 |
| |
| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Keiichi Sakamoto | 1.048 | 1938-1942 | |
| 2 | Eiju Miyake# | 1.047 | 1940-1947 | |
| 3 | Eiji Kobayashi# | 1.023 | 1944-1947 | |
| 4 | Yukihiko Miyamoto | 1.019 | 1938-1944 | |
| 5 | Hoshi Noda | 1.018 | 1938-1946 | |
| 6 | Norinaga Takase# | 1.010 | 1939-1947 | |
| 7 | Ikumasa Fujimoto# | 0.987 | 1940-1947 | |
| 8 | Kosuke Niwa | 0.985 | 1938-1944 | |
| 9 | Umito Nishioka# | 0.961 | 1941-1947 |
