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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 |
|---|---|---|---|---|---|---|---|---|---|
| Dominique Jackson | 2015-2019 | .251 | 6 | 31 | 0 | 0 | 0 | 0.00 | 0 |
| Eric Jackson | 2022-2027 | .344 | 0 | 15 | 0 | 0 | 0 | 0.00 | 0 |
| Jeremy Jackson | 2029-2029 | .000 | 0 | 0 | 0 | 0 | 0 | 18.00 | 7 |
| Rob Jackson | 2028-2028 | .179 | 0 | 15 | 0 | 0 | 0 | 0.00 | 0 |
| Rob Jackson | 2025-2026 | .000 | 0 | 0 | 4 | 3 | 0 | 4.76 | 92 |
| Bob Jacobs | 2026-2026 | .157 | 0 | 15 | 0 | 0 | 0 | 0.00 | 0 |
| Ernie Jacobs | 2020-2021 | .223 | 5 | 31 | 0 | 0 | 0 | 0.00 | 0 |
| Joe Jacobs | 2026-2026 | .000 | 0 | 0 | 7 | 5 | 0 | 4.66 | 83 |
| Jon Jacobs | 2017-2020 | .000 | 0 | 0 | 7 | 4 | 1 | 5.33 | 119 |
| Steve Jacobs | 2021-2021 | .271 | 7 | 48 | 0 | 0 | 0 | 0.00 | 0 |
| Wilson Jacobs | 2015-2016 | .000 | 0 | 0 | 16 | 6 | 0 | 3.12 | 237 |
| Randy Jacobson | 2025-2025 | .388 | 1 | 15 | 0 | 0 | 0 | 0.00 | 0 |
| Eric Jamerson | 2020-2020 | .000 | 0 | 0 | 0 | 0 | 0 | 0.00 | 0 |
| Charlie James | 2023-2023 | .000 | 0 | 0 | 0 | 0 | 1 | 1.64 | 11 |
| Dan James | 2028-2028 | .000 | 0 | 0 | 0 | 0 | 0 | 0.00 | 0 |
| Ed James | 2029-2029 | .307 | 6 | 56 | 0 | 0 | 0 | 0.00 | 0 |
| Jeremy James | 2021-2021 | .000 | 0 | 0 | 5 | 7 | 0 | 5.35 | 67 |
| Jerry James | 2027-2028 | .165 | 0 | 5 | 0 | 0 | 0 | 0.00 | 0 |
| Tim James | 2016-2017 | .218 | 5 | 40 | 0 | 0 | 0 | 0.00 | 0 |
| Danny Jansen | 2022-2022 | .500 | 2 | 27 | 0 | 0 | 0 | 0.00 | 0 |
| Márcio Jara | 2026-2027 | .223 | 8 | 39 | 0 | 0 | 0 | 0.00 | 0 |
| Anastasio Jaramillo | 2022-2027 | .000 | 0 | 0 | 7 | 8 | 3 | 3.62 | 155 |
| António Jaramillo | 2022-2023 | .257 | 1 | 26 | 0 | 0 | 0 | 0.00 | 0 |
| Jake Jarvis | 2015-2017 | .000 | 0 | 0 | 7 | 1 | 3 | 2.88 | 81 |
| Jon Jefferson | 2020-2020 | .667 | 0 | 2 | 0 | 0 | 0 | 0.00 | 0 |
| Mike Jeffreys | 2016-2016 | .000 | 0 | 0 | 0 | 0 | 0 | 2.45 | 14 |
| Chris Jeffries | 2025-2026 | .286 | 0 | 2 | 0 | 0 | 0 | 0.00 | 0 |
| Al Jenkins | 2027-2029 | .000 | 0 | 0 | 8 | 18 | 0 | 6.81 | 199 |
| Alex Jenkins | 2023-2025 | .286 | 11 | 71 | 0 | 0 | 0 | 0.00 | 0 |
| Brendan Jenkins | 2026-2028 | .000 | 0 | 0 | 3 | 1 | 2 | 6.49 | 91 |
| Player | From-To | Avg | HR | RBI | W | L | SV | ERA | K |
| Greg Jenkins | 2029-2029 | .000 | 0 | 0 | 4 | 0 | 2 | 4.98 | 36 |
| Ken Jenkins | 2025-2027 | .000 | 0 | 0 | 3 | 5 | 8 | 7.12 | 62 |
| Bob Jennings | 2027-2027 | .161 | 0 | 8 | 0 | 0 | 0 | 0.00 | 0 |
| Darrell Jennings | 2021-2021 | .000 | 0 | 0 | 0 | 0 | 0 | 0.00 | 0 |
| Dusty Jennings | 2021-2021 | .000 | 0 | 0 | 0 | 3 | 13 | 3.04 | 20 |
| Bud Jeter | 2015-2015 | .000 | 0 | 0 | 0 | 0 | 0 | 2.84 | 10 |
| Augusto Jiménez | 2026-2027 | .319 | 5 | 36 | 0 | 0 | 0 | 0.00 | 0 |
| Iván Jiménez | 2023-2024 | .000 | 0 | 0 | 4 | 5 | 12 | 5.14 | 47 |
| Jesús Jiménez | 2027-2027 | .261 | 0 | 9 | 0 | 0 | 0 | 0.00 | 0 |
