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Tanaka set his NPB record for most consecutive winning decisions in the 2012 season. He won his first 24 decisions that season, which set a new record for most consecutive winning decisions in Japanese baseball. Tanaka's streak ended on July 28, 2012, when he lost to the Yomiuri Giants. Tanaka's streak is the longest in NPB history, and it is one of the most impressive streaks in baseball history.