In the Japanese publication, Sponichi Annex, a report came out indicating the Mariners were pursuing 35-year-old relief pitcher Yoshihisa Hirano. The article, which you can see by clicking here, doesn’t translate easily but does seem to indicate the Mariners are leaders for the services of Mr. Hirano.
Hirano, who spent 11 seasons pitching for the Orix Buffaloes of the NPL, spent his first 2 seasons stateside with the Arizona Diamondbacks and produced respectable numbers in his first go around. As a “rookie” in 2018, Hirano posted a 2.44 ERA, a 1.09 WHIP, and 59 strikeouts in 66.