The executive director of the Major League Baseball Players Association is stepping down, amidst an investigation.

The one-time Yankee will depart his leadership post in the wake of federal investigations into the union's finances.

Financial improprieties force MLBPA chief Tony Clark to resign, sending shockwaves through Major League Baseball.

Clark has been the head of the MLBPA since 2013. Prior to that, he spent 15 years in the majors as a first baseman, primarily with the Tigers and the Diamondbacks.