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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Stephen Langdon* | .6612 | 1955 | |
| 2 | Anzai Yamasaki | .6322 | 1960 | |
| 3 | Isaac Gedge# | .6262 | 1988 | |
| 4 | Moritz Noordervliet | .6067 | 1938 | |
| 5 | Aidan Naysmith* | .5724 | 1969 | |
| 6 | Aidan Naysmith* | .5719 | 1964 | |
| 7 | Clement Powers | .5635 | 1958 | |
| 8 | Clement Powers | .5604 | 1961 | |
| 9 | Mujahid bin Bahir | .5603 | 1981 | |
| 10 | Mike Fitzpatrick | .5559 | 1982 | |
| 11 | Mujahid bin Bahir | .5543 | 1976 | |
| 12 | Moritz Noordervliet | .5538 | 1939 | |
| 13 | Pancho Ramírez | .5517 | 1987 | |
| 14 | Aidan Naysmith* | .5502 | 1975 | |
| 15 | Moritz Noordervliet | .5466 | 1940 | |
| 16 | Tomás Colón | .5433 | 1937 | |
| 17 | Tony Walter | .5413 | 1937 | |
| 17 | Aidan Naysmith* | .5413 | 1965 | |
| 19 | Jesús Rosas | .5396 | 1961 | |
| 20 | Niel Tarnovius | .5394 | 1974 | |
| 21 | Pedro García | .5335 | 1976 | |
| 22 | Pancho Ramírez | .5308 | 1980 | |
| 23 | Pedro Quintana# | .5299 | 1988 | |
| 24 | Mike Crum# | .5287 | 1988 | |
| 25 | Bob Thurman | .5278 | 1929 | |
| 26 | Evan Bennie# | .5260 | 1990 | |
| 27 | Archie Crockford | .5248 | 1947 | |
| 28 | Clement Powers | .5219 | 1959 | |
| 29 | Jorge Delgado | .5193 | 1958 | |
| 30 | Raúl Ramírez | .5168 | 1938 | |
| 31 | Aidan Naysmith* | .5129 | 1974 | |
| 32 | Raúl Ramírez | .5106 | 1934 | |
| 33 | Rafael González | .5096 | 1966 | |
| 34 | Evan Bennie# | .5088 | 1988 | |
| 35 | Stephen Sampson# | .5020 | 1987 | |
| 35 | Raúl Ramírez | .5020 | 1932 | |
| 37 | Román Martínez* | .5018 | 1940 | |
| 38 | Danya Danisevich# | .4983 | 1986 | |
| 39 | Fernando Ornelas | .4936 | 1982 | |
| 40 | Johnny De La Rosa | .4927 | 1942 | |
| 41 | Norman McElrath | .4883 | 1946 | |
| 42 | Jesús Rosas | .4872 | 1959 | |
| 42 | Arthur Tilley# | .4872 | 1988 | |
| 44 | Jun-hyuk Kim | .4829 | 1958 | |
| 45 | Pancho Ramírez | .4813 | 1982 | |
| 46 | Rafael González | .4811 | 1963 | |
| 47 | Román Martínez* | .4784 | 1941 | |
| 48 | Aidan Naysmith* | .4779 | 1968 | |
| 49 | Jesús Rosas | .4764 | 1960 | |
| 50 | Aidan Naysmith* | .4749 | 1962 | |
| 51 | Stephen Sampson# | .4742 | 1984 | |
| 52 | Pedro García | .4739 | 1975 | |
| 53 | Evan Bennie# | .4710 | 1989 | |
| 54 | Diego Hernández# | .4706 | 1990 | |
| 55 | Herman Frankenheimer | .4704 | 1980 | |
| 56 | Mike Bush | .4689 | 1966 | |
| 57 | Jesús Rivera | .4664 | 1987 | |
| 58 | Spencer Young | .4658 | 1964 | |
| 59 | Mike Fitzpatrick | .4655 | 1981 | |
| 60 | Alfie Furzer | .4654 | 1965 | |
| 61 | Román Martínez* | .4647 | 1935 | |
| 62 | Sal Buckner | .4646 | 1941 | |
| 63 | Mike Crum# | .4641 | 1987 | |
| 64 | Fernando Ornelas | .4640 | 1985 | |
| 65 | Samuel Elphinstone | .4630 | 1946 | |
| 66 | Rafael González | .4623 | 1965 | |
| 67 | Louis Lenton | .4618 | 1953 | |
| 68 | Juan Hernández | .4607 | 1951 | |
| 69 | Niel Tarnovius | .4606 | 1972 | |
| 70 | Fernando Ornelas | .4595 | 1981 | |
| 71 | Pedro García | .4590 | 1983 | |
| 72 | Aidan Naysmith* | .4579 | 1963 | |
| 73 | Stephen Langdon* | .4559 | 1959 | |
| 73 | Jun-hyuk Kim | .4559 | 1959 | |
| 75 | Mathias Seiler# | .4556 | 1990 | |
| 76 | Pedro Quintana# | .4545 | 1987 | |
| 77 | Norman McElrath | .4515 | 1950 | |
| 78 | Jun-hyuk Kim | .4508 | 1960 | |
| 79 | Danya Danisevich# | .4502 | 1987 | |
| 80 | Pancho Ramírez | .4495 | 1983 | |
| 81 | Er Fen | .4490 | 1966 | |
| 82 | Román Martínez* | .4488 | 1945 | |
| 83 | Román Martínez* | .4487 | 1946 | |
| 84 | Sam White | .4484 | 1951 | |
| 85 | Pancho Ramírez | .4478 | 1981 | |
| 86 | Charles Ball# | .4460 | 1985 | |
| 87 | Louis Lenton | .4455 | 1946 | |
| 88 | Ayyub bin Subhi | .4444 | 1984 | |
| 88 | Mario López | .4444 | 1974 | |
| 90 | Norman McElrath | .4420 | 1945 | |
| 91 | Jesse Jackson | .4412 | 1953 | |
| 92 | Yoelbi Fresneda* | .4411 | 1942 | |
| 93 | Arturo Torres | .4400 | 1969 | |
| 94 | Yoelbi Fresneda* | .4399 | 1944 | |
| 94 | Stephen Sampson# | .4399 | 1986 | |
| 96 | Bernard Perrin* | .4394 | 1953 | |
| 97 | Mujahid bin Bahir | .4392 | 1979 | |
| 98 | Pancho Ramírez | .4377 | 1979 | |
| 99 | Mike Crum# | .4375 | 1986 | |
| 100 | Román Martínez* | .4369 | 1934 |
