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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 |
|---|---|---|---|---|---|---|---|---|---|
| Dwayne Jackson | 2025-2026 | .350 | 0 | 1 | 0 | 0 | 0 | 0.00 | 0 |
| Kareem Jackson | 2025-2026 | .000 | 0 | 0 | 5 | 4 | 0 | 3.96 | 67 |
| Mike Jackson | 2025-2026 | .311 | 13 | 93 | 0 | 0 | 0 | 0.00 | 0 |
| Wally Jacob | 2025-2026 | .000 | 0 | 0 | 0 | 0 | 2 | 5.45 | 37 |
| Andy Jacobi | 2024-2025 | .308 | 3 | 32 | 0 | 0 | 0 | 0.00 | 0 |
| Aaron Jacobs | 2025-2026 | .338 | 31 | 138 | 0 | 0 | 0 | 0.00 | 0 |
| Aaron Jacobs | 2024-2025 | .328 | 14 | 50 | 0 | 0 | 0 | 0.00 | 0 |
| Tim Jacobs | 2026-2026 | .000 | 0 | 0 | 1 | 1 | 0 | 6.20 | 10 |
| Harley Jacobsen | 2026-2026 | .000 | 0 | 0 | 0 | 1 | 0 | 6.00 | 6 |
| Jorge Jacome | 2024-2024 | .000 | 0 | 0 | 6 | 8 | 0 | 10.07 | 34 |
| Alexis Jaimes | 2025-2026 | .000 | 0 | 0 | 0 | 4 | 0 | 5.36 | 19 |
| Jonathan Jaramillo | 2024-2026 | .217 | 8 | 38 | 0 | 0 | 0 | 0.00 | 0 |
| Steve Jarvis | 2024-2025 | .320 | 16 | 91 | 0 | 0 | 0 | 0.00 | 0 |
| Juan Jasso | 2024-2024 | .353 | 3 | 16 | 0 | 0 | 0 | 0.00 | 0 |
| Trent Jenkins | 2024-2026 | .306 | 4 | 14 | 0 | 0 | 0 | 0.00 | 0 |
| Mitch Jensen | 2024-2024 | .429 | 1 | 6 | 0 | 0 | 0 | 0.00 | 0 |
| John Jimenez | 2024-2024 | .280 | 26 | 74 | 0 | 0 | 0 | 0.00 | 0 |
| Jose Jimenez | 2026-2026 | .273 | 0 | 0 | 0 | 0 | 0 | 0.00 | 0 |
| Pedro Jimenez | 2026-2026 | .000 | 0 | 0 | 1 | 0 | 0 | 0.00 | 4 |
| Adam Johnson | 2025-2025 | .000 | 0 | 0 | 2 | 2 | 0 | 5.06 | 24 |
| Aiden Johnson | 2024-2026 | .285 | 14 | 57 | 0 | 0 | 0 | 0.00 | 0 |
| Brian Johnson | 2024-2025 | .285 | 41 | 131 | 0 | 0 | 0 | 0.00 | 0 |
| Chris Johnson | 2024-2024 | .276 | 3 | 25 | 0 | 0 | 0 | 0.00 | 0 |
| Dan Johnson | 2026-2026 | .000 | 0 | 0 | 1 | 0 | 0 | 1.50 | 3 |
| David Johnson | 2026-2026 | .250 | 1 | 8 | 0 | 0 | 0 | 0.00 | 0 |
| Jason Johnson | 2024-2024 | .083 | 1 | 2 | 0 | 0 | 0 | 0.00 | 0 |
| Javon Johnson | 2024-2024 | .294 | 0 | 4 | 0 | 0 | 0 | 0.00 | 0 |
| Jeff Johnson | 2025-2026 | .367 | 12 | 37 | 0 | 0 | 0 | 0.00 | 0 |
