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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | IP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Mashashi Kogawa# | 788.0 | 2013-2013 | |
| 2 | Hyotaru Noro | 762.2 | 2015-2015 | |
| 3 | Satoshi Kuhabara# | 761.2 | 2015-2015 | |
| 4 | Yoshitora Suzuki# | 753.0 | 2015-2015 | |
| 5 | Natsu Sasaki# | 744.0 | 2016-2016 | |
| 6 | Ryosei Honma | 743.0 | 2012-2012 | |
| 7 | Kazuyuki Yamada# | 739.0 | 2014-2014 | |
| 8 | Motonobu Higashi | 731.0 | 2015-2015 | |
| 9 | Jun'ichi Ogura# | 728.2 | 2012-2012 | |
| 10 | Hoshi Okumura | 723.0 | 2015-2015 | |
| 11 | Mutsuhito Takeda | 700.2 | 2013-2013 | |
| 12 | Masahiko Takahashi# | 676.0 | 2012-2012 | |
| 13 | Yasukazu Chikafuji | 648.0 | 2015-2015 | |
| 14 | Totoya Sakei# | 645.0 | 2014-2014 | |
| 15 | Masaru Suzuki# | 611.1 | 2016-2016 | |
| 16 | Kakuzo Minami | 606.2 | 2014-2014 | |
| 17 | Teruo Suzuki# | 588.0 | 2016-2016 | |
| 18 | Tamasaburo Yamasaki | 577.2 | 2015-2015 |
