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松坂 大輔 (Matsuzaka Daisuke) is a Japanese professional baseball pitcher who played in Major League Baseball (MLB) and Nippon Professional Baseball (NPB). He is widely regarded as one of the greatest Japanese pitchers of all time. Matsuzaka's full name in Japanese is written using kanji characters, with 松坂 (Matsuzaka) being his family name and 大輔 (Daisuke) being his given name.