| 06/05/1957 | Drafted in the 1957 first-year player draft by the Vesutan Bees. (Round 4, Pick 8, 44th overall pick). |
| 06/06/1957 | Released by the Vesutan Bees. |
| 06/10/1957 | Signed a 1-year minor league contract with the Vesutan Bees organization. |
| 06/11/1957 | Released by the Vesutan Bees. |
| 06/15/1957 | Signed a 1-year minor league contract with the Sapporo Bears organization. |
| 06/15/1957 | Released by the Sapporo Bears. |
| 06/19/1957 | Signed a minor league contract with majors option with the Vesutan Bees organization. |
| 06/19/1957 | Released by the Vesutan Bees. |
| 06/21/1957 | Signed a 1-year minor league contract with the Yokohama Kingfishers organization. |
| 06/22/1957 | Released by the Yokohama Kingfishers. |
| 06/23/1957 | Signed a 1-year minor league contract with the Osaka Sailors organization. |
| 06/24/1957 | Released by the Osaka Sailors. |
| 06/26/1957 | Signed a 1-year minor league contract with the Nagasaki Stars organization. |
| 06/26/1957 | Released by the Nagasaki Stars. |
| 06/30/1957 | Signed a 1-year minor league contract with the Denki Dynamics organization. |
| 06/30/1957 | Released by the Denki Dynamics. |
| 07/04/1957 | Signed a 1-year minor league contract with the Rakisuta Rams organization. |
| 07/04/1957 | Released by the Rakisuta Rams. |
| 07/09/1957 | Signed a 1-year minor league contract with the Yokohama Kingfishers organization. |
| 07/09/1957 | Released by the Yokohama Kingfishers. |
| 07/10/1957 | Signed a 1-year minor league contract with the Nagasaki Stars organization. |
| 07/10/1957 | Released by the Nagasaki Stars. |
| 07/11/1957 | Signed a 1-year minor league contract with the Denki Dynamics organization. |
| 07/11/1957 | Released by the Denki Dynamics. |
| 07/13/1957 | Signed a 1-year minor league contract with the Osaka Sailors organization. |
| 07/13/1957 | Released by the Osaka Sailors. |
| 07/14/1957 | Signed a 1-year minor league contract with the Yokohama Kingfishers organization. |
| 07/14/1957 | Released by the Yokohama Kingfishers. |
| 07/15/1957 | Signed a 1-year minor league contract with the Rakisuta Rams organization. |
| 07/16/1957 | Named the #92 prospect in the BAN |
| 10/12/1957 | Named the #84 prospect in the BAN |
| 11/05/1957 | Released by the Rakisuta Rams. |
| 11/11/1957 | Signed a 1-year minor league contract with the Rakisuta Rams organization. |
| 05/01/1958 | Named the #62 prospect in the BAN |
| 07/16/1958 | Named the #63 prospect in the BAN |
| 04/23/1959 | Successfully completed training to improve his secondary pitch at the Rakisuta Rams development complex. |
| 05/01/1959 | Named the #70 prospect in the BAN |
| 07/16/1959 | Named the #65 prospect in the BAN |
| 05/01/1960 | Named the #35 prospect in the BAN |
| 07/16/1960 | Named the #41 prospect in the BAN |
| 05/01/1961 | Named the #26 prospect in the BAN |
| 09/01/1961 | Wins the BAN EL Rookie of the Month Award. |
| 03/23/1962 | Unsuccessfully completed training to make one of his poorer pitches more usable at the Rakisuta Rams development complex. |
| 09/24/1962 | Pitches a 2-hit shutout against the Sapporo Bears with 3 strikeouts and 4 BB allowed! |
| 01/01/1963 | OSA scouting updated ratings: Stuff: 3; Movement: 3; Control: 3. |
| 01/01/1963 | OSA scouting updated ratings: Stuff: 3; Movement: 3; Control: 3. |
| 03/23/1963 | Successfully completed training to add a pitch to his arsenal at the Rakisuta Rams development complex. |
| 09/16/1963 | Pitches a 2-hit shutout against the Hosho Reliables with 4 strikeouts and 4 BB allowed! |
| 10/14/1963 | Was traded by the Rakisuta Rams to the Sapporo Bears, along with SS Shikato Murata, in exchange for C Shinichi Takahashi and RP Kento Okada. |
| 01/01/1964 | OSA scouting updated ratings: Stuff: 3; Movement: 2; Control: 3. |
| 07/31/1964 | Was selected to the 1964 Baseball Association of Nippon All-Star Game. |
| 03/22/1966 | Unsuccessfully completed training to make one of his poorer pitches more usable at the Sapporo Bears development complex. |
| 09/03/1967 | Pitches a 5-hit shutout against the Rakisuta Rams with 2 strikeouts and 3 BB allowed! |