| Jimmy Johnson | 2026-2026 | .366 | 8 | 32 | 0 | 0 | 0 | 0.00 | 0 |
| Jon Johnson | 2025-2026 | .400 | 2 | 4 | 0 | 0 | 0 | 0.00 | 0 |
| Player | From-To | Avg | HR | RBI | W | L | SV | ERA | K |
| Josh Johnson | 2024-2025 | .315 | 6 | 30 | 0 | 0 | 0 | 0.00 | 0 |
| Justin Johnson | 2026-2026 | .341 | 3 | 9 | 0 | 0 | 0 | 0.00 | 0 |
| Mike Johnson | 2024-2026 | .255 | 12 | 54 | 0 | 0 | 0 | 0.00 | 0 |
| Nate Johnson | 2024-2025 | .312 | 25 | 94 | 0 | 0 | 0 | 0.00 | 0 |
| Tommy Johnson | 2026-2026 | .302 | 2 | 9 | 0 | 0 | 0 | 0.00 | 0 |
| Trent Johnson | 2024-2026 | .000 | 0 | 0 | 9 | 11 | 2 | 6.23 | 126 |
| Ahmed Joiner | 2024-2025 | .306 | 13 | 70 | 0 | 0 | 0 | 0.00 | 0 |
| Bobby Jones | 2024-2024 | .000 | 0 | 0 | 7 | 1 | 0 | 1.58 | 29 |
| Chance Jones | 2025-2025 | .368 | 15 | 53 | 0 | 0 | 0 | 0.00 | 0 |
| Charlie Jones | 2024-2024 | .250 | 0 | 2 | 0 | 0 | 0 | 0.00 | 0 |
| Chris Jones | 2026-2026 | .000 | 0 | 0 | 0 | 0 | 0 | 2.70 | 3 |
| Darius Jones | 2024-2024 | .250 | 0 | 0 | 0 | 0 | 0 | 0.00 | 0 |
| Jerry Jones | 2024-2024 | .332 | 8 | 46 | 0 | 0 | 0 | 0.00 | 0 |
| Kevin Jones | 2024-2025 | .285 | 13 | 70 | 0 | 0 | 0 | 0.00 | 0 |
| Larry Jones | 2024-2025 | .332 | 17 | 87 | 0 | 0 | 0 | 0.00 | 0 |
| Matt Jones | 2026-2026 | .310 | 7 | 27 | 0 | 0 | 0 | 0.00 | 0 |
| Mitch Jones | 2025-2025 | .000 | 0 | 0 | 0 | 1 | 0 | 54.00 | 0 |
| Tyler Jones | 2025-2026 | .269 | 1 | 7 | 0 | 0 | 0 | 0.00 | 0 |
| Adam Jordan | 2025-2025 | .343 | 10 | 58 | 0 | 0 | 0 | 0.00 | 0 |
| Adam Jordan | 2024-2026 | .260 | 16 | 46 | 0 | 0 | 0 | 0.00 | 0 |
| David Jordan | 2024-2024 | .307 | 9 | 33 | 0 | 0 | 0 | 0.00 | 0 |
| Mike Jordan | 2024-2024 | .361 | 10 | 37 | 0 | 0 | 0 | 0.00 | 0 |
| Bert Juarez | 2026-2026 | .000 | 0 | 0 | 0 | 0 | 0 | 0.00 | 6 |
| Edwin Juarez | 2024-2024 | .333 | 1 | 2 | 0 | 0 | 0 | 0.00 | 0 |
| Eric Jubin | 2024-2025 | .360 | 17 | 72 | 0 | 0 | 0 | 0.00 | 0 |
| Man-u Jung | 2026-2026 | .290 | 4 | 21 | 0 | 0 | 0 | 0.00 | 0 |
| Nate Jurgensen | 2024-2025 | .469 | 0 | 5 | 0 | 0 | 0 | 0.00 | 0 |
| Shane Justice | 2026-2026 | .000 | 0 | 0 | 0 | 1 | 0 | 17.36 | 2 |