| Jorge Jiménez | 2021-2021 | .263 | 0 | 3 | 0 | 0 | 0 | 0.00 | 0 |
| Manny Jiménez | 2022-2023 | .000 | 0 | 0 | 3 | 9 | 0 | 5.11 | 102 |
| Wilkyns Jimenez | 2018-2018 | .000 | 0 | 0 | 0 | 0 | 0 | 0.00 | 0 |
| Chih-hsiung Jiu | 2027-2027 | .250 | 0 | 0 | 0 | 0 | 0 | 0.00 | 0 |
| Dave Johns | 2025-2025 | .000 | 0 | 0 | 0 | 0 | 0 | 0.00 | 0 |
| Brandon Johnson | 2015-2016 | .000 | 0 | 0 | 0 | 1 | 1 | 5.68 | 52 |
| Dan Johnson | 2026-2026 | .000 | 0 | 0 | 4 | 2 | 0 | 5.66 | 73 |
| Dave Johnson | 2018-2018 | .000 | 0 | 0 | 0 | 0 | 0 | 0.00 | 0 |
| Eric Johnson | 2029-2029 | .120 | 0 | 4 | 0 | 0 | 0 | 0.00 | 0 |
| Jim Johnson | 2016-2016 | .000 | 0 | 0 | 0 | 0 | 0 | 0.00 | 0 |
| Pat Johnson | 2018-2019 | .353 | 0 | 2 | 0 | 0 | 0 | 0.00 | 0 |
| Stan Johnson | 2026-2029 | .000 | 0 | 0 | 16 | 4 | 0 | 3.69 | 217 |
| Artie Johnston | 2021-2023 | .262 | 4 | 74 | 0 | 0 | 0 | 0.00 | 0 |
| Dave Johnston | 2017-2028 | .000 | 0 | 0 | 2 | 7 | 0 | 7.50 | 61 |
| Ed Johnston | 2026-2026 | .356 | 5 | 19 | 0 | 0 | 0 | 0.00 | 0 |
| Jim Johnston | 2020-2023 | .360 | 1 | 19 | 0 | 0 | 0 | 0.00 | 0 |
| Joe Johnston | 2015-2018 | .246 | 6 | 61 | 0 | 0 | 0 | 0.00 | 0 |
| Jon Johnston | 2027-2029 | .283 | 7 | 111 | 0 | 0 | 0 | 0.00 | 0 |
| Kevin Johnston | 2015-2016 | .245 | 0 | 8 | 0 | 0 | 0 | 0.00 | 0 |
| Rob Johnston | 2025-2025 | .295 | 6 | 42 | 0 | 0 | 0 | 0.00 | 0 |
| Tynan Johnston | 2015-2017 | .000 | 0 | 0 | 1 | 2 | 0 | 6.35 | 21 |
| Player | From-To | Avg | HR | RBI | W | L | SV | ERA | K |
| Al Jones | 2022-2024 | .000 | 0 | 0 | 9 | 3 | 2 | 4.97 | 131 |
| Connor Jones | 2017-2017 | .327 | 8 | 39 | 0 | 0 | 0 | 0.00 | 0 |
| Hugh Jones | 2029-2029 | .000 | 0 | 0 | 0 | 0 | 0 | 18.69 | 12 |
| Jeff Jones | 2029-2029 | .000 | 0 | 0 | 2 | 2 | 0 | 6.48 | 32 |
| Jeremy Jones | 2027-2027 | .000 | 0 | 0 | 0 | 4 | 1 | 6.43 | 32 |
| Joe Jones | 2024-2024 | .000 | 0 | 0 | 3 | 1 | 1 | 2.36 | 62 |
| Kevin Jones | 2024-2026 | .000 | 0 | 0 | 7 | 13 | 0 | 6.09 | 115 |
| Reginald Jones | 2017-2017 | .000 | 0 | 0 | 5 | 4 | 2 | 4.52 | 65 |
| Ronnie Jones | 2029-2029 | .214 | 0 | 15 | 0 | 0 | 0 | 0.00 | 0 |
| Tim Jones | 2020-2021 | .000 | 0 | 0 | 3 | 4 | 2 | 5.32 | 148 |
| Zach Jones | 2017-2017 | .000 | 0 | 0 | 3 | 7 | 2 | 4.64 | 71 |
| Dan Jordan | 2024-2025 | .000 | 0 | 0 | 3 | 3 | 0 | 5.06 | 73 |
| Jim Jordan | 2029-2029 | .229 | 1 | 6 | 0 | 0 | 0 | 0.00 | 0 |
| Bob Joseph | 2017-2017 | .274 | 4 | 30 | 0 | 0 | 0 | 0.00 | 0 |
| Dan Joseph | 2027-2028 | .279 | 3 | 12 | 0 | 0 | 0 | 0.00 | 0 |
| Doug Joseph | 2020-2020 | .000 | 0 | 0 | 0 | 0 | 0 | 4.91 | 3 |
| John Joubert | 2019-2029 | .341 | 4 | 34 | 0 | 0 | 0 | 0.00 | 0 |
| Dani Juárez | 2026-2028 | .267 | 1 | 16 | 0 | 0 | 0 | 0.00 | 0 |
| Jorge Juárez | 2021-2021 | .000 | 0 | 0 | 1 | 1 | 0 | 5.05 | 59 |
| José Juárez | 2021-2022 | .000 | 0 | 0 | 6 | 10 | 0 | 5.87 | 181 |
| Cremente Justino | 2021-2021 | .333 | 2 | 9 | 0 | 0 | 0 | 0.00 | 0 |
