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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | SLG | YEAR | Open Postseason Career Leaderboard |
|---|---|---|---|---|
| 1 | Joe L Morgan# | .7727 | 2014 | |
| 2 | George Grantham# | .6970 | 2015 | |
| 3 | Mickey Mantle# | .6667 | 2014 | |
| 3 | Harry Heilmann# | .6667 | 2015 | |
| 5 | Steve Garvey# | .5750 | 2014 | |
| 6 | Ty Cobb# | .5714 | 2015 | |
| 7 | Morgan Ensberg# | .5455 | 2015 | |
| 8 | Roy Campanella# | .5366 | 2014 | |
| 9 | Tony Lazzeri# | .5238 | 2014 | |
| 10 | Joe DiMaggio# | .4902 | 2014 | |
| 11 | Dickie Thon# | .4898 | 2015 | |
| 12 | Michael Bourn# | .4783 | 2015 | |
| 13 | Hank Greenberg# | .4762 | 2015 | |
| 14 | Pete Reiser# | .4722 | 2014 | |
| 15 | Jorge González# | .4565 | 2015 | |
| 16 | Duke Snider# | .4524 | 2014 | |
| 17 | Paul Waner# | .4500 | 2015 | |
| 18 | Bill Dickey# | .4490 | 2014 | |
| 19 | Jackie Robinson# | .4400 | 2014 | |
| 20 | Babe Ruth# | .4375 | 2014 | |
| 21 | Craig Biggio# | .4364 | 2015 | |
| 22 | Ken Caminiti# | .4286 | 2015 | |
| 23 | Sam Rice# | .4211 | 2014 | |
| 24 | Babe Herman# | .4167 | 2014 | |
| 25 | Carl Furillo# | .4103 | 2014 | |
| 26 | Jeff Bagwell# | .4043 | 2015 | |
| 27 | Pee Wee Reese# | .3902 | 2014 | |
| 28 | Barry Bonds# | .3810 | 2015 | |
| 29 | Richard Hidalgo# | .3800 | 2015 | |
| 30 | Paul O'Neill# | .3750 | 2014 | |
| 31 | Lou Gehrig# | .3725 | 2014 | |
| 32 | Fred Clarke# | .3684 | 2015 | |
| 33 | Willie Mays# | .3500 | 2015 | |
| 34 | Jason Kendall# | .3333 | 2015 | |
| 35 | Graig Nettles# | .3261 | 2014 | |
| 36 | Matt Kemp# | .3148 | 2014 | |
| 37 | Willie Stargell# | .2973 | 2015 | |
| 37 | Andrew McCutchen# | .2973 | 2015 | |
| 39 | Derek Jeter# | .2963 | 2014 | |
| 40 | Pie Traynor# | .2857 | 2015 | |
| 41 | Roger Peckinpaugh# | .2791 | 2014 | |
| 42 | Roger Connor# | .2727 | 2015 | |
| 43 | Brad Ausmus# | .2683 | 2015 | |
| 44 | Lance Berkman# | .2600 | 2015 | |
| 45 | Jack E Wilson# | .2500 | 2015 | |
| 46 | Pete Rose Sr# | .2000 | 2014 | |
| 47 | Joey Votto# | .1818 | 2014 | |
| 48 | Ralph Kiner# | .1111 | 2015 | |
| 49 | Barry Larkin# | .1000 | 2014 |
