| 01/01/1963 | OSA scouting updated ratings: Stuff: 2; Movement: 2; Control: 1. |
| 01/01/1963 | OSA scouting updated ratings: Stuff: 2; Movement: 2; Control: 1. |
| 01/01/1964 | OSA scouting updated ratings: Stuff: 1; Movement: 3; Control: 1. |
| 06/05/1964 | Drafted in the 1964 first-year player draft by the Yokohama Kingfishers. (Round 2, Pick 12, 24th overall pick). |
| 06/06/1964 | Released by the Yokohama Kingfishers. |
| 06/15/1964 | Signed a minor league contract with majors option with the Sapporo Bears organization. |
| 07/16/1964 | Named the #16 prospect in the BAN |
| 10/12/1964 | Named the #19 prospect in the BAN |
| 05/01/1965 | Named the #24 prospect in the BAN |
| 05/31/1965 | Did not elect for free agency and will remain in the Sapporo organization. |
| 07/16/1965 | Named the #37 prospect in the BAN |
| 05/01/1966 | Named the #34 prospect in the BAN |
| 07/16/1966 | Named the #33 prospect in the BAN |
| 03/22/1967 | Successfully completed training to increase his endurance on the mound at the Sapporo Bears development complex. |
| 05/01/1967 | Named the #27 prospect in the BAN |
| 06/02/1968 | Injured (sinusitis),day-to-day for 3 days. |
| 06/14/1968 | Released by the Sapporo Bears. |
| 11/20/1968 | Signed a 1-year contract worth a total of $23,400 with the Sapporo Bears organization. |
| 07/20/1969 | Released by the Sapporo Bears. |
| 06/30/1970 | Signed a 1-year contract worth a total of $18,400 with the Sapporo Bears organization. |
| 07/31/1972 | Was selected to the 1972 Baseball Association of Nippon All-Star Game. |
| 07/05/1973 | Injured (strained oblique),day-to-day for 2 weeks. |
| LEADERBOARD APPEARANCES |
| | | | Year | W | Rank | | 1971 | 11 | 7 | | 1973 | 12 | 9 | | | Year | L | Rank | | 1971 | 11 | 9 | | 1973 | 11 | 7 | | 1974 | 12 | 5 | | | Year | Win. % | Rank | | 1971 | .500 | 9 | | 1972 | .733 | 1 | |
| | | Year | BB | Rank | | 1971 | 95 | 4 | | 1972 | 110 | 10 | | 1973 | 105 | 2 | | 1974 | 96 | 3 | | | Year | ERA | Rank | | 1972 | 3.11 | 1 | | | Year | BABIP | Rank | | 1972 | .237 | 6 | | 1973 | .251 | 7 | | 1974 | .242 | 4 | | | Year | HR/9 | Rank | | 1971 | 0.61 | 2 | | 1972 | 0.59 | 2 | | 1973 | 0.91 | 8 | |
| Year | H/9 | Rank | | 1972 | 6.80 | 3 | | 1973 | 8.00 | 8 | | 1974 | 8.01 | 10 | | | | Year | QSP | Rank | | 1972 | .760 | 1 | | | Year | GB% | Rank | | 1971 | 0.61 | 1 | | |