FORMER MET ENJOYING GREEN-ER PASTURES  —  Shawn Green anticipated that it would happen.  Now it's a done deal.  —  The right fielder, who played with the Mets for the last year and a half and spent parts of 15 seasons in the majors, told The Post yesterday that he has retired.

Notes: Schneider learns from teammates  —  Beltran takes new catcher under his wing in training camp  —  LAKELAND, Fla. — Brian Schneider, who along with most Mets regulars didn't make the trip to Lakeland, used the more relaxed atmosphere back at Tradition Field to seek out some friendly hitting advice.

Corpas locked, loaded Rockie  —  Colorado and the closer have agreed on a historic deal that could be worth $22 million.  —  TUCSON — Manny Corpas' knack for perfect endings has created the beginning of a long-term relationship with the Rockies.  The Rockies agreed in principle Wednesday …

MLB might punish Mets over thin traveling squad … The Mets could be in hot water with the commissioner's office over the traveling squad they took to Lakeland for their spring-training opener Wednesday.  —  Just the day before, MLB's executive vice president for baseball operations …

How Players View Drug Testing  —  Yesterday, AJC Braves beat writer David O'Brien featured an interview with Chipper Jones and Tom Glavine about blood testing for human growth hormone in baseball.  I don't want to get sidetracked by the fact that it would be a total waste of resources to test for HGH …

Zumaya pleased by progress  —  Tigers reliever ahead of schedule after October surgery  —  LAKELAND, Fla. — Joel Zumaya came to camp on Tuesday expecting another day in the weight room.  He ended up throwing a baseball for the first time in almost five months.

DeRosa to undergo heart procedure today; expected back soon  —  MESA, Ariz. — Cubs second baseman Mark DeRosa is scheduled to undergo surgery this morning to correct the heart arrhythmia that sent him to a Mesa hospital over the weekend.  And barring a setback, the club expects he'll be ready …

Say No to Johan  —  WHY RED SOX AND YANKEE FANS ARE HAPPY THEY WON'T BE ROOTING FOR THE BEST PITCHER IN BASEBALL.  —  You'd think Yankee and Red Sox fans would be upset about losing Johan Santana to the Mets.  After all, he's the best pitcher in the known universe—and left-handed!

Milledge rips Mets again  —  LAKELAND, Fla. - From high-fiving fans, to showboating after meaningless home runs, to arriving late at the ballpark more than a few times, Lastings Milledge certainly stirred things up during his brief stay with the Mets.  —  And while he's with the Nationals now …

Reyes determined to stay focused  —  All-Star shortstop ready to put September slump in the past  —  PORT ST. LUCIE, Fla. — Bounding through a packed Tradition Field clubhouse late last week, Jose Reyes was brimming with energy.  Typical.  So he whisked a television microphone away …

What a switch: fan Batista meets his idol Kenny G  —  PEORIA, Ariz. — His entire winter had been spent front and center on some kind of stage.  —  Miguel Batista hopped around the United States, Ecuador, Panama and his native Dominican Republic, opening baseball parks …

How cold was it?  —  FORT MYERS - For Terry Francona and David Ortiz, the coolest part - make that the coldest - part of yesterday's Red Sox visit to Washington came on the road.  —  “I froze my (expletive deleted) (body parts) off,” said Ortiz of his ride in the sidecar of the lead motorcycle escort …

Cards cut Spiezio over DUI case  —  JUPITER, FLA. — The Cardinals abruptly released utility infielder Scott Spiezio on Wednesday afternoon, after learning that a California court had issued a warrant for his arrest on six misdemeanor counts ranging from aggravated assault to driving under the influence.