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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Jesus Gelacio# | .5385 | 1954 | |
| 2 | Romain Larue# | .5256 | 1953 | |
| 3 | Nicholas Littmann# | .5039 | 1953 | |
| 4 | Jesus Gelacio# | .5000 | 1952 | |
| 5 | Ryusuke Sugihara# | .4925 | 1954 | |
| 6 | Jesus Gelacio# | .4763 | 1953 | |
| 7 | Jamie McIntyre# | .4721 | 1952 | |
| 8 | Bob Foster# | .4618 | 1954 | |
| 9 | Nicholas Littmann# | .4586 | 1954 | |
| 10 | Ahvo Lampinen# | .4510 | 1952 | |
| 11 | Billy Connell# | .4425 | 1953 | |
| 12 | Billy Connell# | .4424 | 1952 | |
| 13 | Cipriano Furio# | .4286 | 1952 | |
| 14 | Hector Molina# | .4189 | 1952 | |
| 15 | Bob Foster# | .4184 | 1953 | |
| 16 | Nick Garrity# | .4123 | 1952 | |
| 17 | Billy Connell# | .4069 | 1954 | |
| 18 | Harry Carr# | .3934 | 1952 | |
| 19 | Bob Foster# | .3843 | 1955 | |
| 20 | Josh Anderson# | .3693 | 1952 |
