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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Player | From-To | W | L | Pct | ERA | G | GS | CG | SHO | SV | IP | H | ER | HR | BB | SO |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ramachandran Jayantilal | 2019-2019 | 0 | 0 | .000 | 5.94 | 9 | 0 | 0 | 0 | 0 | 16.2 | 23 | 11 | 3 | 6 | 20 |
| Shi-ping Jiang | 2017-2018 | 3 | 3 | .500 | 4.95 | 36 | 1 | 0 | 0 | 3 | 56.1 | 55 | 31 | 11 | 20 | 54 |
| Fakhruddin Johiya | 2017-2018 | 11 | 7 | .611 | 5.05 | 24 | 24 | 0 | 0 | 0 | 123.0 | 119 | 69 | 13 | 60 | 116 |
| Si-xun Jong | 2018-2019 | 2 | 1 | .667 | 8.28 | 23 | 0 | 0 | 0 | 0 | 29.1 | 42 | 27 | 7 | 22 | 25 |
| Venkatesha Jonnalagadda | 2019-2019 | 2 | 4 | .333 | 10.57 | 9 | 9 | 0 | 0 | 0 | 38.1 | 64 | 45 | 6 | 20 | 32 |
| Toyoharu Jouda | 2013-2013 | 5 | 1 | .833 | 7.39 | 50 | 0 | 0 | 0 | 1 | 59.2 | 85 | 49 | 9 | 35 | 70 |
| Mitsuhide Jouon | 2012-2012 | 3 | 7 | .300 | 6.17 | 17 | 17 | 0 | 0 | 0 | 89.0 | 109 | 61 | 19 | 41 | 64 |
| Sumiteru Jouon | 2015-2015 | 3 | 7 | .300 | 10.67 | 37 | 10 | 0 | 0 | 0 | 71.2 | 100 | 85 | 21 | 59 | 55 |
| Yamato Jouon | 2016-2016 | 2 | 7 | .222 | 7.51 | 33 | 8 | 0 | 0 | 0 | 68.1 | 84 | 57 | 13 | 59 | 55 |
| Xue-liang Ju | 2018-2019 | 0 | 0 | .000 | 5.16 | 18 | 0 | 0 | 0 | 0 | 29.2 | 36 | 17 | 8 | 10 | 23 |
| Gin-fan Juan | 2019-2019 | 0 | 2 | .000 | 3.06 | 16 | 0 | 0 | 0 | 4 | 17.2 | 18 | 6 | 1 | 8 | 10 |
| Ye-qing Jue | 2017-2018 | 2 | 2 | .500 | 5.74 | 45 | 0 | 0 | 0 | 2 | 47.0 | 55 | 30 | 12 | 36 | 44 |
