Yanks celebrate the career of Mariano Rivera

9/22/13: The Yankees honor Mariano Rivera with a special ceremony prior to their game against the Giants Check out for more! About : About : Baseball Commissioner Allan H. (Bud) Selig announced on January 19, 2000, that the 30 Major League Club owners voted unanimously to centralize all of Baseball’s Internet operations into an independent technology company. Major League Baseball Advanced Media (MLBAM) was formed and charged with developing, building and man