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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Allan Houston# | .6377 | 1957 | |
| 2 | Gene Metcalf* | .6183 | 1937 | |
| 3 | Mitchell Decker* | .6158 | 1947 | |
| 4 | Mitchell Decker* | .6127 | 1949 | |
| 5 | Allan Houston# | .6098 | 1953 | |
| 6 | Allan Houston# | .5991 | 1959 | |
| 7 | Mitchell Decker* | .5899 | 1946 | |
| 8 | Allan Houston# | .5813 | 1955 | |
| 9 | Joe Rafferty# | .5747 | 1963 | |
| 10 | Harry Osborn | .5731 | 1948 | |
| 11 | Fennimore McCaffree* | .5691 | 1922 | |
| 12 | Tom Dillard* | .5688 | 1957 | |
| 13 | Mitchell Decker* | .5619 | 1948 | |
| 14 | Marty Reynolds | .5606 | 1953 | |
| 15 | Joe Rafferty# | .5571 | 1957 | |
| 16 | Jack Grenier | .5567 | 1930 | |
| 17 | Fennimore McCaffree* | .5548 | 1928 | |
| 18 | Matt Rooney | .5521 | 1925 | |
| 19 | Joe Rafferty# | .5512 | 1960 | |
| 20 | Gene Metcalf* | .5489 | 1936 | |
| 21 | Joe Rafferty# | .5461 | 1958 | |
| 22 | Gene Metcalf* | .5418 | 1941 | |
| 23 | Bob Jones | .5417 | 1958 | |
| 24 | Don Green* | .5376 | 1947 | |
| 25 | Harry Osborn | .5373 | 1957 | |
| 26 | Joe Rafferty# | .5371 | 1964 | |
| 27 | Don Green* | .5366 | 1949 | |
| 28 | Mel Harrison | .5364 | 1929 | |
| 29 | Claud Hensley | .5343 | 1924 | |
| 30 | Mark Rosenberg# | .5335 | 1962 | |
| 30 | Don Green* | .5335 | 1952 | |
| 30 | Steve Henderson | .5335 | 1951 | |
| 33 | Bill Fulton# | .5325 | 1954 | |
| 34 | Alan Weston* | .5320 | 1942 | |
| 35 | Harry Osborn | .5311 | 1954 | |
| 36 | Harry Osborn | .5309 | 1955 | |
| 37 | Bill Fulton# | .5292 | 1960 | |
| 38 | Claud Hensley | .5288 | 1922 | |
| 39 | Gene Metcalf* | .5280 | 1934 | |
| 40 | Harry Osborn | .5273 | 1950 | |
| 41 | Allan Houston# | .5258 | 1958 | |
| 42 | Gene Metcalf* | .5253 | 1935 | |
| 43 | Bill Fulton# | .5237 | 1955 | |
| 44 | Harry Osborn | .5216 | 1953 | |
| 45 | Claud Hensley | .5215 | 1920 | |
| 46 | Fennimore McCaffree* | .5202 | 1923 | |
| 46 | Joe Rafferty# | .5202 | 1966 | |
| 48 | Chuck Divine | .5201 | 1951 | |
| 49 | Ed Potthast | .5199 | 1941 | |
| 50 | Steve Henderson | .5193 | 1953 | |
| 51 | Lew Lydell | .5191 | 1935 | |
| 52 | Mitchell Decker* | .5189 | 1950 | |
| 52 | Edmund Godfrey* | .5189 | 1901 | |
| 54 | Victor Rojas | .5177 | 1954 | |
| 55 | Matt Rooney | .5173 | 1924 | |
| 56 | Fennimore McCaffree* | .5172 | 1921 | |
| 57 | Tom Riley | .5170 | 1938 | |
| 58 | Claud Hensley | .5139 | 1925 | |
| 59 | Alan Weston* | .5138 | 1953 | |
| 60 | Chuck Divine | .5131 | 1950 | |
| 61 | Don Green* | .5119 | 1950 | |
| 62 | Alan Weston* | .5114 | 1939 | |
| 62 | Mel Harrison | .5114 | 1930 | |
| 64 | Mitchell Decker* | .5113 | 1951 | |
| 65 | Fennimore McCaffree* | .5111 | 1920 | |
| 66 | Matt Rooney | .5104 | 1930 | |
| 67 | Gene Metcalf* | .5103 | 1940 | |
| 67 | Chief Ward | .5103 | 1932 | |
| 69 | Matt Rooney | .5087 | 1926 | |
| 70 | Ed Watts | .5085 | 1929 | |
| 71 | Gene Metcalf* | .5083 | 1939 | |
| 72 | Bob Jones | .5063 | 1957 | |
| 73 | Pepper Wirtz | .5055 | 1939 | |
| 74 | Marty Reynolds | .5052 | 1948 | |
| 75 | Tom Riley | .5045 | 1934 | |
| 76 | Roy Caputo | .5041 | 1940 | |
| 77 | Randy Paterson# | .5032 | 1961 | |
| 78 | Ed Watts | .5029 | 1930 | |
| 79 | Gene Metcalf* | .5017 | 1938 | |
| 80 | Woody Winthrop | .5016 | 1921 | |
| 81 | Matt Rooney | .5009 | 1929 | |
| 82 | Pepper Wirtz | .5008 | 1940 | |
| 82 | Woody Winthrop | .5008 | 1926 | |
| 84 | Bill Smith | .5000 | 1887 | |
| 85 | Bob Jones | .4992 | 1956 | |
| 86 | Tom Riley | .4991 | 1939 | |
| 87 | Ed Potthast | .4981 | 1938 | |
| 88 | Billy West | .4977 | 1951 | |
| 89 | Fennimore McCaffree* | .4975 | 1924 | |
| 90 | Alan Weston* | .4952 | 1940 | |
| 91 | Roy Caputo | .4951 | 1939 | |
| 92 | Fennimore McCaffree* | .4944 | 1919 | |
| 93 | Ed Potthast | .4937 | 1940 | |
| 94 | Joe Voss# | .4934 | 1967 | |
| 95 | Reid Wysocki | .4926 | 1956 | |
| 96 | Matt Rooney | .4921 | 1931 | |
| 97 | Tom Riley | .4920 | 1940 | |
| 98 | Chief Ward | .4908 | 1928 | |
| 98 | Alec Gleason | .4908 | 1921 | |
| 100 | Don Green* | .4903 | 1946 |
