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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Vasily Jarovtsev | .4336 | 1968-1980 | |
| 2 | Tamasaburo Abe | .4011 | 1950-1961 | |
| 3 | Francisco Vargas# | .3939 | 1979-1991 | |
| 4 | Mathias Albertoni* | .3898 | 1953-1969 | |
| 5 | Charlemagne Freeman* | .3707 | 1934-1955 | |
| 6 | Theodor Frenkiel | .3706 | 1945-1955 | |
| 7 | Norbert Jones* | .3695 | 1946-1953 | |
| 8 | Héctor Cortés | .3628 | 1916-1928 | |
| 9 | Brenden Howson | .3595 | 1964-1970 | |
| 10 | Jorge Medrano* | .3593 | 1923-1935 | |
| 11 | Miguel Borbón | .3574 | 1925-1942 | |
| 12 | Petros Piatkowski* | .3571 | 1970-1978 | |
| 13 | James Oswald | .3520 | 1935-1944 | |
| 14 | Pedro Pérez | .3504 | 1935-1948 | |
| 15 | Mark Davenport | .3491 | 1914-1926 | |
| 16 | Paul Green | .3481 | 1952-1966 | |
| 17 | Albert McMurrich | .3477 | 1911-1920 | |
| 18 | Millard Montgomery | .3450 | 1970-1987 | |
| 19 | Brandon Moore | .3447 | 1911-1917 | |
| 20 | Martin Jordan | .3430 | 1970-1981 | |
| 21 | Kifle Kelueljang | .3367 | 1971-1984 | |
| 22 | Yunosuke Hayagawa | .3356 | 1971-1986 | |
| 23 | Cristo Gutiérrez | .3350 | 1931-1939 | |
| 24 | Henry Johnston# | .3297 | 1974-1990 | |
| 25 | Ron Swallow# | .3267 | 1977-1991 | |
| 26 | Ángel Velásquez | .3246 | 1920-1929 | |
| 27 | Mahmud Kapkobi | .3223 | 1970-1977 | |
| 28 | Aatto Sala | .3153 | 1976-1990 | |
| 29 | Ánibal Romero | .3149 | 1911-1917 | |
| 30 | Battista Caccianemici | .3093 | 1970-1979 | |
| 31 | Raúl Alfonzo | .3063 | 1938-1947 | |
| 32 | Pedro Quintanilla# | .3049 | 1977-1990 | |
| 33 | Håkon Olsnes | .3041 | 1971-1981 | |
| 34 | Louis Tiekink | .3030 | 1975-1985 | |
| 35 | Evan Leighton# | .2975 | 1976-1991 |
