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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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chris Jacobson | 2024-2027 | 14 | 11 | .560 | 5.25 | 129 | 21 | 0 | 0 | 3 | 245.0 | 258 | 143 | 58 | 92 | 275 |
| Efrain Jaramillo | 2024-2026 | 6 | 1 | .857 | 5.18 | 103 | 18 | 0 | 0 | 2 | 121.2 | 140 | 70 | 26 | 38 | 117 |
| Alex Jasso | 2024-2027 | 2 | 2 | .500 | 5.43 | 83 | 0 | 0 | 0 | 1 | 104.1 | 122 | 63 | 31 | 56 | 93 |
| Aaron Jenkinson | 2024-2027 | 11 | 5 | .688 | 3.58 | 88 | 1 | 0 | 0 | 3 | 274.0 | 267 | 109 | 33 | 89 | 249 |
| Bill Jimenez | 2024-2027 | 7 | 8 | .467 | 5.11 | 108 | 0 | 0 | 0 | 7 | 165.2 | 165 | 94 | 26 | 91 | 139 |
| Edgar Jimenez | 2024-2027 | 10 | 11 | .476 | 5.19 | 125 | 24 | 0 | 0 | 2 | 170.0 | 178 | 98 | 23 | 64 | 195 |
| Randy Johnson | 2024-2027 | 21 | 12 | .636 | 3.08 | 147 | 0 | 0 | 0 | 74 | 181.0 | 134 | 62 | 25 | 59 | 206 |
| Josh Joline | 2024-2026 | 4 | 6 | .400 | 6.43 | 94 | 0 | 0 | 0 | 3 | 105.0 | 124 | 75 | 24 | 33 | 101 |
| Jason Jones | 2024-2027 | 19 | 38 | .333 | 5.77 | 84 | 84 | 0 | 0 | 0 | 418.1 | 455 | 268 | 88 | 159 | 381 |
| Ron Jones | 2024-2027 | 12 | 14 | .462 | 3.39 | 142 | 18 | 0 | 0 | 6 | 188.1 | 169 | 71 | 30 | 70 | 191 |
| Bobby Juarez | 2024-2027 | 33 | 33 | .500 | 4.55 | 89 | 89 | 1 | 0 | 0 | 532.2 | 521 | 269 | 83 | 170 | 577 |
| Carlos Juarez | 2024-2027 | 36 | 22 | .621 | 3.51 | 92 | 92 | 1 | 1 | 0 | 558.2 | 529 | 218 | 75 | 153 | 484 |
| Rene Juarez | 2024-2027 | 18 | 16 | .529 | 3.81 | 157 | 0 | 0 | 0 | 47 | 165.1 | 175 | 70 | 27 | 42 | 164 |
