Mariners sign Hisashi Iwakuma to one-year, $1.5M contract

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From ESPN’s Jerry Crasnick comes word that the Mariners have signed Japanese right-hander Hisashi Iwakuma to a one-year, $1.5 million major league contract. The agreement also carries another $3.4 million in performance-based incentives.

Iwakuma, 30, registered a superb 2.42 ERA and 90/19 K/BB ratio in 119 innings last season for the Tohoku Rakuten Golden Eagles of Nippon Professional Baseball. He posted a 2.82 ERA and 153/36 K/BB ratio across 201 innings in 2010.

The A’s tried to sign Iwakuma last offseason, offering up a $19 million posting fee for exclusive negotiating rights, but the two sides ultimately failed to work out a major league contract. If everything goes well in spring training with the Mariners, the 6-foot-3 native of Tokyo should grab a spot at the back end of the Seattle starting rotation.