| Name JPN | Name ENG | Notes | Official |
|---|---|---|---|
| 大累進む | Susumu Orui | [10/30] Orui could retire and take a job in the Fighters organization. Daily Sports 10/30/2018, Sports Hochi 10/30/2018, Sponichi 10/30/2018, Nikkan Sports 10/30/2018 | 10/30 |
| 森本龍弥 | Tatsuya Morimoto | [11/20] The Fighters announced that they signed Morimoto to an Ikusei contract. He was assigned the uniform number 124. Nikkan Sports 11/20/2018, Daily Sports 11/20/2018 … [10/30] Morimoto could remain with an Ikusei contract. Daily Sports 10/30/2018, Sports Hochi 10/30/2018, Sponichi 10/30/2018, Nikkan Sports 10/30/2018 | 11/20 10/30 |
| 新垣勇人 | Hayato Arakaki | [12/13] Arakaki will retire and become a pitching coach for the Industrial League’s Toshiba (a team he played for before he was drafted). Toshiba 12/13/2018, Sports Hochi 12/13/2018, Nikkan Sports 12/13/2018 … [10/30] Arakaki is not ready to retire. Daily Sports 10/30/2018, Sports Hochi 10/30/2018, Sponichi 10/30/2018, Nikkan Sports 10/30/2018 | 10/30 |
| 高良一輝 | Kazuki Takara | [10/05] Thinking about attending NPB tryout. Sports Hochi 10/5/2018, Nikkan Sports 10/5/2018, Sponichi 10/5/2018 | 10/5 |
| 大嶋匠 | Takumi Oshima | [10/05] Recovering from right knee injury suffered in August. Planning to retire. Sports Hochi 10/5/2018, Daily Sports 10/5/2018, Nikkan Sports 10/5/2018, Sponichi 10/5/2018 | 10/5 |