BB/9
From BR Bullpen
The average number of walks a pitcher allows over 9 innings.
| All Time Leaders | |||
|---|---|---|---|
| Span | Player | Total | Notes |
| Career | Tommy Bond | 0.58 | |
| Season | George Zettlein | 0.23 | 1876 |
| Season (since 1901) | Babe Adams | 0.62 | 1920 |
| 1000 inning minimum for career | |||
