Wagner, officially a Met, questions Phillies' desire to win.(Billy Wagner)

Byline: Jim Salisbury

NEW YORK _ On his first day as New York Mets closer, Billy Wagner came out throwing heat at his old team.

He trashed the Phillies' commitment to winning, wondered about their plan for this season, and said he'd likely still be with the club if it had been willing to give him a three-year, $24 million contract in July.

Instead, he officially became a Met Tuesday, signing a four-year, $43 million contract that, according to agent Bean Stringfellow, easily topped the Phillies' best offer.

"The Mets are trying to win a World Series," Wagner said at Shea Stadium. "I felt like this was the right place to be."

And about the team 100 miles down the road?

"There's a difference between winning and being competitive," Wagner said. "In the …