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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | John Hukill* | .6622 | 2023 | |
| 2 | John Grondin* | .6229 | 2016 | |
| 3 | Terry Hubbard | .6178 | 2025 | |
| 4 | Andrés Velasco# | .6089 | 2021 | |
| 5 | Andrés Velasco# | .6083 | 2024 | |
| 6 | Mark Smith | .6027 | 2026 | |
| 7 | Andrés Velasco# | .6025 | 2025 | |
| 8 | John Grondin* | .5922 | 2015 | |
| 9 | George Labarre | .5852 | 2019 | |
| 10 | Terry Hubbard | .5833 | 2020 | |
| 11 | Terry Hubbard | .5726 | 2024 | |
| 12 | Sung-heun Hwa# | .5724 | 2029 | |
| 13 | Terry Hubbard | .5653 | 2021 | |
| 14 | Larry McCormick# | .5635 | 2023 | |
| 15 | Octavio Cabrales | .5618 | 2016 | |
| 16 | Katsuhiko Jouda | .5607 | 2027 | |
| 17 | Butch Patton | .5596 | 2026 | |
| 18 | Andrés Velasco# | .5589 | 2022 | |
| 19 | Larry McCormick# | .5569 | 2020 | |
| 20 | Eugene Alustiza | .5541 | 2013 | |
| 21 | Tom Taylor# | .5526 | 2033 | |
| 22 | John Hukill* | .5509 | 2024 | |
| 23 | Bruce Parker | .5498 | 2014 | |
| 24 | Bruce Parker | .5483 | 2018 | |
| 25 | Felipe Mendoza | .5473 | 2020 | |
| 26 | Gregorio Reyna | .5471 | 2018 | |
| 26 | António Venet# | .5471 | 2030 | |
| 28 | Octavio Cabrales | .5444 | 2015 | |
| 29 | Bruce Parker | .5440 | 2019 | |
| 30 | Andrés Velasco# | .5390 | 2027 | |
| 31 | Max Price# | .5383 | 2028 | |
| 32 | Andrés Velasco# | .5372 | 2019 | |
| 33 | Andrés Velasco# | .5363 | 2028 | |
| 34 | Larry McCormick# | .5345 | 2027 | |
| 35 | Chester Cohen | .5342 | 2013 | |
| 36 | Terry Hubbard | .5338 | 2026 | |
| 37 | John Grondin* | .5302 | 2014 | |
| 38 | Andrés Velasco# | .5292 | 2020 | |
| 39 | Kenneth Lea | .5279 | 2022 | |
| 40 | Sung-heun Hwa# | .5265 | 2028 | |
| 41 | António Venet# | .5211 | 2034 | |
| 42 | Andrés Velasco# | .5206 | 2017 | |
| 42 | Larry McCormick# | .5206 | 2025 | |
| 44 | Ronald Quijada | .5205 | 2017 | |
| 45 | Larry McCormick# | .5194 | 2021 | |
| 46 | Ronald Quijada | .5191 | 2015 | |
| 47 | Eugene Alustiza | .5159 | 2014 | |
| 47 | Albert Peavey | .5159 | 2015 | |
| 49 | Eugene Alustiza | .5147 | 2017 | |
| 50 | Bruce Parker | .5120 | 2013 | |
| 51 | Esteban Ordóńez | .5110 | 2023 | |
| 52 | Katsuhiko Jouda | .5102 | 2029 | |
| 53 | Andrés Velasco# | .5092 | 2018 | |
| 54 | Larry McCormick# | .5087 | 2024 | |
| 55 | Sung-heun Hwa# | .5062 | 2035 | |
| 56 | António Venet# | .5054 | 2029 | |
| 57 | Sung-heun Hwa# | .5051 | 2033 | |
| 58 | Sung-heun Hwa# | .5010 | 2030 | |
| 59 | Katsuhiko Jouda | .4992 | 2030 | |
| 60 | Eugene Alustiza | .4982 | 2015 | |
| 61 | Robert Fout | .4980 | 2013 | |
| 62 | Jason Lefebvre | .4951 | 2017 | |
| 63 | Kenneth Lea | .4914 | 2020 | |
| 64 | Mark Smith | .4898 | 2027 | |
| 65 | Felipe Mendoza | .4890 | 2019 | |
| 66 | Ronald Quijada | .4860 | 2020 | |
| 67 | Felipe Mendoza | .4849 | 2021 | |
| 68 | Ronald Quijada | .4843 | 2013 | |
| 69 | Richard Bender | .4826 | 2030 | |
| 70 | Luis Figueroa | .4812 | 2021 | |
| 71 | Tae-sang Pak# | .4802 | 2028 | |
| 72 | Gene Reynolds | .4772 | 2029 | |
| 73 | George Labarre | .4766 | 2018 | |
| 74 | Matt Stokes | .4754 | 2028 | |
| 75 | António Venet# | .4753 | 2033 | |
| 76 | Larry McCormick# | .4750 | 2026 | |
| 77 | Darryl Fuller# | .4749 | 2032 | |
| 78 | Júlio Quintana# | .4734 | 2033 | |
| 79 | Darryl Fuller# | .4728 | 2035 | |
| 80 | Andrés Velasco# | .4712 | 2029 | |
| 81 | António Venet# | .4710 | 2035 | |
| 82 | Luis Figueroa | .4691 | 2023 | |
| 83 | Esteban Ordóńez | .4662 | 2019 | |
| 84 | Bruce Parker | .4645 | 2021 | |
| 85 | Albert Peavey | .4639 | 2017 | |
| 86 | Kenneth Lea | .4624 | 2019 | |
| 87 | George Labarre | .4615 | 2016 | |
| 87 | Darryl Fuller# | .4615 | 2034 | |
| 89 | Larry McCormick# | .4608 | 2032 | |
| 90 | Darryl Fuller# | .4607 | 2033 | |
| 91 | Daniel Burdine | .4602 | 2016 | |
| 92 | Tom Taylor# | .4585 | 2034 | |
| 93 | Felipe Mendoza | .4582 | 2018 | |
| 94 | Bruce Parker | .4579 | 2015 | |
| 95 | Sung-heun Hwa# | .4577 | 2031 | |
| 95 | Joseph Barnett | .4577 | 2022 | |
| 97 | Bruce Parker | .4525 | 2017 | |
| 98 | António Venet# | .4520 | 2031 | |
| 99 | Esteban Ordóńez | .4519 | 2022 | |
| 100 | Tae-sang Pak# | .4504 | 2029 |
