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| |
| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Keiichi Sakamoto | 1.103 | 1941 | |
| 2 | Eiju Miyake# | 1.099 | 1941 | |
| 3 | Hiroaki Shimada# | 1.098 | 1944 | |
| 4 | Keiichi Sakamoto | 1.072 | 1939 | |
| 5 | Eiju Miyake# | 1.070 | 1942 | |
| 6 | Keiichi Sakamoto | 1.058 | 1942 | |
| 7 | Souji Yamashita# | 1.049 | 1940 | |
| 8 | Keiichi Sakamoto | 1.036 | 1938 | |
| 9 | Eiju Miyake# | 1.034 | 1947 | |
| 10 | Eiji Kobayashi# | 1.032 | 1944 | |
| 11 | Eiju Miyake# | 1.030 | 1943 | |
| 12 | Kosuke Niwa | 1.029 | 1940 | |
| 13 | Hoshi Noda | 1.026 | 1938 | |
| 14 | Hoshi Noda | 1.025 | 1939 | |
| 15 | Hoshi Noda | 1.024 | 1940 | |
| 16 | Tomoharu Kanda# | 1.021 | 1947 | |
| 16 | Eiji Kobayashi# | 1.021 | 1946 | |
| 16 | Masanao Kawai# | 1.021 | 1946 | |
| 16 | Yukihiko Miyamoto | 1.021 | 1943 | |
| 20 | Masato Yokoyama | 1.019 | 1941 | |
| 21 | Norinaga Takase# | 1.018 | 1943 | |
| 22 | Norinaga Takase# | 1.015 | 1946 | |
| 23 | Norinaga Takase# | 1.011 | 1947 | |
| 23 | Hoshi Noda | 1.011 | 1941 | |
| 25 | Fumitake Saiki | 1.009 | 1944 | |
| 25 | Gihei Nakamura# | 1.009 | 1944 | |
| 27 | Gihei Nakamura# | 1.008 | 1946 | |
| 28 | Souji Yamashita# | 1.007 | 1939 | |
| 29 | Norinaga Takase# | 1.006 | 1942 | |
| 30 | Masahide Teramoto | 1.005 | 1938 | |
| 30 | Ikumasa Fujimoto# | 1.005 | 1943 | |
| 32 | Tomoharu Kanda# | 1.004 | 1946 | |
| 33 | Kenji Osaki | 1.001 | 1944 | |
| 34 | Hoshi Noda | 0.999 | 1942 | |
| 35 | Keiichi Sakamoto | 0.998 | 1940 | |
| 36 | Masato Yokoyama | 0.997 | 1938 | |
| 36 | Norinaga Takase# | 0.997 | 1941 | |
| 36 | Gihei Nakamura# | 0.997 | 1947 | |
| 39 | Seisaku Horikawa | 0.996 | 1940 | |
| 40 | Takayuri Mukai | 0.995 | 1939 | |
| 41 | Tomohiro Morinaga | 0.994 | 1938 | |
| 42 | Kiyoshi Takabayashi | 0.989 | 1944 | |
| 43 | Takumi Hirayama# | 0.986 | 1944 | |
| 44 | Umito Nishioka# | 0.985 | 1946 | |
| 45 | Kosaburo Nakagawa# | 0.980 | 1943 | |
| 46 | Kosuke Niwa | 0.979 | 1938 | |
| 47 | Kosuke Niwa | 0.978 | 1939 | |
| 47 | Ikumasa Fujimoto# | 0.978 | 1947 | |
| 47 | Kosuke Niwa | 0.978 | 1942 | |
| 50 | Ikumasa Fujimoto# | 0.976 | 1946 | |
| 51 | Masahide Teramoto | 0.973 | 1940 | |
| 52 | Umito Nishioka# | 0.968 | 1941 | |
| 53 | Mineto Akahoshi# | 0.966 | 1947 | |
| 54 | Itsuma Kaneda# | 0.959 | 1947 | |
| 55 | Itsuma Kaneda# | 0.957 | 1946 | |
| 56 | Umito Nishioka# | 0.955 | 1943 | |
| 57 | Masahide Teramoto | 0.953 | 1939 | |
| 57 | Kosuke Niwa | 0.953 | 1941 | |
| 59 | Ryusuke Shimamoto | 0.948 | 1939 | |
| 60 | Umito Nishioka# | 0.932 | 1942 |
