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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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Matt Jachec | 2025-2025 | 8 | 5 | .615 | 5.93 | 42 | 0 | 0 | 0 | 19 | 44.0 | 50 | 29 | 6 | 16 | 50 |
| Bralin Jackson | 2015-2021 | 0 | 0 | .000 | 23.62 | 2 | 0 | 0 | 0 | 0 | 2.2 | 5 | 7 | 1 | 6 | 2 |
| Jay Jackson | 2013-2013 | 7 | 8 | .467 | 5.27 | 24 | 24 | 1 | 0 | 0 | 135.0 | 147 | 79 | 16 | 47 | 104 |
| Jordan Jackson | 2025-2025 | 9 | 5 | .643 | 4.73 | 19 | 19 | 0 | 0 | 0 | 110.1 | 137 | 58 | 11 | 53 | 60 |
| Justin Jackson | 2015-2016 | 6 | 1 | .857 | 5.06 | 60 | 5 | 0 | 0 | 2 | 106.2 | 115 | 60 | 10 | 60 | 85 |
| Zach Jackson | 2019-2022 | 13 | 9 | .591 | 4.22 | 96 | 0 | 0 | 0 | 5 | 145.0 | 118 | 68 | 8 | 112 | 172 |
| Alek Jacob | 2025-2025 | 3 | 0 | 1.000 | 7.59 | 8 | 0 | 0 | 0 | 0 | 10.2 | 12 | 9 | 2 | 6 | 11 |
| Justin Jacome | 2018-2021 | 4 | 3 | .571 | 5.91 | 10 | 10 | 0 | 0 | 0 | 56.1 | 75 | 37 | 8 | 26 | 43 |
| Drey Jameson | 2021-2021 | 3 | 3 | .500 | 3.89 | 6 | 6 | 0 | 0 | 0 | 39.1 | 28 | 17 | 4 | 11 | 40 |
| Hyun-seok Jang | 2025-2025 | 0 | 2 | .000 | 8.38 | 4 | 1 | 0 | 0 | 0 | 9.2 | 10 | 9 | 4 | 9 | 11 |
| Thomas Jankins | 2021-2023 | 4 | 1 | .800 | 1.98 | 14 | 9 | 0 | 0 | 0 | 54.2 | 35 | 12 | 2 | 13 | 41 |
| Jordan Jankowski | 2015-2016 | 8 | 8 | .500 | 5.68 | 81 | 2 | 0 | 0 | 10 | 107.2 | 117 | 68 | 10 | 65 | 98 |
| Justin Jarvis | 2022-2023 | 7 | 9 | .438 | 3.92 | 21 | 21 | 0 | 0 | 0 | 124.0 | 112 | 54 | 12 | 70 | 115 |
| Cristian Javier | 2019-2020 | 4 | 4 | .500 | 5.22 | 13 | 13 | 0 | 0 | 0 | 60.1 | 59 | 35 | 12 | 30 | 59 |
| Griffin Jax | 2017-2019 | 2 | 2 | .500 | 4.26 | 10 | 7 | 0 | 0 | 0 | 31.2 | 34 | 15 | 6 | 13 | 19 |
| Myles Jaye | 2016-2019 | 10 | 6 | .625 | 3.69 | 55 | 21 | 0 | 0 | 7 | 200.0 | 201 | 82 | 12 | 76 | 197 |
| Madison Jeffrey | 2025-2025 | 4 | 1 | .800 | 4.45 | 28 | 0 | 0 | 0 | 4 | 32.1 | 21 | 16 | 4 | 25 | 31 |
| Zach Jemiola | 2014-2018 | 9 | 10 | .474 | 5.73 | 47 | 16 | 0 | 0 | 0 | 149.1 | 187 | 95 | 22 | 59 | 121 |
| Tyrell Jenkins | 2014-2014 | 13 | 6 | .684 | 4.97 | 26 | 26 | 0 | 0 | 0 | 141.1 | 165 | 78 | 17 | 56 | 115 |
| Steven Jennings | 2022-2023 | 6 | 2 | .750 | 2.93 | 42 | 0 | 0 | 0 | 3 | 55.1 | 40 | 18 | 3 | 18 | 48 |
| Chris Jensen | 2014-2014 | 6 | 7 | .462 | 5.45 | 20 | 20 | 0 | 0 | 0 | 107.1 | 121 | 65 | 14 | 44 | 97 |
