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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | OBP | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Joel Kinser# | .4959 | 1955 | |
| 2 | Jemke Claessens# | .4692 | 1955 | |
| 3 | Eric Houston# | .4570 | 1954 | |
| 4 | Mark Henseler# | .4565 | 1958 | |
| 5 | Alje Rodriguez# | .4516 | 1956 | |
| 6 | Darragh MacMahon# | .4454 | 1953 | |
| 7 | Derek Funk# | .4278 | 1952 | |
| 8 | John Swearingen# | .4202 | 1955 | |
| 9 | Ratko Zupljanin | .4173 | 1952 | |
| 10 | Pedro Rodriguez# | .4167 | 1954 | |
| 11 | Seung-jun Wang# | .4153 | 1958 | |
| 12 | Shane Tischler# | .4145 | 1953 | |
| 13 | Cameron Cichetti# | .4085 | 1956 | |
| 14 | Jose Ramos# | .4084 | 1954 | |
| 15 | Nick Bourgeois# | .4046 | 1954 | |
| 16 | Jose Rivera# | .4024 | 1954 | |
| 17 | John Swearingen# | .3950 | 1958 | |
| 18 | Keith Harris# | .3934 | 1954 | |
| 19 | Cameron Cichetti# | .3897 | 1955 | |
| 20 | Laertes Souflas | .3865 | 1952 | |
| 21 | Sreten Stojadinovic | .3827 | 1952 | |
| 22 | Haruo Mitani# | .3814 | 1958 | |
| 22 | Samuel Ceraolo# | .3814 | 1953 | |
| 24 | Zhong-qi Eng# | .3806 | 1957 | |
| 25 | Erik Parrish# | .3724 | 1953 | |
| 26 | Silvério Isaas# | .3655 | 1957 | |
| 27 | Eric Houston# | .3653 | 1953 | |
| 28 | Bill Rodriguez# | .3543 | 1956 | |
| 28 | Tsutomu Kawashima | .3543 | 1952 | |
| 30 | Jean-Loup Pasquet# | .3443 | 1957 | |
| 31 | Oscar Garcia# | .3421 | 1956 | |
| 32 | Hector de Leon# | .3397 | 1953 | |
| 33 | Alexandr Svec# | .3333 | 1952 | |
| 34 | Samuel Ceraolo# | .3209 | 1954 | |
| 35 | Troy Ahern | .2864 | 1953 |
