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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Jim Perkins | .6880 | 1950 | |
| 2 | Víctor Ramírez* | .5959 | 1940 | |
| 3 | Octávio Martínez | .5891 | 1950 | |
| 4 | Júlio Granados | .5704 | 1950 | |
| 5 | Víctor Ramírez* | .5661 | 1938 | |
| 6 | Allen David | .5568 | 1950 | |
| 7 | Lynn Neal | .5562 | 1940 | |
| 8 | Salvador Cuellar | .5481 | 1950 | |
| 9 | Víctor Ramírez* | .5473 | 1939 | |
| 10 | Aaron Conley | .5455 | 1938 | |
| 11 | Alvin Boyle | .5369 | 1946 | |
| 12 | Gabriel Padno | .5344 | 1942 | |
| 13 | Sean Descamps | .5313 | 1946 | |
| 14 | Jacob Smith | .5281 | 1950 | |
| 15 | Gavin McGuire | .5269 | 1946 | |
| 16 | Jon Gardner | .5263 | 1950 | |
| 17 | Andrés Deleón | .5259 | 1939 | |
| 18 | Emmett Black | .5250 | 1940 | |
| 19 | Onofrio Massarelli | .5155 | 1950 | |
| 20 | Aaron Conley | .5150 | 1936 | |
| 21 | Júlio Domínguez | .5140 | 1929 | |
| 22 | Alberto Jiménez | .5115 | 1925 | |
| 23 | Iván Reynoso | .5103 | 1941 | |
| 24 | Billy Thomas | .5085 | 1954 | |
| 25 | Claudio Pacheco | .5076 | 1943 | |
| 26 | Pedro Cruz | .5072 | 1941 | |
| 27 | Jeff Simpson | .5057 | 1942 | |
| 28 | Will Daniels | .5055 | 1935 | |
| 29 | Dave Gardner | .5054 | 1963 | |
| 30 | Chris Whitehead | .5052 | 1931 | |
| 31 | Billy Thomas | .5033 | 1956 | |
| 32 | Ron Kerr | .5030 | 1945 | |
| 32 | Jesús Mercado | .5030 | 1938 | |
| 34 | Jorge Gonzáles | .5028 | 1928 | |
| 35 | José Pérez | .5025 | 1925 | |
| 36 | Gregorio Pierotti | .5000 | 1953 | |
| 36 | Iván Reynoso | .5000 | 1940 | |
| 36 | Lúcio Rodríguez | .5000 | 1950 | |
| 36 | Quintino Cantone | .5000 | 1913 | |
| 36 | Luke Peters | .5000 | 1933 | |
| 36 | Jonathan Cunningham | .5000 | 1934 | |
| 36 | Andy O'Connor | .5000 | 1937 | |
| 36 | Sean Descamps | .5000 | 1945 | |
| 44 | Anthony Ball | .4974 | 1945 | |
| 44 | Roy Buschlen | .4974 | 1954 | |
| 46 | Derek Walker | .4973 | 1927 | |
| 47 | Allen David | .4972 | 1953 | |
| 48 | Brent Harris | .4957 | 1950 | |
| 49 | Mike Walsh | .4950 | 1947 | |
| 50 | Javier Vega | .4942 | 1923 | |
| 51 | Pablo Ramos | .4932 | 1944 | |
| 52 | Steven Smith | .4920 | 1931 | |
| 53 | Paco Martínez | .4903 | 1942 | |
| 54 | Bob Blevins | .4887 | 1950 | |
| 55 | Juan Ramírez | .4879 | 1964 | |
| 56 | Nabil Dujardin | .4878 | 1931 | |
| 57 | Andy MacFadden | .4870 | 1961 | |
| 58 | Belchyor Ávila | .4868 | 1933 | |
| 59 | Derek Walker | .4862 | 1926 | |
| 60 | Luke Peters | .4857 | 1936 | |
| 60 | Chris Whitehead | .4857 | 1932 | |
| 62 | Mike Fitzpatrick | .4848 | 1968 | |
| 62 | George Calhoun | .4848 | 1933 | |
| 64 | Chris Paige | .4834 | 1933 | |
| 65 | Arthur Whittier | .4828 | 1938 | |
| 66 | Javier Díaz | .4821 | 1938 | |
| 67 | Bob Sharp | .4809 | 1931 | |
| 68 | Derek Walker | .4806 | 1929 | |
| 68 | Ki-tong Teoh | .4806 | 1925 | |
| 70 | Juan Rodríguez | .4803 | 1924 | |
| 71 | Jason Brown | .4802 | 1952 | |
| 72 | Jesse Warren | .4798 | 1941 | |
| 73 | George Walker | .4789 | 1929 | |
| 74 | George Calhoun | .4785 | 1931 | |
| 75 | Alfredo González | .4778 | 1947 | |
| 76 | Leroy Thompson | .4773 | 1947 | |
| 77 | Broderick Moore | .4772 | 1927 | |
| 78 | Harrison Burton | .4770 | 1930 | |
| 79 | Tomás Colón | .4766 | 1926 | |
| 80 | Sibrand Israel | .4765 | 1940 | |
| 80 | Alfredo González | .4765 | 1946 | |
| 82 | Roger Martin | .4762 | 1960 | |
| 83 | Knut Kurylowicz | .4757 | 1934 | |
| 84 | Mauro Machado | .4755 | 1944 | |
| 84 | Arthur Whittier | .4755 | 1937 | |
| 86 | Sansan Seixal | .4750 | 1935 | |
| 87 | Leroy Thompson | .4741 | 1950 | |
| 88 | Domingo Ríos | .4731 | 1942 | |
| 89 | Jesús Campos | .4730 | 1922 | |
| 90 | Jesse Warren | .4729 | 1942 | |
| 91 | Will Daniels | .4724 | 1936 | |
| 92 | Sean Descamps | .4722 | 1944 | |
| 92 | Ángel Mora | .4722 | 1930 | |
| 94 | Tommy Jones | .4720 | 1942 | |
| 95 | Roberto Hernández | .4719 | 1931 | |
| 96 | Joe Adams | .4718 | 1931 | |
| 97 | Edward Terry | .4715 | 1954 | |
| 98 | Jason Brown | .4713 | 1951 | |
| 99 | Nolan Little | .4710 | 1930 | |
| 100 | Jason Bean | .4709 | 1946 |
