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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 | 2020-2020 | .000 | 0 | 0 | 1 | 5 | 17 | 2.68 | 26 |
| Russell Jackson | 2017-2017 | .313 | 22 | 59 | 0 | 0 | 0 | 0.00 | 0 |
| Timothy Jackson | 2015-2020 | .000 | 0 | 0 | 6 | 12 | 2 | 5.39 | 102 |
| Justin Jamerson | 2016-2020 | .000 | 0 | 0 | 0 | 1 | 1 | 5.11 | 38 |
| Rudy Jenkins | 2016-2016 | .000 | 0 | 0 | 0 | 0 | 0 | 2.00 | 10 |
| 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 |
| 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 |
| Jim Johnstone | 2017-2019 | .000 | 0 | 0 | 7 | 7 | 0 | 5.49 | 112 |
| Steven Johnstone | 2015-2018 | .305 | 14 | 59 | 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 |
| Teddy Jones | 2020-2020 | .000 | 0 | 0 | 4 | 2 | 0 | 5.79 | 60 |
| 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 |
| Player | From-To | Avg | HR | RBI | W | L | SV | ERA | K |
| José Júlio | 2018-2018 | .000 | 0 | 0 | 1 | 1 | 0 | 5.35 | 39 |
