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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Player | From-To | Avg | HR | RBI | W | L | SV | ERA | K |
|---|---|---|---|---|---|---|---|---|---|
| Frank Jackson | 2015-2016 | .000 | 0 | 0 | 1 | 1 | 0 | 4.65 | 42 |
| Kent Jackson | 2020-2020 | .242 | 3 | 14 | 0 | 0 | 0 | 0.00 | 0 |
| Ricky Jackson | 2020-2021 | .000 | 0 | 0 | 5 | 13 | 21 | 3.79 | 100 |
| Robert Jackson | 2021-2021 | .264 | 6 | 21 | 0 | 0 | 0 | 0.00 | 0 |
| Russell Jackson | 2017-2017 | .313 | 22 | 59 | 0 | 0 | 0 | 0.00 | 0 |
| Timothy Jackson | 2015-2021 | .000 | 0 | 0 | 7 | 15 | 3 | 5.14 | 124 |
| Justin Jamerson | 2016-2021 | .000 | 0 | 0 | 0 | 1 | 1 | 5.06 | 38 |
| Kyle James | 2021-2021 | .262 | 1 | 18 | 0 | 0 | 0 | 0.00 | 0 |
| Wallace James | 2021-2021 | .236 | 0 | 8 | 0 | 0 | 0 | 0.00 | 0 |
| Rudy Jenkins | 2016-2016 | .000 | 0 | 0 | 0 | 0 | 0 | 2.00 | 10 |
| Marty Jennings | 2021-2021 | .300 | 1 | 2 | 0 | 0 | 0 | 0.00 | 0 |
| Bill Jensen | 2018-2018 | .000 | 0 | 0 | 0 | 0 | 0 | 4.41 | 8 |
| Edward Jensen | 2015-2016 | .000 | 0 | 0 | 3 | 2 | 0 | 2.98 | 49 |
| Felipe Jiménez | 2020-2020 | .000 | 0 | 0 | 0 | 0 | 0 | 0.00 | 0 |
| Mario Jiménez | 2021-2021 | .000 | 0 | 0 | 1 | 0 | 1 | 3.57 | 10 |
| Cole Johnson | 2021-2021 | .000 | 0 | 0 | 3 | 3 | 0 | 3.74 | 24 |
| Donald Johnson | 2017-2018 | .000 | 0 | 0 | 6 | 7 | 11 | 4.04 | 73 |
| Franklin Johnson | 2019-2019 | .000 | 0 | 0 | 0 | 0 | 0 | 6.17 | 10 |
| Gregory Johnson | 2017-2017 | .328 | 6 | 66 | 0 | 0 | 0 | 0.00 | 0 |
| James Johnson | 2017-2018 | .000 | 0 | 0 | 7 | 9 | 1 | 4.46 | 129 |
| Paul Johnson | 2018-2018 | .377 | 2 | 10 | 0 | 0 | 0 | 0.00 | 0 |
| Ralph Johnson | 2017-2018 | .342 | 9 | 58 | 0 | 0 | 0 | 0.00 | 0 |
| Rick Johnson | 2016-2017 | .246 | 4 | 46 | 0 | 0 | 0 | 0.00 | 0 |
| Steven Johnson | 2016-2019 | .302 | 15 | 97 | 0 | 0 | 0 | 0.00 | 0 |
| Terry Johnson | 2017-2019 | .251 | 6 | 42 | 0 | 0 | 0 | 0.00 | 0 |
| Denver Johnston | 2015-2016 | .000 | 0 | 0 | 0 | 0 | 0 | 0.00 | 5 |
| Larry Johnston | 2021-2021 | .258 | 0 | 5 | 0 | 0 | 0 | 0.00 | 0 |
| Dustin Johnstone | 2021-2021 | .248 | 4 | 24 | 0 | 0 | 0 | 0.00 | 0 |
| Jim Johnstone | 2017-2021 | .000 | 0 | 0 | 10 | 10 | 0 | 5.27 | 140 |
| Steven Johnstone | 2015-2018 | .305 | 14 | 59 | 0 | 0 | 0 | 0.00 | 0 |
| Player | From-To | Avg | HR | RBI | W | L | SV | ERA | K |
| Ethan Jollymour | 2021-2021 | .301 | 5 | 14 | 0 | 0 | 0 | 0.00 | 0 |
| Bryan Jones | 2020-2020 | .000 | 0 | 0 | 4 | 2 | 0 | 2.75 | 35 |
| Henry Jones | 2018-2019 | .331 | 2 | 24 | 0 | 0 | 0 | 0.00 | 0 |
| Leon Jones | 2019-2019 | .000 | 0 | 0 | 1 | 5 | 0 | 8.04 | 17 |
| Leonard Jones | 2015-2019 | .294 | 16 | 65 | 0 | 0 | 0 | 0.00 | 0 |
| Steven Jones | 2021-2021 | .000 | 0 | 0 | 1 | 3 | 10 | 4.82 | 13 |
| Teddy Jones | 2020-2021 | .000 | 0 | 0 | 14 | 7 | 0 | 4.45 | 151 |
| Johnny Joyce | 2019-2020 | .000 | 0 | 0 | 4 | 2 | 0 | 4.68 | 45 |
| José Juárez | 2017-2019 | .215 | 3 | 18 | 0 | 0 | 0 | 0.00 | 0 |
| Miguel Juárez | 2020-2020 | .309 | 12 | 56 | 0 | 0 | 0 | 0.00 | 0 |
| José Júlio | 2018-2018 | .000 | 0 | 0 | 1 | 1 | 0 | 5.35 | 39 |
