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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Tokutomi Suzuki# | .4291 | 2035-2038 | |
| 2 | Suezo Ishihara# | .4038 | 2035-2038 | |
| 3 | Katsunan Ichihara# | .4029 | 2028-2031 | |
| 4 | Jesús Morales# | .4027 | 2032-2035 | |
| 5 | Pete Acheson# | .3773 | 2031-2034 | |
| 6 | Ernesto Puente# | .3729 | 2033-2036 | |
| 7 | Andrew Thompson# | .3685 | 2036-2039 | |
| 8 | Lorenzo Tovar# | .3397 | 2034-2037 | |
| 9 | Benny Tucker# | .3306 | 2033-2036 | |
| 10 | Rio Fellick# | .3287 | 2032-2035 | |
| 11 | Azumamaro Hirai# | .3151 | 2035-2038 | |
| 12 | Jamie Badman# | .3096 | 2037-2040 | |
| 13 | Sugimoto Ohayashi# | .3074 | 2030-2033 | |
| 14 | Kiyonobu Nishiyama# | .3056 | 2034-2037 | |
| 15 | Robert Godefroy# | .2897 | 2032-2035 | |
| 16 | Narihari Kato# | .2810 | 2034-2037 | |
| 17 | Takejiro Takahashi# | .2782 | 2031-2034 | |
| 18 | Yu-shu Mai# | .2769 | 2033-2036 | |
| 19 | Craig Fountain# | .2397 | 2032-2035 |
