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| First Basemen Career Slugging Pct Leaderboard | |
| * - Indicates Hall of Fame Bold - Indicates active player |
| Rank | Player | Slugging Pct | PA | Years | Single Season Leaderboard |
| 1. | Glenn Knapp | .5297 | 4130 | 2009-2014 | |
| 2. | Taitarou Haranobu | .5135 | 4083 | 2009-2014 | |
| 3. | Michael Giroux | .4703 | 3818 | 2009-2014 | |
| 4. | Ted Pauling | .4461 | 3019 | 2009-2014 | |
| 5. | Mike Chisholm | .4457 | 3863 | 2009-2014 | |
| 6. | Kenny Blumberg | .4442 | 3979 | 2009-2014 | |
| 7. | Bill Souder | .4436 | 3881 | 2009-2014 | |
| 8. | Emil Villarreal | .4347 | 3020 | 2009-2014 | |
| 9. | Tomas Nelson | .4194 | 3643 | 2009-2014 | |
| 10. | Michael Bailey | .3830 | 3507 | 2009-2014 | |
| 11. | Guy Gillham | .3713 | 3819 | 2009-2014 | |
| 12. | Aran Takafumi | .3607 | 3286 | 2009-2014 |
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