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NEW YORK - Alex Rodriguez has sued Major League Baseball and its players' union, seeking to overturn a season-long suspension.

The suspension was imposed by an arbitrator who ruled there was "clear and convincing evidence" that Rodriguez used three banned substances and twice tried to obstruct the sport's drug investigation.

As part of the lawsuit filed Monday in federal court in Manhattan, Rodriguez made public the 33-page decision by arbitrator Fredric Horowitz.

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