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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Season Leaderboard |
|---|---|---|---|---|
| 1 | Cedric Lever | .5874 | 1958-1973 | |
| 2 | Arnim Wille | .5640 | 1958-1977 | |
| 3 | Kuma Kikuchi | .5511 | 1970-1981 | |
| 4 | Bayles Blames* | .5385 | 1964-1973 | |
| 5 | Enrique Calderón | .5378 | 1958-1964 | |
| 6 | Roberto Ruíz | .5315 | 1973-1977 | |
| 7 | Arran MacCaw | .5152 | 1961-1973 | |
| 8 | Jorge Velásquez | .5060 | 1973-1977 | |
| 9 | Maup Kodde | .5046 | 1961-1967 | |
| 10 | Alfredo Bulat | .5000 | 1958-1961 | |
| 10 | Augusto Fo | .5000 | 1961-1970 | |
| 10 | Víctor Maldonado | .5000 | 1958-1970 | |
| 13 | Diego Barrios# | .4957 | 1981-1988 | |
| 14 | Boudewijn Adams | .4826 | 1958-1973 | |
| 15 | Edward Cruz# | .4822 | 1977-1988 | |
| 16 | Adum Olu | .4804 | 1970-1981 | |
| 17 | Cahern Walcker | .4800 | 1967-1984 | |
| 18 | Quincy Lukies | .4626 | 1964-1970 | |
| 19 | Gray Akerval | .4620 | 1964-1977 | |
| 20 | Soini Isomäki# | .4458 | 1977-1988 | |
| 21 | Myun-gu Chup | .4320 | 1958-1970 | |
| 22 | François Lasserre | .4309 | 1958-1964 | |
| 23 | Dáithí Sander | .4123 | 1958-1961 | |
| 24 | Sergio Acevedo | .4050 | 1958-1967 | |
| 25 | Masruq bin Dawud | .4000 | 1973-1977 | |
| 26 | Ryan Lacombe | .3966 | 1973-1984 | |
| 26 | Abdul-Nasser Wajeeh | .3966 | 1973-1977 | |
| 28 | Augusto Rea# | .3961 | 1981-1988 | |
| 29 | Kalervo Reini# | .3916 | 1981-1988 | |
| 30 | Afework Waziri | .3818 | 1964-1981 | |
| 31 | Alfonso Romo | .3806 | 1961-1970 | |
| 32 | José Pérez# | .3750 | 1981-1988 | |
| 33 | Pim Deschamps | .3679 | 1958-1970 | |
| 34 | Faqih bin Abbud | .3648 | 1973-1988 | |
| 35 | Albert Vincent | .3393 | 1964-1970 | |
| 36 | Raúl Escobar | .3333 | 1964-1977 | |
| 37 | Barnabas Stahlecker | .3289 | 1973-1988 | |
| 38 | Francisco Marrero# | .3148 | 1977-1988 | |
| 39 | Marcos Fernández | .3025 | 1970-1973 | |
| 40 | Habib Jibril | .3000 | 1973-1981 | |
| 41 | Will Docking | .2946 | 1970-1988 | |
| 42 | Carlos Ramírez | .2917 | 1973-1988 | |
| 43 | Cary Dickman# | .2719 | 1977-1988 | |
| 44 | Armando González | .2158 | 1961-1970 | |
| 45 | Ubbe Ulderink# | .1988 | 1981-1988 | |
| 46 | Mario López | .1959 | 1981-1984 | |
| 47 | Ghaysun Gurnah | .1678 | 1973-1984 |
