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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Bruce Stewart | .5247 | 1931 | |
| 2 | Robert Cox | .5235 | 1937 | |
| 3 | Juan Valdiva | .5126 | 1939 | |
| 4 | Gavin Banks | .5063 | 1945 | |
| 5 | Roberto Díaz | .4976 | 1943 | |
| 6 | Juan Serrano | .4970 | 1911 | |
| 7 | Leonard Werner# | .4917 | 1975 | |
| 8 | Juan Rosas | .4909 | 1941 | |
| 9 | Frank Mason | .4889 | 1943 | |
| 10 | Jeremy Moore | .4867 | 1942 | |
| 11 | Truman Conrad | .4851 | 1935 | |
| 12 | Michael Henderson | .4841 | 1936 | |
| 13 | Roberto Villanueva | .4839 | 1940 | |
| 14 | Leslie LeBlanc | .4836 | 1932 | |
| 15 | Maxwell Carlson | .4823 | 1942 | |
| 16 | Arthur Thompson | .4807 | 1944 | |
| 17 | Javier Figueroa | .4784 | 1937 | |
| 18 | Frank Mason | .4783 | 1944 | |
| 19 | Javier Figueroa | .4772 | 1938 | |
| 20 | Ernesto Mendoza | .4737 | 1946 | |
| 21 | Arturo Pacheco | .4724 | 1946 | |
| 22 | Jason Roux | .4722 | 1934 | |
| 23 | Javier Figueroa | .4713 | 1936 | |
| 24 | Mike Lajoie | .4708 | 1935 | |
| 25 | Sandy Cuevas | .4706 | 1939 | |
| 26 | John Martin | .4690 | 1935 | |
| 27 | Sandy Cuevas | .4678 | 1937 | |
| 28 | Shawn McCoy | .4674 | 1944 | |
| 29 | Juan Valdiva | .4644 | 1940 | |
| 30 | Raúl Mendoza | .4635 | 1944 | |
| 31 | Aloysius Hope | .4630 | 1923 | |
| 32 | Miguel Rodríguez | .4622 | 1931 | |
| 33 | Jason Roux | .4601 | 1935 | |
| 34 | Cristián Andrés | .4578 | 1932 | |
| 35 | Leslie LeBlanc | .4563 | 1934 | |
| 36 | Paul Owens | .4554 | 1946 | |
| 37 | Roberto Bernard | .4541 | 1939 | |
| 38 | Joe Vance | .4516 | 1925 | |
| 39 | Shawn McCoy | .4514 | 1945 | |
| 40 | Aloysius Hope | .4510 | 1922 | |
| 40 | Javier Figueroa | .4510 | 1939 | |
| 42 | Leonard Werner# | .4508 | 1974 | |
| 43 | José Enríquez | .4498 | 1941 | |
| 43 | Carlos Fernández | .4498 | 1947 | |
| 45 | Jason Roux | .4459 | 1933 | |
| 46 | Manny Onelas | .4440 | 1928 | |
| 47 | Miguel Rodríguez | .4432 | 1930 | |
| 48 | Ray Brown | .4425 | 1916 | |
| 48 | John Holmstrom# | .4425 | 1982 | |
| 50 | Mike Lajoie | .4424 | 1934 | |
| 51 | Bruce Stewart | .4423 | 1932 | |
| 52 | José Enríquez | .4408 | 1942 | |
| 53 | Toby Hammond | .4407 | 1924 | |
| 54 | Armando Gonzáles | .4403 | 1947 | |
| 55 | Cody Robbins | .4393 | 1915 | |
| 56 | Sandy Cuevas | .4389 | 1936 | |
| 57 | Mike Lajoie | .4383 | 1933 | |
| 58 | Michael Henderson | .4382 | 1937 | |
| 59 | Francisco García | .4370 | 1943 | |
| 60 | Mike Dempsey | .4368 | 1926 | |
| 61 | Claudio Valdéz | .4364 | 1928 | |
| 62 | Pancho Romero | .4358 | 1938 | |
| 63 | Mike Johnson | .4355 | 1925 | |
| 64 | Bernardo Carrión | .4348 | 1975 | |
| 65 | Miguel Maldonado | .4336 | 1929 | |
| 66 | Joe Vance | .4333 | 1923 | |
| 67 | Miguel Maldonado | .4328 | 1928 | |
| 68 | Juan Rosas | .4323 | 1940 | |
| 69 | Héctor López | .4317 | 1931 | |
| 70 | Gregory Green | .4315 | 1931 | |
| 71 | Scott Combs | .4313 | 1942 | |
| 72 | Ernesto Mendoza | .4310 | 1947 | |
| 73 | Gregory McGhee | .4309 | 1919 | |
| 74 | Luis Martínez | .4306 | 1922 | |
| 75 | Jeff Clark | .4304 | 1924 | |
| 76 | José Enríquez | .4302 | 1943 | |
| 77 | Vincent Owens | .4293 | 1934 | |
| 78 | Larry Armstrong | .4286 | 1915 | |
| 78 | Jeremy Moore | .4286 | 1943 | |
| 80 | Joe Vance | .4280 | 1924 | |
| 81 | Jessie Thomas | .4277 | 1922 | |
| 82 | Pedro Manuel | .4268 | 1929 | |
| 83 | Mark Clarke | .4263 | 1918 | |
| 84 | Josh Lancaster | .4241 | 1924 | |
| 85 | Mike Dempsey | .4237 | 1927 | |
| 86 | Charles Derdire | .4229 | 1931 | |
| 87 | Kevin Burt | .4227 | 1945 | |
| 88 | Claudio Valdéz | .4225 | 1930 | |
| 89 | Bruce Stewart | .4224 | 1930 | |
| 90 | Leslie LeBlanc | .4222 | 1935 | |
| 91 | Juan Valdiva | .4220 | 1941 | |
| 92 | Miguel Maldonado | .4215 | 1927 | |
| 93 | Zach Morgan | .4207 | 1941 | |
| 94 | Leslie LeBlanc | .4205 | 1936 | |
| 95 | Héctor López | .4201 | 1929 | |
| 96 | John Martin | .4200 | 1934 | |
| 97 | Gabriel González | .4192 | 1920 | |
| 98 | Juan Valdiva | .4190 | 1942 | |
| 99 | Sandy Cuevas | .4177 | 1938 | |
| 100 | Héctor López | .4174 | 1928 |
