Throughout Hisashi Iwakuma's free agency, the Seattle Mariners remained in contact and the team as quick to react when the pitcher unexpectedly became available again. Iawkuma was back in Seattle on Friday after agreeing to stay with the Mariners for a deal that guarantees $12 million and would be worth $47.5 million over three years if he pitches 190 innings per season. It was like a big wave going up and down,'' Iwakuma said through an interpreter.