(New York, NY)  --  Alex Rodriguez says he is through with his arbitration hearing.  The New York Yankees third baseman walked out of today's session, upset that the arbitrator didn't force Major League Baseball Commissioner Bud Selig to testify.  "A-Rod" issued a statement saying he is done participating, calling it a farce and saying the absurdity and injustice just became too much.  Rodriguez is appealing a 211-game suspension for his alleged performance-enhancing drug ties to the Biogenesis anti-aging clinic in South Florida.