This was announced by Mariners on the 27th. Iwakuma was unable to return to the major league matches after entering the list of disabled people with inflammation of the right shoulder in May this season, the sixth year of the major league, and in September the surgery to remove the damaged tissue of the right shoulder I received. Results went up to six games, 0 wins and 2 losses, with a protection rate of 4.35, finishing the season without victory for the first time in the major league, after that, it was a free contract from the mariners.

Iwakuma pitcher again will join Mariners as a minor contract next season and will participate in the camp from February next year as an invited player. After surgery, he continues rehabilitation, and the Mariners is expecting to be able to resume the pitch in the camp.

Iwakuma is a 36-year-old, with 63 wins and 39 losses in six seasons in Mariners, with a score of 3.42.