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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Mathias Albertoni* | .7598 | 1950 | |
| 2 | Félix Salinas | .6488 | 1950 | |
| 3 | Steve Lee | .6190 | 1950 | |
| 4 | Austin Johnson | .5973 | 1950 | |
| 5 | Chad Harper | .5963 | 1950 | |
| 6 | Raúl Ayers | .5794 | 1950 | |
| 7 | Robert Cox | .5657 | 1935 | |
| 8 | Rob Ash | .5536 | 1929 | |
| 9 | Odmar Olthof | .5531 | 1918 | |
| 10 | John Lindsley | .5475 | 1950 | |
| 11 | Mark McCoy | .5464 | 1924 | |
| 12 | Andrew Wood | .5439 | 1950 | |
| 13 | António Toro | .5424 | 1928 | |
| 14 | Rob Ash | .5423 | 1930 | |
| 15 | Steve Williams | .5420 | 1919 | |
| 16 | Miguel Borbón | .5417 | 1923 | |
| 16 | Martin Brown | .5417 | 1942 | |
| 18 | Daron McGill | .5407 | 1924 | |
| 19 | Jen-djieh Kwan | .5370 | 1950 | |
| 20 | Rob Ash | .5352 | 1927 | |
| 21 | Félix Mansanarez | .5313 | 1940 | |
| 22 | Miguel Borbón | .5281 | 1922 | |
| 23 | Robert Cox | .5271 | 1936 | |
| 24 | Cliff Moore | .5263 | 1947 | |
| 25 | Artie Oliveira | .5255 | 1945 | |
| 26 | Anthony Lamb | .5250 | 1935 | |
| 26 | Pablo González | .5250 | 1945 | |
| 28 | Robert Cox | .5224 | 1934 | |
| 29 | Odmar Olthof | .5213 | 1919 | |
| 30 | Mathias Albertoni* | .5211 | 1947 | |
| 30 | Abraham Jones | .5211 | 1922 | |
| 32 | Orlando Benítez | .5200 | 1946 | |
| 33 | Ricardo Pizzonia | .5187 | 1929 | |
| 34 | Abraham Jones | .5161 | 1923 | |
| 35 | Armando Cervantes | .5159 | 1944 | |
| 36 | Kevin Morris | .5148 | 1958 | |
| 37 | Doyle Walton | .5141 | 1912 | |
| 38 | Pat Hester | .5135 | 1935 | |
| 39 | George Perry | .5134 | 1932 | |
| 40 | Jay Allen# | .5119 | 1989 | |
| 41 | Jay Allen# | .5115 | 1988 | |
| 42 | Christian Bradshaw | .5109 | 1945 | |
| 43 | Josh Joyce | .5092 | 1927 | |
| 44 | Bill Hicks | .5088 | 1925 | |
| 45 | Ken Thursley | .5087 | 1968 | |
| 46 | Johnny Rodríguez | .5083 | 1937 | |
| 47 | Connor Cochran | .5079 | 1956 | |
| 48 | David House | .5076 | 1935 | |
| 49 | Tom Craig | .5075 | 1931 | |
| 50 | Rob Ash | .5053 | 1928 | |
| 51 | Pedro Rodríguez | .5051 | 1941 | |
| 52 | Dave Shafer | .5050 | 1946 | |
| 53 | Pablo González | .5048 | 1942 | |
| 54 | Juan Marín | .5025 | 1950 | |
| 54 | Stan O'Rourke | .5025 | 1939 | |
| 56 | Millard Montgomery | .5024 | 1967 | |
| 57 | Juan López | .5000 | 1964 | |
| 57 | Félix Mansanarez | .5000 | 1938 | |
| 57 | Dave West | .5000 | 1933 | |
| 57 | Roland Thomas | .5000 | 1924 | |
| 57 | Paul Green | .5000 | 1946 | |
| 57 | John Lindsley | .5000 | 1952 | |
| 63 | Kevin Morris | .4974 | 1957 | |
| 63 | Martin Jordan | .4974 | 1962 | |
| 63 | Duane Thompson | .4974 | 1934 | |
| 66 | Rubén Ramírez | .4960 | 1946 | |
| 67 | Cisco Flores | .4949 | 1933 | |
| 68 | Pablo González | .4947 | 1943 | |
| 68 | Christian Bradshaw | .4947 | 1942 | |
| 70 | José Lieftinck | .4946 | 1946 | |
| 70 | Martin Jordan | .4946 | 1963 | |
| 72 | James Williams | .4937 | 1937 | |
| 73 | Pete Peterson | .4928 | 1954 | |
| 74 | Maurice Olsen | .4926 | 1950 | |
| 75 | Martin Jordan | .4919 | 1965 | |
| 76 | Norris Andrews | .4913 | 1936 | |
| 77 | Andrew Wood | .4901 | 1952 | |
| 78 | Luis Esparza | .4899 | 1940 | |
| 79 | Ramón Díaz | .4891 | 1941 | |
| 80 | Jesús Montés | .4886 | 1941 | |
| 81 | Edgardo Rojas | .4877 | 1932 | |
| 82 | Richard Dennis | .4870 | 1982 | |
| 83 | Robert Cox | .4869 | 1933 | |
| 84 | Shawn Roberts | .4860 | 1945 | |
| 85 | Ted Holcomb | .4857 | 1947 | |
| 86 | Pedro Rodríguez | .4840 | 1939 | |
| 87 | Josh Joyce | .4835 | 1930 | |
| 88 | Gene Davis | .4833 | 1947 | |
| 89 | Austin Johnson | .4826 | 1951 | |
| 90 | Doyle Walton | .4825 | 1911 | |
| 91 | Felipe Sapiens | .4821 | 1939 | |
| 92 | Denver Nelson | .4815 | 1927 | |
| 92 | Jack Harris | .4815 | 1944 | |
| 94 | Michael McCoy | .4813 | 1943 | |
| 95 | Kane Warwick | .4804 | 1954 | |
| 96 | Clayton Leonard | .4798 | 1936 | |
| 97 | Jack Harris | .4789 | 1943 | |
| 98 | Brent Hudson# | .4787 | 1980 | |
| 99 | Nate Baker | .4786 | 1923 | |
| 100 | Rex White | .4780 | 1955 |
