BB9
Danny Duffy · Season-by-season history
BB9 over time
- Kansas City Royals · MLB
Hover over a point for its value. Only numeric values with a recorded season are charted; missing seasons are not treated as zero.
| Season | Team | League | BB9 |
|---|---|---|---|
| 2021 |  Kansas City Royals |
MLB | 3.2 |
| 2020 | Kansas City Royals |
MLB | 3.5 |
| 2019 | Kansas City Royals |
MLB | 3.2 |
| 2018 | Kansas City Royals |
MLB | 4.1 |
| 2017 | Kansas City Royals |
MLB | 2.5 |
| 2016 | Kansas City Royals |
MLB | 2.1 |
| 2015 | Kansas City Royals |
MLB | 3.5 |
| 2014 | Kansas City Royals |
MLB | 3.2 |
| 2013 | Kansas City Royals |
MLB | 5.2 |
| 2012 | Kansas City Royals |
MLB | 5.9 |
| 2011 | Kansas City Royals |
MLB | 4.4 |