Mar 19

March 19.10: Looking at the pen.

Jerry Manuel said if prospect Jenrry Mejia makes the roster coming out of spring training, it won’t be in the set-up role but in low pressure situations.

If that’s the case, then isn’t he better off in the minor leagues pitching in the role the Mets envision for him immediately?

I just see the Mets doing the same yanking around with him they did with Bobby Parnell. Speaking of Parnell, his spot on the roster could be in jeopardy if fifth-starter candidate Hisanori Takahashi makes it as a reliever.

Takahashi will start the March 27 game against Washington. He has worked 8 1/3 scoreless innings in three appearances in competing with Jon Niese and Fernando Nieve for the fifth-starter role. The more I think of Takahashi as a fifth starter, the more I wonder. His numbers are good, but he hasn’t exactly been stretched out this spring and one start won’t do it, thereby making him more suitable for the bullpen.

PEN NOTES: Kiko Calero and Ryota Igarashi are in good shape as far as making the roster. … Pedro Feliciano was hit on the right knee by a grounder and left last night’s game. Feliciano was able to throw warm-ups after the injury and is expected to be fine. … Either Sean Green or Parnell could also be in trouble if the Mets sign left-hander Joe Beimel.

LIKING JACOBS: Manuel likes Mike Jacobs as a back-up first baseman and pinch hitter. The word is he’s been better than expected defensively. Jacobs has two homers this spring.

MANUEL ENDORSES CORA: After last night’s game Manuel endorsed Alex Cora over Ruben Tejada to play shortstop while Jose Reyes is down. That’s not to say Tejada will automatically be ticketed to the minor leagues.