The Dodgers are interested in Japanese pitching star Masahiro Tanaka, which should surprise absolutely no one.Tanaka is widely regarded as the best free agent pitcher available this winter, the Dodgers have been scouting him for months -- at least -- and the team has nothing but questions in its rotation beyond a rugged top three of Clayton Kershaw, Zack Greinke and Hyun-Jin Ryu.But is Tanaka, who went an astonishing 24-0 in the regular season and pitches in the Japanese version of the World Series on Saturday, worth a Greinke-sized outlay of cash?