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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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chip Jackson | 2020-2021 | 0 | 7 | .000 | 5.23 | 13 | 13 | 0 | 0 | 0 | 63.2 | 75 | 37 | 7 | 13 | 45 |
| Chris Jackson | 2019-2021 | 10 | 11 | .476 | 4.01 | 45 | 30 | 0 | 0 | 0 | 175.0 | 179 | 78 | 9 | 68 | 122 |
| Grant Jackson | 2022-2024 | 5 | 7 | .417 | 3.93 | 55 | 5 | 0 | 0 | 3 | 89.1 | 78 | 39 | 8 | 43 | 76 |
| Brett Jacobson | 2018-2019 | 4 | 7 | .364 | 3.19 | 63 | 0 | 0 | 0 | 9 | 87.1 | 76 | 31 | 5 | 18 | 86 |
| Juan Jaime | 2013-2016 | 25 | 25 | .500 | 4.45 | 88 | 84 | 1 | 0 | 0 | 489.1 | 466 | 242 | 60 | 213 | 470 |
| Chad James | 2018-2018 | 6 | 1 | .857 | 4.35 | 28 | 0 | 0 | 0 | 0 | 49.2 | 51 | 24 | 7 | 15 | 44 |
| Kerry James | 2018-2019 | 2 | 5 | .286 | 4.75 | 18 | 6 | 0 | 0 | 0 | 60.2 | 70 | 32 | 7 | 23 | 27 |
| Iago Januario | 2016-2021 | 18 | 16 | .529 | 3.38 | 188 | 0 | 0 | 0 | 31 | 268.2 | 249 | 101 | 29 | 78 | 261 |
| Justin Jarvis | 2022-2023 | 6 | 5 | .545 | 5.91 | 16 | 16 | 0 | 0 | 0 | 80.2 | 93 | 53 | 12 | 25 | 73 |
| Daulton Jefferies | 2019-2019 | 5 | 2 | .714 | 3.32 | 10 | 10 | 1 | 1 | 0 | 62.1 | 58 | 23 | 4 | 16 | 42 |
| Chad Jenkins | 2016-2020 | 20 | 19 | .513 | 3.73 | 66 | 62 | 0 | 0 | 1 | 361.2 | 354 | 150 | 35 | 106 | 295 |
| Dan Jennings | 2015-2020 | 2 | 0 | 1.000 | 3.44 | 29 | 0 | 0 | 0 | 1 | 34.0 | 26 | 13 | 3 | 23 | 29 |
| Kevin Jepsen | 2015-2015 | 3 | 1 | .750 | 3.23 | 29 | 0 | 0 | 0 | 0 | 30.2 | 27 | 11 | 1 | 16 | 30 |
| Eswarlin Jimenez | 2013-2018 | 12 | 5 | .706 | 4.40 | 41 | 23 | 1 | 0 | 1 | 147.1 | 151 | 72 | 17 | 49 | 112 |
| Ubaldo Jimenez | 2015-2020 | 4 | 3 | .571 | 4.07 | 28 | 9 | 0 | 0 | 0 | 84.0 | 75 | 38 | 7 | 34 | 78 |
| Alfred Johnson | 2020-2022 | 16 | 17 | .485 | 3.28 | 58 | 58 | 0 | 0 | 0 | 299.0 | 267 | 109 | 24 | 80 | 254 |
| Cody Johnson | 2012-2018 | 0 | 0 | .000 | 6.43 | 3 | 0 | 0 | 0 | 0 | 7.0 | 9 | 5 | 1 | 7 | 0 |
| Hunter Johnson | 2020-2021 | 7 | 5 | .583 | 3.49 | 19 | 19 | 0 | 0 | 0 | 113.1 | 104 | 44 | 10 | 18 | 101 |
| Jared Johnson | 2023-2024 | 1 | 3 | .250 | 3.00 | 10 | 2 | 0 | 0 | 2 | 12.0 | 12 | 4 | 2 | 8 | 19 |
