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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Lg | LgAvg | LgERA | Champion | Year | Champion | LgERA | LgAvg | Lg |
|---|---|---|---|---|---|---|---|---|
| LMB | .240 | 3.62 | Ponce Hidalgos | 1904 | Naranjito Predilectos | 3.45 | .237 | LJP |
| LMB | .242 | 3.72 | San German Hermosos | 1905 | Patillas Panaderos | 3.63 | .240 | LJP |
| LMB | .248 | 3.85 | Cabo Rojo Maravillosos | 1906 | Utuado Serranos | 3.78 | .245 | LJP |
| LMB | .254 | 3.40 | Aguada Catecumenes | 1907 | Naguabo Malditos | 3.33 | .256 | LJP |
| LMB | .260 | 3.72 | Florida Estribaciones | 1908 | Patillas Panaderos | 3.63 | .261 | LJP |
| LMB | .268 | 3.73 | Ponce Hidalgos | 1909 | Naguabo Malditos | 3.56 | .262 | LJP |
| LMB | .269 | 3.60 | Juana Diaz Principes | 1910 | Naguabo Malditos | 3.64 | .268 | LJP |
| LMB | .267 | 3.59 | Cabo Rojo Maravillosos | 1911 | Naguabo Malditos | 3.79 | .270 | LJP |
| LMB | .267 | 3.67 | Manati Hoplitas | 1912 | Trujillo Alto Arrecostaos | 3.54 | .264 | LJP |
| LMB | .265 | 3.57 | San Juan Ciudadanos | 1913 | Guayama Aprendices | 3.46 | .262 | LJP |
