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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Ben Chapman | .410 | 1946-1966 | |
| 2 | Elmer Valo | .382 | 1946-1962 | |
| 3 | Bernie Carbo | .380 | 1946-1954 | |
| 4 | Carl Yastrzemski | .370 | 1946-1959 | |
| 4 | Rick Monday | .370 | 1946-1962 | |
| 4 | Hank Aaron | .370 | 1946-1960 | |
| 7 | Manny Ramirez | .364 | 1946-1960 | |
| 8 | Jay Buhner | .362 | 1949-1961 | |
| 9 | Shin-Soo Choo | .359 | 1946-1953 | |
| 10 | Trea Turner# | .354 | 1962-1969 | |
| 11 | Al Pilarcik | .353 | 1951-1961 | |
| 12 | Dion James | .349 | 1954-1967 | |
| 13 | Jose Cardenal | .348 | 1952-1967 | |
| 14 | Chili Davis | .347 | 1946-1958 | |
| 14 | Larry Doby | .347 | 1954-1968 | |
| 16 | Carl Everett | .346 | 1946-1960 | |
| 16 | Rocky Colavito# | .346 | 1965-1969 | |
| 18 | Ike Boone | .340 | 1954-1964 | |
| 19 | Leon Roberts | .339 | 1946-1955 | |
| 20 | Bob Allison | .335 | 1946-1957 | |
| 21 | Ruppert Jones | .325 | 1952-1962 | |
| 22 | Candy Maldonado | .321 | 1949-1964 | |
| 23 | Vladimir Guerrero# | .318 | 1956-1968 | |
| 23 | Trot Nixon# | .318 | 1963-1969 | |
| 25 | Ryan Thompson | .314 | 1954-1966 | |
| 26 | Raul Mondesi | .312 | 1946-1960 | |
| 27 | Steve Whitaker# | .307 | 1958-1968 | |
| 28 | Mel Almada# | .304 | 1952-1969 | |
| 29 | Preston Ward# | .295 | 1962-1969 | |
| 30 | Dante Bichette | .289 | 1946-1960 |