| 09/14/1968 | Pitches a 3-hit shutout against the Denki Dynamics with 8 strikeouts and 2 BB allowed! |
| 10/06/1968 | Injured (flu),day-to-day for 4 days. |
| 03/21/1969 | Unsuccessfully completed training to improve his secondary pitch at the Sapporo Bears development complex. |
| 08/16/1969 | Pitches a 2-hit shutout against the Denki Dynamics with 2 strikeouts and 2 BB allowed! |
| 08/18/1969 | Wins the BAN EL Player of the Week Award. |
| 05/23/1970 | Pitches a NO-HITTER against the Rakisuta Rams with 7 strikeouts and 2 BB allowed! |
| 07/18/1970 | Injured (hamstring strain),out for 2-3 months. |
| 07/17/1972 | Injured (tender elbow),day-to-day for 1-2 weeks. |
| 07/25/1972 | Suffered setback in recovery from injury, will miss another one week. |
| 07/29/1972 | Suffered setback in recovery from injury, will miss another one week. |
| 05/19/1973 | Injured (forearm soreness),day-to-day for one week. |
| 09/02/1973 | Injured (forearm soreness),day-to-day for one week. |
| 09/06/1973 | Suffered setback in recovery from injury, will miss another one week. |
| LEADERBOARD APPEARANCES |
| Year | SH | Rank | | 1963 | 10 | 9 | | 1966 | 10 | 4 | | 1968 | 9 | 4 | | 1971 | 12 | 10 | | 1973 | 11 | 8 | | | Year | G | Rank | | 1962 | 43 | 8 | | 1964 | 44 | 9 | | | Year | GS | Rank | | 1963 | 29 | 5 | | 1967 | 30 | 4 | | 1968 | 30 | 4 | | 1969 | 30 | 2 | | 1971 | 29 | 10 | | | Year | W | Rank | | 1967 | 11 | 5 | | 1968 | 13 | 4 | | | Year | L | Rank | | 1963 | 11 | 7 | | 1966 | 14 | 3 | | 1971 | 13 | 1 | | 1973 | 12 | 5 | | 1974 | 11 | 9 | |
| Year | Win. % | Rank | | 1967 | .579 | 7 | | 1968 | .565 | 6 | | | Year | SV | Rank | | 1961 | 7 | 8 | | 1962 | 8 | 8 | | | Year | HLD | Rank | | 1962 | 3 | 4 | | 1964 | 4 | 5 | | 1972 | 10 | 1 | | | Year | IP | Rank | | 1963 | 211.2 | 3 | | 1966 | 193.2 | 10 | | 1967 | 207.2 | 6 | | 1968 | 209.2 | 6 | | 1969 | 200.1 | 6 | | | Year | BF | Rank | | 1963 | 870 | 3 | | 1966 | 804 | 9 | | 1967 | 855 | 5 | | 1968 | 866 | 6 | | 1969 | 843 | 4 | | 1971 | 807 | 10 | |
| Year | HRA | Rank | | 1962 | 26 | 2 | | 1963 | 18 | 9 | | 1965 | 17 | 6 | | 1966 | 20 | 3 | | 1967 | 17 | 9 | | 1968 | 29 | 1 | | 1969 | 29 | 1 | | 1971 | 32 | 3 | | 1974 | 33 | 4 | | | Year | BB | Rank | | 1966 | 67 | 8 | | 1967 | 68 | 10 | | 1968 | 68 | 9 | | 1969 | 74 | 7 | | 1971 | 84 | 7 | | 1973 | 90 | 3 | | 1974 | 87 | 9 | | | Year | K | Rank | | 1963 | 152 | 7 | | 1966 | 118 | 9 | | 1967 | 122 | 9 | | 1968 | 153 | 1 | | 1969 | 133 | 3 | | 1971 | 182 | 8 | | | Year | WP | Rank | | 1966 | 9 | 2 | | 1968 | 7 | 7 | | 1973 | 7 | 6 | | | Year | ERA | Rank | | 1967 | 2.64 | 5 | |
| Year | BABIP | Rank | | 1963 | .255 | 8 | | 1966 | .241 | 5 | | 1969 | .237 | 6 | | 1974 | .237 | 1 | | | Year | WHIP | Rank | | 1963 | 1.09 | 5 | | 1967 | 1.17 | 9 | | | Year | K/BB | Rank | | 1963 | 3.04 | 4 | | 1965 | 2.38 | 10 | | 1968 | 2.25 | 6 | | 1969 | 1.80 | 9 | | | Year | RA/9 | Rank | | 1963 | 10.03 | 5 | | 1967 | 10.70 | 9 | | 1968 | 10.65 | 10 | | | Year | H/9 | Rank | | 1967 | 7.58 | 10 | | 1969 | 7.50 | 10 | | 1971 | 8.29 | 9 | | 1974 | 7.71 | 5 | |
| Year | BB/9 | Rank | | 1963 | 2.13 | 3 | | 1965 | 2.30 | 8 | | | Year | K/9 | Rank | | 1962 | 6.68 | 8 | | 1966 | 5.48 | 10 | | 1968 | 6.57 | 2 | | 1969 | 5.98 | 4 | | 1971 | 8.67 | 6 | | 1973 | 5.63 | 6 | | 1974 | 5.62 | 8 | | | | Year | QS | Rank | | 1963 | 20 | 6 | | 1967 | 20 | 8 | | 1968 | 22 | 6 | | 1974 | 18 | 8 | | | Year | QSP | Rank | | 1963 | .690 | 9 | | 1967 | .667 | 9 | | 1968 | .733 | 8 | | 1974 | .643 | 5 | |
| Year | CG | Rank | | 1963 | 8 | 3 | | 1965 | 2 | 9 | | 1966 | 8 | 1 | | 1967 | 3 | 8 | | 1968 | 3 | 8 | | 1969 | 3 | 7 | | | Year | CGP | Rank | | 1963 | .276 | 3 | | 1965 | .083 | 9 | | 1966 | .286 | 1 | | 1969 | .100 | 9 | | | Year | SHO | Rank | | 1962 | 1 | 10 | | 1963 | 1 | 9 | | 1966 | 1 | 6 | | 1967 | 1 | 6 | | 1968 | 1 | 9 | | 1969 | 1 | 9 | | | Year | GB% | Rank | | 1962 | 0.51 | 6 | | 1965 | 0.53 | 8 | | 1969 | 0.56 | 5 | | 1974 | 0.55 | 8 | | | Year | WAR | Rank | | 1963 | 4.6 | 6 | | 1967 | 3.6 | 10 | |