Hall of Fame Class of 2019 is introduced

The Hall of Fame Class of 2019 is introduced at a full news conference, featuring Edgar Martinez, Mariano Rivera and Mike Mussina About Major League Baseball: Major League Baseball (MLB) is the most historic professional sports league in the United States and consists of 30 member clubs in the U.S. and Canada, representing the highest level of professional baseball. Led by Commissioner Robert D. Manfred, Jr., MLB currently features record levels of labor peace, competitive balance and industry revenues, a