| Andre Jernigan | 2019-2019 | 0 | 0 | .000 | 13.50 | 2 | 0 | 0 | 0 | 1 | 0.2 | 4 | 1 | 1 | 0 | 0 |
| Bud Jeter | 2019-2021 | 3 | 12 | .200 | 6.31 | 98 | 0 | 0 | 0 | 1 | 122.2 | 144 | 86 | 15 | 71 | 108 |
| Dany Jimenez | 2021-2021 | 1 | 0 | 1.000 | 1.80 | 4 | 0 | 0 | 0 | 0 | 5.0 | 5 | 1 | 0 | 2 | 4 |
| Emerson Jimenez | 2020-2020 | 1 | 0 | 1.000 | 4.91 | 2 | 0 | 0 | 0 | 0 | 3.2 | 4 | 2 | 0 | 2 | 2 |
| Joe Jimenez | 2021-2021 | 0 | 1 | .000 | 2.08 | 14 | 0 | 0 | 0 | 1 | 17.1 | 16 | 4 | 0 | 4 | 15 |
| Ubaldo Jimenez | 2020-2020 | 0 | 0 | .000 | 7.20 | 1 | 1 | 0 | 0 | 0 | 5.0 | 7 | 4 | 1 | 2 | 3 |
| Jackson Jobe | 2022-2025 | 2 | 7 | .222 | 8.09 | 21 | 6 | 0 | 0 | 0 | 65.2 | 84 | 59 | 16 | 43 | 49 |
| Boby Johnson | 2024-2024 | 0 | 0 | .000 | 4.97 | 7 | 0 | 0 | 0 | 0 | 12.2 | 12 | 7 | 3 | 5 | 18 |
| Cole Johnson | 2015-2016 | 2 | 7 | .222 | 6.32 | 17 | 16 | 0 | 0 | 0 | 72.2 | 108 | 51 | 9 | 26 | 73 |
| Player | From-To | W | L | Pct | ERA | G | GS | CG | SHO | SV | IP | H | ER | HR | BB | SO |
| Drasen Johnson | 2016-2016 | 0 | 0 | .000 | 4.12 | 28 | 0 | 0 | 0 | 1 | 39.1 | 36 | 18 | 5 | 13 | 42 |
| Erik Johnson | 2013-2013 | 4 | 2 | .667 | 1.97 | 8 | 8 | 0 | 0 | 0 | 50.1 | 41 | 11 | 1 | 19 | 48 |
| Hobbs Johnson | 2015-2015 | 2 | 4 | .333 | 9.63 | 11 | 11 | 0 | 0 | 0 | 43.0 | 68 | 46 | 9 | 25 | 45 |
| Jordan Johnson | 2017-2021 | 27 | 14 | .659 | 4.07 | 76 | 47 | 2 | 1 | 2 | 325.0 | 300 | 147 | 30 | 139 | 316 |
| Michael Johnson | 2014-2017 | 19 | 12 | .613 | 5.61 | 156 | 1 | 0 | 0 | 3 | 253.2 | 295 | 158 | 29 | 148 | 210 |
| Patrick Johnson | 2013-2016 | 7 | 4 | .636 | 2.64 | 100 | 0 | 0 | 0 | 2 | 112.2 | 91 | 33 | 10 | 67 | 114 |
| Pierce Johnson | 2013-2013 | 0 | 0 | .000 | 7.71 | 1 | 1 | 0 | 0 | 0 | 4.2 | 7 | 4 | 0 | 3 | 2 |
| Preston Johnson | 2025-2025 | 3 | 7 | .300 | 6.37 | 25 | 25 | 0 | 0 | 0 | 113.0 | 119 | 80 | 17 | 92 | 99 |
| Ryan Johnson | 2025-2025 | 0 | 1 | .000 | 3.24 | 10 | 0 | 0 | 0 | 7 | 8.1 | 11 | 3 | 0 | 2 | 4 |
| Seth Johnson | 2022-2022 | 11 | 7 | .611 | 3.96 | 25 | 25 | 0 | 0 | 0 | 136.1 | 126 | 60 | 22 | 57 | 135 |
| Stephen Johnson | 2014-2018 | 10 | 19 | .345 | 5.68 | 198 | 0 | 0 | 0 | 16 | 217.0 | 227 | 137 | 28 | 159 | 240 |
| Ty Johnson | 2025-2025 | 2 | 0 | 1.000 | 4.58 | 7 | 7 | 0 | 0 | 0 | 35.1 | 35 | 18 | 4 | 18 | 39 |
| Chase Johnson-Mullins | 2018-2018 | 0 | 1 | .000 | 2.08 | 2 | 0 | 0 | 0 | 0 | 4.1 | 4 | 1 | 0 | 5 | 3 |
