Single-Season Leaders for Slugging Pct
Minimum of 3.1 PA/G, 1.0 IP/G, and 0.1 decision/G for single-season leaderboards for rate statistics.
| Rank | Player | SPCT | Year |
| 1. | Barry Bonds | .865 | 2002 |
| 2. | Barry Bonds | .853 | 2003 |
| 3. | Manny Ramirez | .753 | 2001 |
| 3. | Albert Pujols | .753 | 2004 |
| 3. | Ryan Braun | .753 | 2008 |
