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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Mathias Albertoni* | .5349 | 1947-1950 | |
| 2 | Rick Steward | .5327 | 1950-1953 | |
| 3 | Robert Cox | .5259 | 1933-1936 | |
| 4 | Dylan Aston | .5221 | 1934-1937 | |
| 5 | Dave Hampton | .5105 | 1933-1936 | |
| 6 | Jeff Giles | .5076 | 1950-1953 | |
| 7 | Austin Johnson | .5059 | 1950-1953 | |
| 8 | Matt Wood | .5057 | 1950-1953 | |
| 9 | Enrique López | .5019 | 1940-1943 | |
| 10 | Shahnawaz Mirza | .4987 | 1942-1945 | |
| 11 | Mario Toro | .4968 | 1935-1938 | |
| 12 | Brian Johnson | .4947 | 1937-1940 | |
| 13 | Aurelio Hernández* | .4911 | 1954-1957 | |
| 14 | Mark Richardson | .4886 | 1950-1953 | |
| 15 | Javier Negrete | .4881 | 1957-1960 | |
| 16 | Pedro Oporta | .4879 | 1939-1942 | |
| 17 | Lodewijk Hawley | .4873 | 1942-1945 | |
| 18 | Hadde Ippel | .4844 | 1950-1953 | |
| 19 | Lorenzo Mercado | .4830 | 1941-1944 | |
| 20 | José Sandoval | .4820 | 1954-1957 | |
| 21 | Aaron Conley | .4817 | 1935-1938 | |
| 22 | Félix Mansanarez | .4810 | 1938-1941 | |
| 23 | Martin Jordan | .4809 | 1962-1965 | |
| 24 | Erik Melton | .4781 | 1935-1938 | |
| 25 | Ed St. John | .4755 | 1937-1940 | |
| 26 | Richard Rowland | .4740 | 1943-1946 | |
| 27 | Stan O'Rourke | .4726 | 1937-1940 | |
| 28 | Johnny Rodríguez | .4710 | 1937-1940 | |
| 29 | Jesse Warren | .4707 | 1941-1944 | |
| 30 | Marcos Vargas | .4706 | 1942-1945 | |
| 31 | Martin Colbert | .4683 | 1926-1929 | |
| 32 | Luke Peters | .4679 | 1933-1936 | |
| 33 | Joe Davis | .4665 | 1938-1941 | |
| 34 | George Barlow | .4661 | 1942-1945 | |
| 35 | Samuel Bramati | .4655 | 1934-1937 | |
| 36 | Al Maloney | .4653 | 1935-1938 | |
| 37 | Frank Bailey | .4651 | 1943-1946 | |
| 38 | Javier Salazar | .4642 | 1950-1953 | |
| 39 | Clement Powers | .4606 | 1937-1940 | |
| 40 | Matt Crowther | .4599 | 1949-1952 | |
| 41 | António Rivera | .4595 | 1938-1941 | |
| 42 | Cody Ruffin | .4582 | 1949-1952 | |
| 43 | Joe Martin | .4581 | 1942-1945 | |
| 43 | Riley Wells | .4581 | 1937-1940 | |
| 45 | Sotan Wakabayashi | .4565 | 1942-1945 | |
| 46 | Héctor Alemán | .4559 | 1953-1956 | |
| 47 | Ray Keating | .4558 | 1938-1941 | |
| 48 | Travis Brown | .4547 | 1947-1950 | |
| 49 | Hugh Davis | .4530 | 1937-1940 | |
| 50 | Marc Reed | .4529 | 1966-1969 | |
| 51 | Wyatt Newman | .4524 | 1954-1957 | |
| 52 | Ambrose Land | .4506 | 1939-1942 | |
| 53 | Wen-hua Lundgren | .4489 | 1933-1936 | |
| 54 | Vincent French | .4477 | 1934-1937 | |
| 55 | Robbie Moore | .4474 | 1934-1937 | |
| 56 | Luis Esparza | .4472 | 1937-1940 | |
| 57 | Raúl Rúbio | .4471 | 1935-1938 | |
| 58 | Cong Hua | .4470 | 1938-1941 | |
| 59 | Colin Wilkins | .4459 | 1954-1957 | |
| 60 | Jon Murphy | .4455 | 1949-1952 | |
| 61 | Ronald Stewart | .4449 | 1933-1936 | |
| 62 | Mike Jacobs | .4443 | 1926-1929 | |
| 63 | Barry Hoffman | .4440 | 1938-1941 | |
| 64 | Howard Lawrence | .4436 | 1937-1940 | |
| 65 | Dan Dethridge | .4434 | 1933-1936 | |
| 66 | Claudio Moreno | .4432 | 1948-1951 | |
| 67 | Millard Montgomery | .4430 | 1965-1968 | |
| 68 | Michael Barlow | .4429 | 1953-1956 | |
| 68 | Billy Ray | .4429 | 1939-1942 | |
| 70 | Josh Thompson | .4423 | 1959-1962 | |
| 71 | Pedro Cruz | .4418 | 1941-1944 | |
| 72 | Clayton Leonard | .4411 | 1934-1937 | |
| 73 | Rex Baldwin | .4405 | 1964-1967 | |
| 74 | Jamie Jones | .4399 | 1938-1941 | |
| 75 | Curt Brown | .4397 | 0-0 | |
| 76 | Ricardo Morales | .4383 | 1963-1966 | |
| 77 | Brennan MacFadden | .4376 | 1927-1930 | |
| 78 | Germán Taváres | .4371 | 1938-1941 | |
| 79 | Paul Wilson | .4367 | 1941-1944 | |
| 80 | Gene Clifton | .4355 | 1942-1945 | |
| 81 | Steve Lee | .4350 | 1948-1951 | |
| 82 | Louie Hood | .4346 | 1934-1937 | |
| 83 | Eugene Henderson | .4339 | 1959-1962 | |
| 84 | Elton Kenney | .4336 | 1934-1937 | |
| 85 | Mark Wilson | .4323 | 1944-1947 | |
| 86 | Roberto Murillo | .4315 | 1933-1936 | |
| 87 | Artie Oliveira | .4310 | 1945-1948 | |
| 88 | David Marino | .4306 | 1950-1953 | |
| 89 | Tommy Gove | .4301 | 1949-1952 | |
| 90 | Francisco Hidalgo | .4295 | 1927-1930 | |
| 91 | Arthur Martínez | .4289 | 1939-1942 | |
| 92 | Len Fanner# | .4286 | 1980-1983 | |
| 93 | Brian Pope | .4280 | 1934-1937 | |
| 94 | Ronnie Edwards | .4272 | 1938-1941 | |
| 95 | Chuck Bowman | .4271 | 1962-1965 | |
| 96 | Ed Smith | .4265 | 1967-1970 | |
| 97 | Edgardo Galló | .4248 | 1926-1929 | |
| 98 | Rafael Guerrero | .4247 | 1959-1962 | |
| 99 | Fred Walker# | .4232 | 1984-1987 | |
| 100 | Dave Taylor | .4215 | 1926-1929 |
