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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | ERA | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Raúl Morán | 2.609 | 2039-2050 | |
| 2 | Olivier Martel | 2.806 | 2031-2042 | |
| 3 | Jeff Childress | 2.944 | 2039-2049 | |
| 4 | David Franklin | 3.024 | 2033-2041 | |
| 5 | Shih-k'ai Su-Tu | 3.069 | 2036-2047 | |
| 6 | Clive Smedley | 3.165 | 2026-2039 | |
| 7 | Michael Taylor | 3.191 | 2037-2046 | |
| 8 | Brady Walker | 3.235 | 2038-2045 | |
| 9 | Santiago Alonso | 3.247 | 2010-2015 | |
| 10 | Dan Gibson# | 3.253 | 2043-2051 | |
| 11 | Raymundo Vogado | 3.286 | 2038-2049 | |
| 12 | Juan Bonilla | 3.320 | 2031-2042 | |
| 13 | Craig Robinson | 3.334 | 2043-2047 | |
| 13 | Octávio Morales# | 3.334 | 2045-2051 | |
| 15 | William Brown | 3.369 | 2033-2038 | |
| 16 | Bryan Bradshaw | 3.383 | 2031-2043 | |
| 17 | Leonard Ralston | 3.390 | 2032-2047 | |
| 18 | Willis Hines | 3.415 | 2029-2037 | |
| 19 | Jud Bradford# | 3.438 | 2039-2051 | |
| 20 | Jorge Mendoza | 3.451 | 2038-2044 | |
| 21 | Bobby Sanders | 3.474 | 2028-2042 | |
| 22 | Grant Clark | 3.485 | 2029-2043 | |
| 23 | Elvis Warren | 3.526 | 2030-2041 | |
| 24 | Mario Contreras# | 3.541 | 2038-2051 | |
| 25 | Mark Clark | 3.544 | 2030-2048 | |
| 26 | Rod Duncan | 3.552 | 2043-2050 | |
| 27 | Clark Crawford | 3.553 | 2030-2038 | |
| 28 | Howard Parker# | 3.585 | 2044-2051 | |
| 29 | Isoruko Hayagawa# | 3.654 | 2044-2051 | |
| 30 | Carlos Montaño | 3.675 | 2040-2049 | |
| 31 | P.J. Lane | 3.681 | 2031-2039 | |
| 32 | Harry McCain | 3.715 | 2040-2048 | |
| 33 | Paul Ross | 3.733 | 2029-2040 | |
| 34 | Barrett Dobson | 3.734 | 2034-2041 | |
| 35 | Adam Berry | 3.742 | 2015-2025 | |
| 36 | Gavin Sarkies | 3.753 | 2033-2039 | |
| 37 | Dave Michael | 3.760 | 2030-2041 | |
| 38 | Ed Harris | 3.776 | 2018-2022 | |
| 39 | Eric Lewis | 3.804 | 2040-2050 | |
| 40 | Joe McCabe | 3.832 | 2033-2041 | |
| 41 | Chris Cochrane# | 3.836 | 2042-2051 | |
| 42 | Kelly Cooper | 3.859 | 2033-2041 | |
| 43 | Robert Collard | 3.870 | 2030-2046 | |
| 44 | Johnny Gaines | 3.892 | 2039-2044 | |
| 45 | Franklin Price | 3.932 | 2036-2043 | |
| 46 | Dave Lynch | 3.963 | 2035-2046 | |
| 47 | Wilbert Sutton | 4.004 | 2034-2040 | |
| 48 | Stan Long | 4.024 | 2025-2030 | |
| 49 | Bob Shaffer | 4.037 | 2029-2035 | |
| 50 | Jorge Gómez | 4.041 | 2034-2043 | |
| 51 | Michael Cater | 4.045 | 2042-2050 | |
| 52 | Bill Blair | 4.048 | 2025-2035 | |
| 53 | John Wilson | 4.067 | 2043-2047 | |
| 54 | Clint Smith | 4.073 | 2028-2037 | |
| 55 | Phil Jackson | 4.076 | 2027-2040 | |
| 56 | José Pacheco | 4.102 | 2029-2040 | |
| 57 | Takashi Yokoyama# | 4.114 | 2046-2051 | |
| 58 | Bill Morales | 4.141 | 2032-2037 | |
| 59 | Henry Valentine | 4.165 | 2021-2031 | |
| 60 | Wynn Thompson | 4.179 | 2020-2036 | |
| 61 | Ángel Cisneros | 4.189 | 2025-2035 | |
| 62 | Steve Lewis | 4.200 | 2025-2032 | |
| 63 | Raúl Medine | 4.235 | 2025-2037 | |
| 64 | Thatcher Norman | 4.255 | 2030-2039 | |
| 65 | Luis Pérez | 4.274 | 2021-2033 | |
| 66 | Tim Davis | 4.289 | 2016-2023 | |
| 67 | Patrick Davis | 4.382 | 2030-2041 | |
| 68 | Arnaldo Magaldi | 4.383 | 2011-2017 | |
| 69 | Juan Martínez | 4.443 | 2026-2033 | |
| 70 | Héctor Rodríguez | 4.465 | 2026-2034 | |
| 71 | Joe Hunt | 4.491 | 2026-2034 | |
| 72 | David White | 4.581 | 2031-2037 | |
| 73 | Olezka Elizarov | 4.629 | 2034-2045 | |
| 74 | Allen Amador | 4.726 | 2029-2037 | |
| 75 | Manuel Sánchez | 4.859 | 2035-2041 | |
| 76 | Frank Whitener | 5.563 | 2011-2017 |
