Ira,I'm sure these guys are in on the joke,...Klap is on a roll this week ,isn't he? ]By BOB KLAPISCH RECORD COLUMNIST KISSIMMEE, Fla. � His delivery is so simple and pure, as unaffected as the man himself. Even now, just 10 wins shy of 300, there's nothing about Tom Glavine that suggests he's on his way to the Hall of Fame � not his ego (surprisingly ordinary), his fastball (less than that) or even his physique (closer to a blogger's than an athlete's). But something happens to Glavine the moment he steps on the mound. Just ask the Astros, who were held scoreless over three innings Tuesday, learning for the one millionth time that squaring up on Glavine's change-up is like trying to catch a dollar bill from a helicopter. You can say Mariano Rivera's cutter is the single greatest pitching phenomenon of our generation, but Glavine's ability to control hitters' bat speed is a close second. In some ways, the Met lefty is pulling off an even greater miracle than Rivera's, given that he's older and has no velocity to speak of. Whether he admits it or even wants it, Glavine has become the Mets' captain, as steadying as Pedro Martinez was electric. It's irrelevant whether Willie Randolph officially anoints Glavine; it's all about how the Mets react to him and how they're a better team when he pitches. Glavine was at Osceola County Stadium, working the formula that'll help the Mets forget about Pedro, at least for now. Fastballs and sliders in, the soft change-up floating down and away to Houston's right-handed hitters. Glavine did it to Morgan Ensberg, striking him out in the first inning, doing likewise to Adam Everett in the second. Both times, the change-up did its magic at the last moment, dropping just below the hitting zone after Ensberg and Everett had begun their swings. So what is it that keeps Glavine so ageless? It's partly his innate skill. Throwing a change-up with precisely the same arm speed as a fastball is something that can't be taught; you either have a loose, whip-like arm or you don't. But Glavine's career has been equally bolstered by his low-anxiety approach to the game. Glavine never, ever exudes fear, although his wall of calm will be tested this summer, now that Pedro is gone. Is Glavine tough enough to carry the Mets through the 2007 season? Better question: does he have any choice? Besides Glavine, the Mets are counting on a 40-something pitcher who's already in pain (Orlando Hernandez, arthritic neck), a No. 3 starter who's totaled just eight wins in the majors (John Maine), a No. 4 starter who ranked 286th in the National League in ERA last year (Oliver Perez) and a No. 5 starter, Chan Ho Park, who'll be a Met only until Mike Pelfrey or Philip Humber is ready for prime time. To say the Mets need Glavine to keep throwing that perfect change-up is like saying they need Jose Reyes to keep stealing bases. But it's one thing to live comfortably as a No. 2 starter, protected by the likes of Pedro or John Smoltz or Greg Maddux. Suddenly, Glavine is alone at the front of the Mets' rotation, where everything he does and says will be scrutinized. "Believe me, I want nothing more than guys looking forward to the day I'm pitching because they know I'm going to pitch deep into the game and we're going to win," Glavine said after the game. "That's the feeling you're always trying to establish with your teammates. We'll see how it goes." That can't-miss feeling is what Pedro gave the Mets for the first 1� seasons he was healthy. Whether he ever regains it remains to be seen. Now, other than Glavine, there's no one who can make the Mets feel bulletproof. It's a lot to ask of a soft tosser beginning his 21st year in the majors. But Glavine has never worried that the National League might crack the code on his change-up, even when it seems they're so close to doing so. Glavine isn't perfect, of course. He left a third-inning change-up over the middle of the plate to left fielder Hunter Pence, who promptly nuked a line drive to the wall in left-center. Pence turned into a blur around the bases and cruised to a triple. Glavine, who'd been backing up the play behind third, suddenly looked his age as he trudged back to the mound -- every last second of those 40 years. And his vulnerability extended to the at-bat with Lance Berkman, who drew a walk on four pitches. But here is where Glavine transformed. He took a deep breath, the kind that stretched the lining of his lungs and busted a fastball in on Carlos Lee. The Astros' $100 million slugger had been waiting for that change-up, and found himself unable to catch up to a heater that couldn't have been faster than 86-mph. Lee swung -- late -- and watched in disgust as a benign pop-up landed in first baseman Mike Carp's glove. Lee lowered his head, marching back to the dugout in defeat. Glavine? He walked off the mound, proving that nothing is impossible, even in the most meaningless spring training moments. Once again, Glavine had won the war with time. How many pitchers can say that? E-mail: klapisch@northjersey.com