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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OPS | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Henry Mason | 1.5428 | 1906 | |
| 2 | Dan Rhodes | 1.4599 | 1906 | |
| 3 | Jimmy Anastas | 1.4149 | 1906 | |
| 4 | George Mick | 1.3526 | 1906 | |
| 5 | Henry Mason | 1.3131 | 1907 | |
| 6 | Tom Varady | 1.2299 | 1907 | |
| 7 | Dan Rhodes | 1.2196 | 1908 | |
| 8 | Harry Rowell | 1.2148 | 1905 | |
| 9 | Henry Mason | 1.1971 | 1905 | |
| 10 | Henry Mason | 1.1968 | 1908 | |
| 11 | John Cheek | 1.1659 | 1907 | |
| 12 | Tim Watkins | 1.1366 | 1906 | |
| 13 | Ike Eklund | 1.1275 | 1908 | |
| 14 | Ike Eklund | 1.1231 | 1907 | |
| 15 | Ed Lowry | 1.1081 | 1907 | |
| 16 | Sim Hay | 1.1015 | 1908 | |
| 17 | Bobby Johnson | 1.1011 | 1928 | |
| 18 | Al Van Camp | 1.0985 | 1908 | |
| 19 | Nellie Dawson | 1.0963 | 1935 | |
| 20 | Bill Fosness | 1.0945 | 1906 | |
| 21 | Jim Williford | 1.0911 | 1907 | |
| 22 | Bill Fasulo | 1.0886 | 1907 | |
| 23 | Frankie Cohen# | 1.0836 | 1935 | |
| 24 | Mark Mertes | 1.0778 | 1908 | |
| 25 | Frank Claunch | 1.0690 | 1907 | |
| 26 | John Peters | 1.0685 | 1907 | |
| 27 | William Barr | 1.0683 | 1908 | |
| 28 | Ollie Cummins | 1.0630 | 1907 | |
| 29 | Ralph Marshall | 1.0624 | 1932 | |
| 30 | Tim Watkins | 1.0611 | 1905 | |
| 31 | Luis Galvan | 1.0512 | 1931 | |
| 32 | Milt Wirth | 1.0505 | 1906 | |
| 33 | Bill Harvey | 1.0479 | 1908 | |
| 34 | Ed Lowry | 1.0472 | 1908 | |
| 35 | German Serrano | 1.0458 | 1916 | |
| 36 | Bill Harvey | 1.0359 | 1907 | |
| 37 | John Chase | 1.0335 | 1906 | |
| 38 | John Schonberger | 1.0319 | 1907 | |
| 39 | Dick Edwards | 1.0306 | 1924 | |
| 40 | Bill McCollum | 1.0279 | 1906 | |
| 41 | Ed Ware | 1.0249 | 1908 | |
| 42 | Joe Acker | 1.0239 | 1939 | |
| 43 | Will Swanson | 1.0230 | 1905 | |
| 44 | Curt Dickerson | 1.0227 | 1931 | |
| 45 | Bobby Bond | 1.0221 | 1930 | |
| 46 | John Smith | 1.0206 | 1908 | |
| 47 | Mike Dillon | 1.0197 | 1906 | |
| 48 | Spencer Leonard | 1.0163 | 1916 | |
| 49 | George Kobal | 1.0162 | 1905 | |
| 50 | Jim Parks | 1.0140 | 1934 | |
| 51 | Jim Hart | 1.0088 | 1906 | |
| 52 | Zack Ginsburg | 1.0076 | 1905 | |
| 53 | William Barr | 1.0068 | 1906 | |
| 54 | Mike Mason | 1.0061 | 1929 | |
| 55 | Walt Prevatt | 1.0028 | 1914 | |
| 56 | Bill Carnal | 1.0018 | 1907 | |
| 57 | Art Summers | 1.0013 | 1939 | |
| 58 | Red Kleiner | .9989 | 1925 | |
| 59 | Lou McEwen | .9972 | 1935 | |
| 60 | Zack Ginsburg | .9940 | 1906 | |
| 61 | Vern Ingram | .9936 | 1925 | |
| 62 | John Smith | .9934 | 1907 | |
| 63 | Tom Dixon | .9916 | 1905 | |
| 64 | Jim McGee | .9894 | 1930 | |
| 65 | Hugh Anderson | .9889 | 1927 | |
| 66 | Jake Matheson | .9887 | 1931 | |
| 67 | Art Summers | .9868 | 1936 | |
| 67 | Art Summers | .9868 | 1937 | |
| 69 | Luis Galvan | .9865 | 1927 | |
| 70 | Owen Murdock | .9859 | 1932 | |
| 71 | Bill Bradley# | .9831 | 1938 | |
| 72 | Joe Richardson | .9824 | 1927 | |
| 73 | Eli Berry | .9822 | 1907 | |
| 74 | Bob Smith# | .9798 | 1935 | |
| 75 | Jon Kesner | .9789 | 1907 | |
| 76 | Earl Fischer | .9786 | 1935 | |
| 77 | Jorge Nava | .9783 | 1935 | |
| 78 | Jimmy Anastas | .9778 | 1908 | |
| 79 | Bob Smith# | .9750 | 1936 | |
| 80 | Frank Claunch | .9747 | 1906 | |
| 81 | Tony King | .9740 | 1935 | |
| 82 | Bill Fosness | .9738 | 1905 | |
| 83 | William Barr | .9737 | 1905 | |
| 84 | Harry McMahan | .9726 | 1907 | |
| 85 | Joe Paden | .9711 | 1912 | |
| 86 | Bernie Baker | .9691 | 1911 | |
| 87 | Gordon Hawthorne | .9667 | 1918 | |
| 88 | Vern Ingram | .9653 | 1929 | |
| 89 | German Serrano | .9651 | 1918 | |
| 90 | Charlie DeMars# | .9643 | 1941 | |
| 90 | Ron Godfrey | .9643 | 1927 | |
| 92 | Jim McGee | .9632 | 1929 | |
| 93 | Jim Williford | .9629 | 1905 | |
| 94 | Red Payne | .9619 | 1935 | |
| 95 | Bill Eppler | .9606 | 1934 | |
| 96 | Al Wilson | .9602 | 1937 | |
| 96 | George Simpson | .9602 | 1938 | |
| 98 | Bill Littlefield | .9594 | 1932 | |
| 99 | James Farrar | .9591 | 1906 | |
| 100 | Doc Brown | .9574 | 1932 |
