| Wins | |
| Number | Season |
| 44 | 2022 |
| 40 | 2017 |
| 36 | 2003 |
| 35 | 2001 |
| 32 | 2019 |
| Lowest Earned Run Average | |
| Average | Season |
| 2.68 | 2017 |
| 3.01 | 2005 |
| 3.04 | 2016 |
| 3.16 | 2001 |
| 3.25 | 2003 |
| Saves | |
| Number | Season |
| 16 | 2022 |
| 12 | 2019 |
| 12 | 1986 |
| 11 | 2017 |
| 8 | 2021 |
| 8 | 2018 |
| 8 | 2010 |
| 8 | 1994 |
| 7 | 2003 |
| Complete Games | |
| Number | Season |
| 22 | 1985 |
| 21 | 1993 |
| 21 | 1990 |
| 18 | 1992 |
| 18 | 1990 |
| 18 | 1988 |
| Shutouts | |
| Number | Season |
| 9 | 2001 |
| 6 | 2019 |
| 6 | 2018 |
| 6 | 2016 |
| 6 | 2003 |
| Innings Pitched | |
| Number | Season |
| 461 | 2022 |
| 423 | 1986 |
| 413 | 2018 |
| 412-1/3 | 2000 |
| 408-1/3 | 1985 |
| Strikeouts | |
| Number | Season |
| 420 | 2022 |
| 388 | 2023 |
| 336 | 2003 |
| 333 | 2017 |
| 333 | 2002 |
| 331 | 2019 |
