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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Year | Champion | LgERA | LgAvg | Lg |
|---|---|---|---|---|
| 1958 | The United States | 5.26 | .278 | BWC |
| 1959 | 0.00 | .000 | BWC | |
| 1960 | 0.00 | .000 | BWC | |
| 1961 | The United States | 5.31 | .281 | BWC |
| 1962 | 0.00 | .000 | BWC | |
| 1963 | 0.00 | .000 | BWC | |
| 1964 | The United States | 5.55 | .286 | BWC |
| 1965 | 0.00 | .000 | BWC | |
| 1966 | 0.00 | .000 | BWC | |
| 1967 | England | 5.23 | .278 | BWC |
| 1968 | 0.00 | .000 | BWC | |
| 1969 | 0.00 | .000 | BWC | |
| 1970 | Dominican Republic | 4.19 | .258 | BWC |
| 1971 | 0.00 | .000 | BWC | |
| 1972 | 0.00 | .000 | BWC | |
| 1973 | The United States | 4.54 | .269 | BWC |
| 1974 | 0.00 | .000 | BWC | |
| 1975 | 0.00 | .000 | BWC | |
| 1976 | 0.00 | .000 | BWC | |
| 1977 | The United States | 4.71 | .271 | BWC |
| 1978 | 0.00 | .000 | BWC | |
| 1979 | 0.00 | .000 | BWC | |
| 1980 | 0.00 | .000 | BWC | |
| 1981 | The United States | 4.34 | .260 | BWC |
| 1982 | 0.00 | .000 | BWC | |
| 1983 | 0.00 | .000 | BWC | |
| 1984 | The United States | 4.24 | .247 | BWC |
| 1985 | 0.00 | .000 | BWC | |
| 1986 | 0.00 | .000 | BWC | |
| 1987 | 0.00 | .000 | BWC | |
| 1988 | Dominican Republic | 3.98 | .232 | BWC |
