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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Year | Champion | LgERA | LgAvg | Lg |
|---|---|---|---|---|
| 1952 | Providence Anglers | 4.45 | .249 | CUP |
| 1953 | New York Skyliners | 4.39 | .248 | CUP |
| 1954 | Los Angeles Stars | 4.18 | .253 | CUP |
| 1955 | Sicily Mafia | 4.27 | .268 | CUP |
| 1956 | Los Angeles Stars | 4.06 | .270 | CUP |
| 1957 | Providence Anglers | 3.58 | .250 | CUP |
| 1958 | Venezuela | 5.13 | .279 | CUP |
| 1959 | 0.00 | .000 | CUP |
