Orza, 64, will officially step down on March 31, 2011, the association said in a news release.
Orza joined the union in 1984 as associate general counsel and helped negotiate agreements between the players and Major League Baseball since 1985. Eight years ago, he was involved in a drug-testing compromise that ended an almost 20-year impasse on the random testing of players.
“Each day since Don Fehr’s resignation has only served to reaffirm just how fortunate the players are to have a person like Michael to succeed him,” Orza said in a statement. “Seeing the enormously talented people he’s been able to bring on board -- well, it’s simply time for the old to make way for the new.”
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