| 06/05/1968 | Drafted in the 1968 first-year player draft by the Nagasaki Stars. (Round 1, Pick 9, 9th overall pick). |
| 03/21/1969 | Unsuccessfully completed training to improve his pitch control at the Nagasaki Stars development complex. |
| 05/01/1969 | Named the #1 prospect in the BAN |
| 05/01/1970 | Named the #1 prospect in the BAN |
| 07/16/1970 | Named the #5 prospect in the BAN |
| 05/01/1971 | Named the #3 prospect in the BAN |
| 05/01/1971 | Outstandingly completed training to increase his endurance on the mound at the Nagasaki Stars development complex. |
| 07/16/1971 | Named the #3 prospect in the BAN |
| 05/01/1972 | Named the #4 prospect in the BAN |
| 05/01/1973 | Named the #7 prospect in the BAN |
| 05/01/1974 | Named the #20 prospect in the BAN |
| 05/01/1974 | Successfully completed training to improve his secondary pitch at the Nagasaki Stars development complex. |