| Chris Jones | 2013-2014 | 16 | 8 | .667 | 3.94 | 39 | 39 | 0 | 0 | 0 | 235.0 | 198 | 103 | 13 | 121 | 207 |
| Connor W. Jones | 2022-2023 | 4 | 3 | .571 | 4.54 | 23 | 0 | 0 | 0 | 1 | 41.2 | 34 | 21 | 5 | 12 | 31 |
| Jahmai Jones | 2017-2020 | 0 | 0 | .000 | 0.00 | 1 | 0 | 0 | 0 | 0 | 0.2 | 1 | 0 | 0 | 1 | 1 |
| Jared Jones | 2022-2022 | 5 | 7 | .417 | 4.65 | 26 | 26 | 0 | 0 | 0 | 122.0 | 115 | 63 | 19 | 51 | 142 |
| Kyle Jones | 2024-2024 | 7 | 2 | .778 | 3.54 | 35 | 2 | 0 | 0 | 5 | 84.0 | 71 | 33 | 14 | 46 | 81 |
| Nick Jones | 2017-2017 | 0 | 3 | .000 | 4.15 | 24 | 0 | 0 | 0 | 0 | 52.0 | 48 | 24 | 4 | 29 | 52 |
| Penn Jones | 2024-2025 | 5 | 5 | .500 | 6.31 | 59 | 0 | 0 | 0 | 5 | 92.2 | 100 | 65 | 15 | 57 | 106 |
| Stephen Jones | 2024-2024 | 1 | 0 | 1.000 | 2.68 | 22 | 0 | 0 | 0 | 2 | 47.0 | 35 | 14 | 3 | 22 | 50 |
| Tyler Jones | 2013-2017 | 4 | 4 | .500 | 5.83 | 45 | 5 | 0 | 0 | 4 | 92.2 | 91 | 60 | 14 | 59 | 95 |
| Zachary Jones | 2014-2017 | 10 | 14 | .417 | 4.95 | 202 | 0 | 0 | 0 | 30 | 236.1 | 237 | 130 | 32 | 124 | 297 |
| Cory Jordan | 2015-2015 | 4 | 0 | 1.000 | 5.89 | 32 | 0 | 0 | 0 | 1 | 44.1 | 52 | 29 | 6 | 25 | 40 |
| Jose Jose | 2017-2017 | 0 | 1 | .000 | 10.80 | 9 | 0 | 0 | 0 | 0 | 16.2 | 25 | 20 | 6 | 12 | 12 |
| Elison Joseph | 2024-2024 | 1 | 2 | .333 | 2.53 | 19 | 0 | 0 | 0 | 2 | 32.0 | 21 | 9 | 1 | 13 | 46 |
| Ben Joyce | 2023-2023 | 2 | 4 | .333 | 4.21 | 34 | 0 | 0 | 0 | 23 | 36.1 | 29 | 17 | 3 | 17 | 37 |
| Chandler Jozwiak | 2023-2025 | 7 | 7 | .500 | 4.06 | 78 | 0 | 0 | 0 | 41 | 84.1 | 88 | 38 | 12 | 30 | 88 |
| Victor Juarez | 2025-2025 | 3 | 3 | .500 | 7.05 | 27 | 0 | 0 | 0 | 1 | 37.0 | 45 | 29 | 8 | 18 | 37 |
| Hayden Juenger | 2024-2025 | 1 | 1 | .500 | 5.93 | 25 | 5 | 0 | 0 | 1 | 60.2 | 71 | 40 | 14 | 33 | 43 |
| Player | From-To | W | L | Pct | ERA | G | GS | CG | SHO | SV | IP | H | ER | HR | BB | SO |
| Erick Julio | 2018-2021 | 20 | 17 | .541 | 4.60 | 115 | 49 | 1 | 0 | 8 | 377.1 | 440 | 193 | 52 | 170 | 295 |
| Su-Min Jung | 2013-2013 | 0 | 0 | .000 | 0.00 | 1 | 0 | 0 | 0 | 0 | 4.2 | 2 | 0 | 0 | 4 | 3 |
| Taylor Jungmann | 2013-2019 | 16 | 6 | .727 | 3.30 | 26 | 26 | 1 | 1 | 0 | 160.2 | 144 | 59 | 10 | 65 | 136 |
| Cameron Junker | 2020-2025 | 1 | 7 | .125 | 6.31 | 77 | 2 | 0 | 0 | 4 | 108.1 | 133 | 76 | 10 | 76 | 102 |
| Ariel Jurado | 2016-2017 | 8 | 3 | .727 | 2.00 | 42 | 12 | 0 | 0 | 14 | 94.2 | 76 | 21 | 7 | 26 | 113 |
