| Player | Season | On Base Avg |
|---|---|---|
| Babe Ruth (GRR) | 4 | 0.4973 |
| Ted Williams (NOH) | 2 | 0.4758 |
| Babe Ruth (NOH) | 1 | 0.4729 |
| Babe Ruth (STL) | 2 | 0.4702 |
| Rogers Hornsby (VGA) | 1 | 0.4593 |
| Ted Williams (STL) | 1 | 0.4458 |
| Ted Williams (PTL) | 3 | 0.4446 |
| Ty Cobb (NOH) | 4 | 0.4378 |
| Stan Musial (GRR) | 4 | 0.4361 |
| Lou Gehrig (VGA) | 4 | 0.4360 |
| Babe Ruth (GRR) | 3 | 0.4356 |
| Billy Hamilton (VGA) | 1 | 0.4311 |
| Rogers Hornsby (ELP) | 4 | 0.4301 |
| Ted Williams (PTL) | 4 | 0.4299 |
| Lou Gehrig (VGA) | 3 | 0.4210 |
| Hank Greenberg (STL) | 3 | 0.4203 |
| Ty Cobb (ELP) | 2 | 0.4194 |
| Joe Jackson (OTT) | 4 | 0.4164 |
| Cap Anson (ELP) | 1 | 0.4161 |
| Frank Thomas (OTT) | 1 | 0.4155 |
| Eddie Collins (OTT) | 1 | 0.4073 |
| Eddie Collins (VGA) | 4 | 0.4071 |
| Mike Schmidt (VGA) | 3 | 0.4071 |
| Charlie Keller (VGA) | 4 | 0.4068 |
| Harry Heilmann (STL) | 3 | 0.4065 |
| Joe Jackson (OTT) | 3 | 0.4063 |
| Rod Carew (ELP) | 3 | 0.4055 |
| Eddie Collins (VGA) | 3 | 0.4054 |
| Rickey Henderson (NOH) | 3 | 0.4053 |
| Wade Boggs (ELP) | 3 | 0.4042 |