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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | IP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Yoshino Okabe# | 861.1 | 2014-2014 | |
| 2 | Yodo Inagaki# | 851.0 | 2012-2012 | |
| 3 | Soseki Aoki# | 849.2 | 2016-2016 | |
| 4 | Rintaro Toyota | 834.0 | 2013-2013 | |
| 5 | Yoshida Hayakawa# | 820.1 | 2012-2012 | |
| 6 | Koji Miyakawa | 805.0 | 2014-2014 | |
| 7 | Sozen Shimizu | 779.0 | 2015-2015 | |
| 8 | Yugoro Kudara# | 778.0 | 2013-2013 | |
| 9 | Saikaku Endo | 772.2 | 2013-2013 | |
| 10 | Ieyoshi Matsuo | 733.0 | 2015-2015 | |
| 11 | Norogumi Suzuki# | 719.1 | 2016-2016 | |
| 12 | Shusaku Sugiyama# | 705.0 | 2015-2015 | |
| 13 | Seitaro Uenohara# | 637.0 | 2012-2012 | |
| 14 | Tanyu Suzuki | 615.0 | 2012-2012 |
