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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Eiju Miyake# | 1.141 | 1941 | |
| 2 | Tsugumichi Saiki | 1.109 | 1938 | |
| 3 | Tsuyoshi Tomaki# | 1.093 | 1941 | |
| 4 | Tsuyoshi Tomaki# | 1.083 | 1942 | |
| 5 | Tsuyoshi Tomaki# | 1.060 | 1944 | |
| 6 | Eizo Yanagi# | 1.057 | 1947 | |
| 6 | Tsuyoshi Tomaki# | 1.057 | 1939 | |
| 8 | Sadamu Nakata | 1.056 | 1943 | |
| 8 | Chugo Hirai | 1.056 | 1939 | |
| 10 | Tsuyoshi Tomaki# | 1.055 | 1943 | |
| 11 | Tsuyoshi Tomaki# | 1.054 | 1940 | |
| 12 | Sadamu Nakata | 1.053 | 1939 | |
| 12 | Kensaku Dobashi# | 1.053 | 1947 | |
| 12 | Sadamu Nakata | 1.053 | 1942 | |
| 15 | Sadamu Nakata | 1.049 | 1938 | |
| 16 | Eiju Miyake# | 1.034 | 1946 | |
| 17 | Takao Matsumoto# | 1.033 | 1944 | |
| 18 | Takao Matsumoto# | 1.029 | 1946 | |
| 19 | Kensaku Dobashi# | 1.027 | 1946 | |
| 20 | Tsugumichi Saiki | 1.026 | 1942 | |
| 21 | Chugo Hirai | 1.025 | 1940 | |
| 21 | Sadamu Nakata | 1.025 | 1940 | |
| 23 | Reijiro Fujii# | 1.019 | 1947 | |
| 24 | Masao Furutani | 1.017 | 1938 | |
| 25 | Sadamu Nakata | 1.015 | 1941 | |
| 26 | Tsugumichi Saiki | 1.014 | 1940 | |
| 27 | Katsunosuki Inoue# | 1.012 | 1944 | |
| 28 | Reijiro Fujii# | 1.010 | 1946 | |
| 28 | Gombei Okazaki# | 1.010 | 1947 | |
| 30 | Eizo Yanagi# | 1.009 | 1946 | |
| 31 | Reijiro Fujii# | 1.008 | 1943 | |
| 32 | Chugo Hirai | 1.000 | 1944 | |
| 33 | Chugo Hirai | 0.997 | 1943 | |
| 34 | Yasuo Kaneshige# | 0.987 | 1946 | |
| 34 | Kenichi Hiramatsu | 0.987 | 1938 | |
| 36 | Shinsaku Yamaguchi | 0.984 | 1941 | |
| 36 | Chugo Hirai | 0.984 | 1941 | |
| 38 | Michito Fujimoto | 0.974 | 1942 | |
| 39 | Naizen Takahashi# | 0.973 | 1946 | |
| 40 | Senri Taguchi# | 0.969 | 1941 | |
| 41 | Tadasumi Tanaka# | 0.968 | 1944 | |
| 41 | Yasuo Kaneshige# | 0.968 | 1947 | |
| 43 | Senri Taguchi# | 0.964 | 1943 | |
| 44 | Kosaburo Nakagawa# | 0.961 | 1947 | |
| 45 | Taira Tokunaga | 0.960 | 1938 | |
| 45 | Tadasumi Tanaka# | 0.960 | 1946 | |
| 47 | Naizen Takahashi# | 0.957 | 1947 | |
| 48 | Yasuo Kaneshige# | 0.954 | 1940 | |
| 48 | Yoshio Kato | 0.954 | 1938 | |
| 50 | Senri Taguchi# | 0.950 | 1944 | |
| 51 | Michito Fujimoto | 0.944 | 1943 | |
| 52 | Kenichi Hiramatsu | 0.939 | 1939 | |
| 53 | Shusaku Hirose | 0.929 | 1941 | |
| 54 | Shusaku Hirose | 0.926 | 1939 | |
| 54 | Senri Taguchi# | 0.926 | 1942 | |
| 56 | Yasuo Kaneshige# | 0.917 | 1939 | |
| 57 | Taira Tokunaga | 0.901 | 1942 |
