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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Derek Conner | .5650 | 1919 | |
| 2 | Derek Conner | .5587 | 1916 | |
| 3 | Daniel Carver | .5439 | 1941 | |
| 4 | Jim Esponda | .5277 | 1939 | |
| 5 | Jorge Nazur | .5144 | 1943 | |
| 6 | Derek Conner | .5000 | 1918 | |
| 6 | Pedro Aguirre | .5000 | 1944 | |
| 8 | Wilber Gregg | .4978 | 1943 | |
| 9 | Jim Esponda | .4974 | 1938 | |
| 10 | Mike Bolton | .4961 | 1926 | |
| 11 | Roy Parker | .4940 | 1923 | |
| 12 | Bill McTavish | .4939 | 1945 | |
| 12 | Jesús Castillo | .4939 | 1930 | |
| 14 | Roberto Manuel | .4923 | 1945 | |
| 15 | Mel González | .4917 | 1943 | |
| 16 | Bill McTavish | .4889 | 1946 | |
| 17 | Jim Esponda | .4885 | 1940 | |
| 18 | Clem Walsh | .4875 | 1923 | |
| 19 | Fernando Barrón | .4818 | 1941 | |
| 20 | António Hidalgo | .4815 | 1940 | |
| 21 | Carlos Ordóñez | .4805 | 1938 | |
| 22 | Pedro Aguirre | .4797 | 1947 | |
| 23 | António Morales | .4795 | 1928 | |
| 24 | António Morales | .4771 | 1930 | |
| 25 | Bill McTavish | .4767 | 1947 | |
| 26 | Yancy Jarl* | .4747 | 1917 | |
| 27 | Albert Kelley | .4745 | 1940 | |
| 28 | Eric Rowe | .4743 | 1933 | |
| 29 | Manuel Alonzo | .4720 | 1940 | |
| 30 | Fernando Barrón | .4706 | 1939 | |
| 31 | Louwe Schoe | .4696 | 1933 | |
| 32 | Street Shepard* | .4692 | 1932 | |
| 33 | Street Shepard* | .4684 | 1933 | |
| 34 | Tim Smith | .4675 | 1929 | |
| 35 | Jian Wang | .4634 | 1942 | |
| 36 | Mike Bolton | .4569 | 1924 | |
| 37 | Tanner Cashmann | .4558 | 1927 | |
| 38 | Manuel Alonzo | .4549 | 1941 | |
| 39 | Julián González | .4539 | 1940 | |
| 40 | António Hidalgo | .4537 | 1938 | |
| 41 | Carlos Fierro | .4534 | 1926 | |
| 42 | Ernesto Gutiérrez | .4529 | 1938 | |
| 43 | Trey Carr | .4527 | 1930 | |
| 44 | Jed Harrison | .4503 | 1915 | |
| 45 | Pedro Aguirre | .4500 | 1945 | |
| 46 | Louwe Schoe | .4492 | 1934 | |
| 47 | Billy Rey | .4491 | 1936 | |
| 48 | Francisco López | .4485 | 1962 | |
| 49 | Jason Bonner | .4474 | 1925 | |
| 50 | Billy Rey | .4460 | 1937 | |
| 51 | Fernando Barrón | .4457 | 1942 | |
| 52 | Jorge Nazur | .4449 | 1945 | |
| 53 | Clarence Martin | .4448 | 1944 | |
| 54 | Zacarías Gómez | .4444 | 1935 | |
| 55 | Dewey Ortíz | .4429 | 1973 | |
| 56 | Gary Reynolds | .4412 | 1944 | |
| 57 | Burt Miller | .4409 | 1923 | |
| 58 | Philip Ervin | .4390 | 1934 | |
| 59 | Roberto Manuel | .4381 | 1946 | |
| 59 | Alex Pinhay | .4381 | 1936 | |
| 61 | Bill McTavish | .4377 | 1944 | |
| 62 | Héctor Carrasco | .4368 | 1929 | |
| 63 | Wilber Gregg | .4367 | 1944 | |
| 64 | Manuel Alonzo | .4348 | 1942 | |
| 65 | Héctor Carrasco | .4332 | 1928 | |
| 66 | Carlos Fierro | .4329 | 1928 | |
| 67 | Rafael González | .4327 | 1934 | |
| 68 | Cris Villarreal | .4322 | 1942 | |
| 69 | Trey Carr | .4319 | 1931 | |
| 70 | Tim Smith | .4316 | 1928 | |
| 71 | António Hidalgo | .4315 | 1941 | |
| 72 | Jian Wang | .4309 | 1943 | |
| 73 | Roy Parker | .4291 | 1925 | |
| 74 | Carlos Fierro | .4286 | 1927 | |
| 74 | Eric Hughes | .4286 | 1947 | |
| 76 | Tanner Cashmann | .4279 | 1928 | |
| 77 | José Sánchez | .4278 | 1927 | |
| 78 | Craig Reed | .4274 | 1922 | |
| 79 | Vincent Wagner | .4262 | 1939 | |
| 79 | Tim Smith | .4262 | 1926 | |
| 81 | Buck Clarke | .4255 | 1931 | |
| 82 | Zacarías Gómez | .4253 | 1934 | |
| 83 | Street Shepard* | .4250 | 1931 | |
| 84 | Martín Rivera | .4238 | 1925 | |
| 85 | Albert Kelley | .4237 | 1939 | |
| 85 | Ben Horn | .4237 | 1917 | |
| 87 | Lorenzo Díaz | .4234 | 1932 | |
| 88 | António Morales | .4225 | 1931 | |
| 89 | Steve MacPherson | .4222 | 1936 | |
| 89 | Fernando Barrón | .4222 | 1940 | |
| 91 | Michael Henderson | .4217 | 1938 | |
| 92 | Jason Bonner | .4214 | 1924 | |
| 93 | Bill Bennett | .4208 | 1921 | |
| 94 | Larry Lavine | .4202 | 1936 | |
| 95 | Russ Ward | .4194 | 1924 | |
| 96 | Cole Ward | .4189 | 1937 | |
| 96 | Will Williams | .4189 | 1943 | |
| 98 | Arthur Hogan | .4183 | 1934 | |
| 99 | Culley Winston | .4180 | 1937 | |
| 99 | Dan Rogers | .4180 | 1917 |
