The Diamondbacks consider Masahiro Tanaka to be their "No. 1 target" and are serious suitors for the Japanese ace, FOX Sports' Ken Rosenthal reports. Had Arizona not acquired Mark Trumbo, the Snakes were open to spending the $140MM that agent Scott Boras said it would've taken to sign Shin-Soo Choo, and Rosenthal notes that D'Backs management could instead invest that money (the $20MM posting fee and a $120MM contract) towards landing Tanaka. The D'Backs could have an extra source for information on Tanaka in the form of scout Rick Short, who played with Tanaka from 2007-09 on the Rakuten Golden...

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