I will remember it as if I saw it yesterday for the first time.

A sheet of notebook paper, with the words, “Know your place, rook … signed, your teammates,’’ was taped over Lastings Milledge’s locker in the Mets’ clubhouse in old RFK Stadium. This, in the late summer in 2006.

MILLEDGE: Once he burned bright.

The Mets were en route to the playoffs and a veteran laden team was rubbed the wrong way by Milledge’s brashness and arrogance. Then-manager Willie Randolph – who reprimanded Milledge several times that summer – ripped down the sign, but knew he hadn’t ripped away the problem.

The Mets labeled it a misunderstanding, and Randolph called Milledge “a good kid,’’ but this clearly was not a misunderstanding with a teammate. It was the accumulation of several incidents that rankled several teammates.

Milledge burst upon the Mets, hitting over .300, was dazzling on the bases and showed a strong arm. He was going to be the next “fill in the blank.’’ Willie Mays? Roberto Clemente?

However, things quickly cooled after his first career homer, when on his way to the outfield he high-fived fans down the right field line in Shea Stadium. Randolph sensed how the Giants seethed in their dugout, especially since he saw some of his own players do the same.

Randolph reprimanded Milledge on the unwritten laws in baseball, but it didn’t take. There were ground balls he didn’t run out and times he didn’t hustle in the outfield. He was flash with the jewelry swinging wildly on the field, but in the clubhouse he often sat buried in his locker wearing headphones or playing a video game.

He came off as sullen and angry and clearly couldn’t be bothered by getting to know his teammates. Or, a baseball legend for that matter. During spring training then-GM Omar Minaya brought Milledge to the Nationals dugout to meet Frank Robinson, but Milledge was came off as being in-different.

Finally, he arrived in the clubhouse in Philadelphia an hour before a day game. Although it was early, the veterans made it in on time. David Wright had enough when Milledge strolled in with sunglasses and an iPod as if he owned the place and told him this wasn’t acceptable.

Wright wouldn’t belabor the issue Opening Day, only managing to say “seniority is big in this game,’’ which is the politically-correct translation for Milledge hadn’t earned his stripes.

Milledge popped into my consciousness today when I learned it was his 28^th birthday, an age when he should be in the prime of his career. Instead, Milledge is one of hundreds of baseball prospects given the label of “can’t miss, but eventually did.’’

Seven years ago – the career lifetime of a select few – the Mets had three prized outfield prospects in Milledge, Carlos Gomez and Francisco Martinez. One by one they arrived, fizzled to the point of exasperation and were traded. Not one of them hustled like journeyman outfielder Collin Cowgill.

After turning down several proposals for Manny Ramirez, the Mets eventually traded Milledge to Washington as part of a trade that brought Ryan Church – he of the concussion fiasco – and catcher Brian Schneider. Milledge had his coffee to go with Washington, then Pittsburgh and finally the White Sox before heading to Japan. Milledge had his head-scratching moments in each place, but basically stopped hitting.

At 28, Milledge is still young. It’s about discipline in Japan and if Milledge comes back with a changed attitude perhaps he’ll get another chance. It’s a long way to Japan, and perhaps an even longer route back to the major leagues.

ON DECK: The 73 Series continues with “Ya Gotta Believe” slogan