P · 15 seasons · 2007 – 2021 · B/T: L/L
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 2007 | PHI | 1 | -2.11 | #949 | #65,383 |
| 2008 | PHI | 8 | -2.32 | #1,166 | #89,879 |
| 2009 | PHI | 35 | -2.95 | #1,251 | #108,096 |
| 2010 | HOU | 16 | -3.04 | #1,228 | #108,838 |
| 2011 | HOU | 29 | -2.21 | #1,115 | #78,739 |
| 2012 | HOU | 32 | -2.67 | #1,235 | #104,085 |
| 2013 | TOR | 18 | -2.10 | #589 | #63,950 |
| 2014 | TOR | 30 | -2.20 | #1,137 | #77,365 |
| 2015 | SEA | 32 | -2.56 | #1,283 | #101,514 |
| 2016★ | TOR | 32 | -1.92 | #552 | #49,126 |
| 2017 | TOR | 25 | -2.14 | #1,089 | #70,742 |
| 2018 | TOR | 31 | -1.93 | #529 | #49,328 |
| 2019 | NYY | 32 | -2.14 | #1,138 | #70,341 |
| 2020 | NYY | 9 | -2.06 | #508 | #58,623 |
| 2021 | MIN | 30 | -2.47 | #1,446 | #98,388 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 2007 | PHI | 1 | -2.50 | #522 | #38,978 |
| 2008 | PHI | 8 | -1.07 | #309 | #23,768 |
| 2009 | PHI | 35 | 7.07 | #37 | #3,024 |
| 2010 | HOU | 16 | 1.00 | #176 | #14,627 |
| 2011 | HOU | 28 | -2.74 | #582 | #42,326 |
| 2012 | HOU | 28 | 0.66 | #210 | #15,788 |
| 2013 | TOR | 18 | -1.21 | #343 | #24,672 |
| 2014 | TOR | 30 | 1.37 | #179 | #13,410 |
| 2015 | SEA | 32 | 4.57 | #81 | #6,122 |
| 2016★ | TOR | 32 | 10.07 | #20 | #1,090 |
| 2017 | TOR | 25 | 4.78 | #81 | #5,792 |
| 2018 | TOR | 31 | 9.16 | #22 | #1,539 |
| 2019 | NYY | 31 | 3.36 | #120 | #8,327 |
| 2020 | NYY | 9 | 3.93 | #93 | #7,255 |
| 2021 | MIN | 30 | -1.50 | #466 | #26,653 |
★ Best season by Z