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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Joe Welch | .6364 | 1929 | |
| 2 | T.R. Goins* | .6123 | 1929 | |
| 3 | Joe Welch | .5944 | 1930 | |
| 4 | Paul Tattersall | .5795 | 1921 | |
| 5 | T.R. Goins* | .5778 | 1926 | |
| 6 | Jim Pool | .5763 | 1929 | |
| 7 | George Cary | .5714 | 1903 | |
| 8 | T.R. Goins* | .5711 | 1925 | |
| 9 | Chuck Embry | .5692 | 1882 | |
| 10 | John Wicklund | .5675 | 1935 | |
| 11 | Sam Sanderson | .5629 | 1921 | |
| 12 | T.R. Goins* | .5544 | 1931 | |
| 13 | Tom Bird* | .5523 | 1937 | |
| 14 | Claude Jones | .5502 | 1894 | |
| 15 | Tom Bird* | .5501 | 1938 | |
| 16 | Mike Taylor | .5456 | 1929 | |
| 17 | George Cleaves* | .5414 | 1939 | |
| 18 | T.R. Goins* | .5402 | 1924 | |
| 19 | T.R. Goins* | .5369 | 1930 | |
| 20 | Claude Jones | .5337 | 1896 | |
| 21 | Roger Cleaves | .5335 | 1947 | |
| 22 | Dutch Miller# | .5271 | 1954 | |
| 23 | Paul Tattersall | .5268 | 1922 | |
| 24 | Paul Tattersall | .5259 | 1923 | |
| 25 | Sam Walker# | .5256 | 1958 | |
| 26 | Pete Casstevens | .5233 | 1950 | |
| 27 | Frank Sobreville | .5216 | 1884 | |
| 28 | Mike Taylor | .5183 | 1932 | |
| 29 | Michael Colman | .5134 | 1889 | |
| 30 | George Cleaves* | .5127 | 1950 | |
| 31 | T.R. Goins* | .5123 | 1934 | |
| 32 | Dick Hunt# | .5084 | 1958 | |
| 33 | Al Lowther | .5079 | 1878 | |
| 34 | Bill Watson | .5069 | 1903 | |
| 35 | Tom Bird* | .5068 | 1939 | |
| 36 | Claude Jones | .5052 | 1895 | |
| 37 | Sam Walker# | .5046 | 1955 | |
| 38 | Jim Pool | .5009 | 1930 | |
| 39 | Carl Ames | .5000 | 1930 | |
| 39 | Roger Cleaves | .5000 | 1950 | |
| 39 | T.R. Goins* | .5000 | 1936 | |
| 42 | Mickey Dowell | .4972 | 1926 | |
| 43 | Frank Sobreville | .4964 | 1890 | |
| 44 | Hal Kennedy# | .4956 | 1958 | |
| 44 | Joe Owns | .4956 | 1882 | |
| 46 | Lew Mercer# | .4943 | 1958 | |
| 47 | Mike Taylor | .4938 | 1931 | |
| 48 | John Wicklund | .4933 | 1936 | |
| 49 | T.R. Goins* | .4924 | 1927 | |
| 50 | Al Lowther | .4920 | 1877 | |
| 51 | Roger Cleaves | .4919 | 1948 | |
| 52 | Frank Sobreville | .4912 | 1886 | |
| 53 | John Seigle | .4902 | 1882 | |
| 54 | Michael Colman | .4875 | 1887 | |
| 55 | Tom Bird* | .4874 | 1940 | |
| 56 | Art McKinney# | .4862 | 1961 | |
| 57 | Marsh Perry | .4854 | 1889 | |
| 58 | Roger Cleaves | .4842 | 1953 | |
| 59 | Marsh Perry | .4841 | 1883 | |
| 60 | T.R. Goins* | .4836 | 1935 | |
| 61 | Speed Davis | .4825 | 1930 | |
| 62 | T.R. Goins* | .4813 | 1933 | |
| 63 | Lew Mercer# | .4810 | 1961 | |
| 64 | Carl Ames | .4807 | 1928 | |
| 65 | Tommy Allen | .4806 | 1881 | |
| 66 | George Cleaves* | .4798 | 1942 | |
| 67 | Joe Welch | .4795 | 1927 | |
| 67 | Wally Grant | .4795 | 1889 | |
| 69 | Roger Cleaves | .4792 | 1952 | |
| 70 | George Cleaves* | .4784 | 1951 | |
| 71 | Roger Cleaves | .4780 | 1954 | |
| 72 | George Cleaves* | .4778 | 1936 | |
| 73 | Hal Kennedy# | .4773 | 1959 | |
| 74 | Marsh Perry | .4764 | 1892 | |
| 75 | Dick York | .4763 | 1923 | |
| 76 | George Cleaves* | .4756 | 1940 | |
| 77 | Carl Ames | .4741 | 1927 | |
| 78 | Pete Casstevens | .4738 | 1954 | |
| 79 | T.R. Goins* | .4737 | 1928 | |
| 80 | Tom Bird* | .4718 | 1942 | |
| 81 | Larry McClure# | .4717 | 1951 | |
| 82 | Brad Keylon# | .4715 | 1957 | |
| 83 | Harry Mead | .4708 | 1944 | |
| 84 | Hal Kennedy# | .4707 | 1960 | |
| 85 | Les Rowe | .4693 | 1905 | |
| 86 | Fred Barrell | .4690 | 1930 | |
| 87 | Larry McClure# | .4674 | 1953 | |
| 88 | Jack Taylor | .4662 | 1889 | |
| 89 | George Cleaves* | .4661 | 1949 | |
| 89 | George Smith | .4661 | 1890 | |
| 91 | Marsh Perry | .4659 | 1884 | |
| 92 | Hal Kennedy# | .4657 | 1961 | |
| 93 | Jim Stone | .4655 | 1889 | |
| 93 | Harvey Reese | .4655 | 1890 | |
| 95 | Jim Black | .4646 | 1922 | |
| 96 | Daniel Gladney | .4636 | 1893 | |
| 97 | Carl Ames | .4633 | 1932 | |
| 98 | Daniel Gladney | .4614 | 1895 | |
| 98 | George Cleaves* | .4614 | 1935 | |
| 100 | Tom Bird* | .4594 | 1936 |
