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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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Greg Jacknewitz | 2019-2020 | 2 | 6 | .250 | 9.40 | 13 | 9 | 0 | 0 | 0 | 37.1 | 47 | 39 | 7 | 31 | 23 |
| Andre Jackson | 2020-2021 | 3 | 2 | .600 | 4.74 | 24 | 15 | 0 | 0 | 0 | 87.1 | 98 | 46 | 7 | 38 | 75 |
| Alek Jacob | 2022-2023 | 3 | 10 | .231 | 5.30 | 36 | 13 | 0 | 0 | 9 | 90.0 | 90 | 53 | 14 | 42 | 59 |
| David Jagoditsh | 2013-2017 | 5 | 16 | .238 | 7.37 | 83 | 18 | 0 | 0 | 2 | 174.2 | 242 | 143 | 25 | 121 | 149 |
| Mac James | 2017-2023 | 0 | 0 | .000 | 32.40 | 2 | 0 | 0 | 0 | 0 | 1.2 | 4 | 6 | 1 | 7 | 3 |
| Thomas Jankins | 2018-2023 | 0 | 2 | .000 | 14.82 | 16 | 6 | 0 | 0 | 0 | 44.1 | 79 | 73 | 3 | 65 | 31 |
| Ryan January | 2020-2023 | 0 | 1 | .000 | 21.00 | 2 | 0 | 0 | 0 | 0 | 3.0 | 4 | 7 | 0 | 9 | 1 |
| Griffin Jax | 2017-2018 | 0 | 5 | .000 | 11.43 | 19 | 12 | 0 | 0 | 0 | 65.1 | 123 | 83 | 16 | 73 | 51 |
| Tyler Jay | 2019-2021 | 4 | 2 | .667 | 4.11 | 51 | 0 | 0 | 0 | 6 | 70.0 | 73 | 32 | 4 | 31 | 58 |
| Myles Jaye | 2018-2019 | 8 | 6 | .571 | 5.62 | 35 | 16 | 0 | 0 | 3 | 121.2 | 144 | 76 | 14 | 60 | 73 |
| Michael Jefferson | 2013-2013 | 4 | 16 | .200 | 7.09 | 30 | 30 | 1 | 1 | 0 | 144.2 | 200 | 114 | 16 | 77 | 103 |
| Liam Jenkins | 2023-2023 | 1 | 1 | .500 | 14.79 | 9 | 0 | 0 | 0 | 0 | 14.0 | 25 | 23 | 3 | 16 | 6 |
| Ryan Jensen | 2021-2022 | 6 | 7 | .462 | 5.22 | 35 | 16 | 0 | 0 | 0 | 110.1 | 90 | 64 | 14 | 72 | 109 |
| Kevin Jepsen | 2017-2017 | 4 | 0 | 1.000 | 2.20 | 30 | 0 | 0 | 0 | 1 | 57.1 | 38 | 14 | 3 | 23 | 86 |
| Williams Jerez | 2014-2021 | 13 | 5 | .722 | 3.54 | 109 | 0 | 0 | 0 | 9 | 140.0 | 103 | 55 | 15 | 65 | 194 |
| Eddie Jimenez | 2021-2021 | 2 | 1 | .667 | 2.76 | 20 | 0 | 0 | 0 | 0 | 32.2 | 20 | 10 | 3 | 28 | 26 |
| Joe Jimenez | 2017-2021 | 5 | 2 | .714 | 3.09 | 49 | 0 | 0 | 0 | 23 | 55.1 | 42 | 19 | 6 | 26 | 79 |
| Johendi Jiminian | 2015-2015 | 4 | 8 | .333 | 5.61 | 25 | 25 | 0 | 0 | 0 | 112.1 | 128 | 70 | 17 | 62 | 109 |
| Ulises Joaquin | 2016-2016 | 0 | 0 | .000 | 5.81 | 35 | 0 | 0 | 0 | 1 | 52.2 | 61 | 34 | 7 | 41 | 53 |
| Boby Johnson | 2022-2023 | 1 | 1 | .500 | 4.18 | 19 | 0 | 0 | 0 | 3 | 28.0 | 33 | 13 | 2 | 9 | 31 |
| Cobi Johnson | 2020-2022 | 9 | 2 | .818 | 3.74 | 89 | 3 | 0 | 0 | 3 | 137.1 | 138 | 57 | 14 | 76 | 114 |
| Jacob Johnson | 2014-2015 | 11 | 3 | .786 | 6.64 | 105 | 0 | 0 | 0 | 2 | 168.0 | 173 | 124 | 15 | 68 | 169 |
| MD Johnson | 2022-2022 | 2 | 1 | .667 | 3.79 | 4 | 4 | 0 | 0 | 0 | 19.0 | 16 | 8 | 1 | 11 | 24 |
| Michael Johnson | 2017-2017 | 0 | 1 | .000 | 8.22 | 11 | 0 | 0 | 0 | 0 | 15.1 | 24 | 14 | 4 | 8 | 14 |
| Pierce Johnson | 2019-2019 | 6 | 0 | 1.000 | 3.54 | 28 | 0 | 0 | 0 | 2 | 53.1 | 42 | 21 | 4 | 35 | 71 |
| Stephen Johnson | 2018-2019 | 4 | 2 | .667 | 17.56 | 49 | 3 | 0 | 0 | 0 | 54.1 | 122 | 106 | 21 | 82 | 21 |
| Kyle Johnston | 2023-2023 | 5 | 1 | .833 | 2.23 | 27 | 0 | 0 | 0 | 9 | 44.1 | 36 | 11 | 3 | 20 | 46 |
| Cory Jones | 2016-2017 | 7 | 4 | .636 | 5.54 | 44 | 11 | 0 | 0 | 0 | 91.0 | 100 | 56 | 12 | 56 | 92 |
| Damon Jones | 2022-2022 | 7 | 2 | .778 | 2.75 | 48 | 2 | 0 | 0 | 1 | 85.0 | 60 | 26 | 4 | 54 | 102 |
| Spencer Jones | 2018-2020 | 4 | 2 | .667 | 2.10 | 40 | 0 | 0 | 0 | 4 | 60.0 | 44 | 14 | 4 | 20 | 60 |
| Player | From-To | W | L | Pct | ERA | G | GS | CG | SHO | SV | IP | H | ER | HR | BB | SO |
| Zachary Jones | 2018-2019 | 4 | 3 | .571 | 4.35 | 50 | 1 | 0 | 0 | 1 | 82.2 | 68 | 40 | 7 | 55 | 100 |
| Mitchell Jordan | 2019-2021 | 0 | 0 | .000 | 6.75 | 6 | 3 | 0 | 0 | 0 | 16.0 | 21 | 12 | 1 | 15 | 13 |
| Ariel Jurado | 2020-2020 | 6 | 1 | .857 | 3.75 | 8 | 8 | 1 | 0 | 0 | 48.0 | 55 | 20 | 6 | 10 | 30 |
