Masahiro Tanaka (田中 将大, Tanaka Masahiro, born November 1, 1988) is a Japanese professional baseball player for the Tohoku Rakuten Golden Eagles of the Nippon Professional Baseball (NPB). From 2007 through 2013, he played for the Eagles in NPB. Tanaka was posted by the Eagles after the 2013 season to be signed with the New York Yankees in Major League Baseball (MLB) and signed a seven-year, $155 million contract, the fifth-largest deal ever given to a pitcher at the time. He made his major league debut in 2014 and played for the Yankees through the 2020 season, before deciding to return to Japan.