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This paper is to introduce a benchmarking process for the management of batting performance of baseball players by evaluating the technical efficiency in batting performance of baseball players and super-efficiency and by estimating similarity among players. The results show that there exists a substantial opportunity for improvement and the heterogeneity in technical efficiency in batting between players. Super-efficiency allows for ranking efficient players as well as inefficient players. Similarity together with super-efficiency identifies 6 benchmark players whom inefficient players target for improvement. Moreover, the salary for players is not consistent with the batting performance of players.