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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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Frank Jackson | 2017-2017 | 1 | 2 | .333 | 18.90 | 6 | 0 | 0 | 0 | 0 | 3.1 | 4 | 7 | 1 | 3 | 3 |
| Jason Jackson | 2015-2015 | 4 | 5 | .444 | 7.97 | 14 | 12 | 0 | 0 | 0 | 61.0 | 78 | 54 | 9 | 34 | 47 |
| Leroy Jackson | 2015-2016 | 9 | 7 | .562 | 7.47 | 30 | 22 | 0 | 0 | 0 | 127.2 | 186 | 106 | 12 | 74 | 97 |
| Ricky Jackson | 2019-2023 | 20 | 14 | .588 | 3.59 | 95 | 41 | 1 | 0 | 1 | 320.2 | 293 | 128 | 21 | 137 | 234 |
| Timothy Jackson | 2017-2023 | 13 | 12 | .520 | 4.25 | 151 | 12 | 0 | 0 | 5 | 230.2 | 266 | 109 | 12 | 114 | 181 |
| Edward Jensen | 2017-2018 | 5 | 4 | .556 | 5.19 | 59 | 0 | 0 | 0 | 2 | 85.0 | 95 | 49 | 9 | 41 | 71 |
| Félix Jiménez | 2015-2016 | 8 | 14 | .364 | 5.16 | 32 | 32 | 0 | 0 | 0 | 186.2 | 196 | 107 | 21 | 94 | 213 |
| Mario Jiménez | 2015-2018 | 13 | 7 | .650 | 4.32 | 102 | 0 | 0 | 0 | 1 | 145.2 | 151 | 70 | 13 | 56 | 136 |
| Cole Johnson | 2015-2015 | 5 | 11 | .312 | 3.85 | 22 | 20 | 0 | 0 | 0 | 107.2 | 113 | 46 | 3 | 48 | 106 |
| James Johnson | 2016-2016 | 1 | 2 | .333 | 4.46 | 22 | 0 | 0 | 0 | 0 | 34.1 | 34 | 17 | 4 | 16 | 29 |
| Jim Johnstone | 2016-2016 | 0 | 0 | .000 | 8.03 | 8 | 0 | 0 | 0 | 0 | 12.1 | 24 | 11 | 0 | 5 | 7 |
| Barry Jones | 2016-2016 | 3 | 4 | .429 | 4.43 | 47 | 0 | 0 | 0 | 14 | 40.2 | 41 | 20 | 3 | 24 | 61 |
| Bryan Jones | 2015-2022 | 8 | 21 | .276 | 4.49 | 232 | 0 | 0 | 0 | 69 | 236.1 | 211 | 118 | 20 | 161 | 236 |
| Teddy Jones | 2023-2023 | 8 | 6 | .571 | 2.62 | 20 | 20 | 1 | 1 | 0 | 123.2 | 105 | 36 | 5 | 63 | 105 |
| Tom Jones | 2016-2022 | 17 | 17 | .500 | 3.85 | 64 | 57 | 1 | 0 | 1 | 358.0 | 325 | 153 | 30 | 135 | 390 |
| Greg Jordan | 2017-2018 | 14 | 10 | .583 | 3.21 | 85 | 0 | 0 | 0 | 38 | 87.0 | 73 | 31 | 5 | 43 | 98 |
| José Juárez | 2020-2021 | 0 | 2 | .000 | 6.26 | 8 | 3 | 1 | 0 | 0 | 23.0 | 29 | 16 | 0 | 11 | 14 |
