Don Fehr is stepping down as executive director of the Major League Baseball Players Association, a position he's held since the mid-1980s, a source tells ESPN.

Fehr will be replaced by general counsel Michael Weiner, pending board approval, the source said. An announcement is expected to be made later on Monday afternoon.

Fehr, who will turn 61 in July, was voted in to lead the players' union in December 1985.

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