| Jim Johnson | 2019-2019 | 0 | 0 | .000 | 0.00 | 1 | 0 | 0 | 0 | 0 | 1.1 | 0 | 0 | 0 | 0 | 1 |
| Jordan Johnson | 2023-2024 | 4 | 1 | .800 | 3.90 | 23 | 0 | 0 | 0 | 6 | 27.2 | 22 | 12 | 4 | 11 | 40 |
| Josh R. Johnson | 2012-2017 | 0 | 0 | .000 | 6.75 | 1 | 0 | 0 | 0 | 0 | 2.2 | 3 | 2 | 1 | 3 | 0 |
| M.D. Johnson | 2021-2024 | 3 | 2 | .600 | 4.17 | 27 | 8 | 0 | 0 | 2 | 58.1 | 54 | 27 | 4 | 30 | 55 |
| Matt Johnson | 2019-2024 | 32 | 35 | .478 | 3.51 | 126 | 97 | 0 | 0 | 2 | 566.1 | 513 | 221 | 44 | 189 | 469 |
| Michael Johnson | 2019-2022 | 6 | 8 | .429 | 2.86 | 87 | 0 | 0 | 0 | 21 | 126.0 | 98 | 40 | 10 | 48 | 114 |
| Michael Johnson | 2019-2022 | 9 | 5 | .643 | 3.13 | 75 | 0 | 0 | 0 | 3 | 135.1 | 128 | 47 | 13 | 35 | 141 |
| Will Johnson | 2022-2023 | 2 | 0 | 1.000 | 2.08 | 11 | 0 | 0 | 0 | 8 | 13.0 | 8 | 3 | 1 | 1 | 9 |
| Jason Johnston | 2023-2024 | 2 | 2 | .500 | 2.30 | 27 | 4 | 0 | 0 | 2 | 47.0 | 40 | 12 | 3 | 10 | 33 |
| Abraham Jones | 2018-2019 | 10 | 3 | .769 | 2.39 | 69 | 2 | 0 | 0 | 11 | 90.1 | 59 | 24 | 5 | 35 | 94 |
| Cameron Jones | 2023-2023 | 4 | 4 | .500 | 3.12 | 38 | 0 | 0 | 0 | 12 | 49.0 | 42 | 17 | 2 | 22 | 70 |
| Player | From-To | W | L | Pct | ERA | G | GS | CG | SHO | SV | IP | H | ER | HR | BB | SO |
| Greg Jones | 2021-2021 | 1 | 2 | .333 | 5.50 | 10 | 0 | 0 | 0 | 0 | 18.0 | 28 | 11 | 0 | 7 | 13 |
| James C. Jones | 2019-2021 | 1 | 5 | .167 | 2.48 | 50 | 0 | 0 | 0 | 0 | 61.2 | 50 | 17 | 3 | 18 | 48 |
| Nate Jones | 2012-2014 | 8 | 7 | .533 | 6.67 | 137 | 0 | 0 | 0 | 4 | 140.1 | 162 | 104 | 28 | 73 | 139 |
| Victor Jones | 2018-2022 | 18 | 28 | .391 | 3.85 | 168 | 45 | 0 | 0 | 2 | 516.0 | 500 | 221 | 64 | 146 | 385 |
| Donnie Joseph | 2014-2017 | 5 | 5 | .500 | 3.75 | 85 | 0 | 0 | 0 | 6 | 72.0 | 74 | 30 | 6 | 43 | 87 |
| Liu-chun Ju | 2019-2023 | 0 | 1 | .000 | 5.79 | 8 | 1 | 0 | 0 | 1 | 9.1 | 9 | 6 | 0 | 3 | 12 |
| Jacob Julius | 2013-2021 | 0 | 0 | .000 | 12.27 | 1 | 0 | 0 | 0 | 0 | 3.2 | 3 | 5 | 1 | 7 | 0 |
| Su-Min Jung | 2015-2016 | 2 | 0 | 1.000 | 5.16 | 8 | 2 | 0 | 0 | 0 | 22.2 | 19 | 13 | 3 | 20 | 20 |
| Jair Jurrjens | 2018-2019 | 0 | 1 | .000 | 3.98 | 15 | 0 | 0 | 0 | 0 | 31.2 | 34 | 14 | 0 | 17 | 27 |
