P · 9 seasons · 2007 – 2015 · B/T: L/L
One category carried Joe Thatcher and the rest pulled him back: +2.0 from ERA, against a career total of -8.7. 2010 was the high-water mark, worth +1.0, 171st that season and 14520th of 51,303 player-seasons on record. On the credit side, ERA (+2.0) and WHIP (+0.3). On the debit side, strikeouts (-3.9) and saves (-2.3).
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 2007 | SD | 22 | -2.07 | #599 | #60,533 |
| 2008 | SD | 25 | -2.10 | #929 | #65,164 |
| 2009 | SD | 52 | -2.10 | #571 | #64,345 |
| 2010 | SD | 65 | -2.12 | #582 | #67,547 |
| 2011 | SD | 18 | -2.11 | #611 | #65,863 |
| 2012 | SD | 55 | -2.13 | #610 | #68,982 |
| 2013 | SD | 72 | -2.10 | #589 | #63,980 |
| 2014 | ARI | 53 | -2.07 | #591 | #59,963 |
| 2015★ | HOU | 43 | -2.05 | #594 | #57,954 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 2007 | SD | 22 | -0.01 | #235 | #18,530 |
| 2008 | SD | 25 | -4.00 | #632 | #49,866 |
| 2009 | SD | 52 | 0.36 | #214 | #16,924 |
| 2010★ | SD | 65 | 1.03 | #171 | #14,520 |
| 2011 | SD | 18 | -2.08 | #459 | #32,793 |
| 2012 | SD | 55 | -0.99 | #313 | #23,365 |
| 2013 | SD | 72 | -0.37 | #266 | #20,123 |
| 2014 | ARI | 53 | -1.23 | #339 | #24,812 |
| 2015 | HOU | 43 | -1.46 | #402 | #26,367 |
★ Best season by Z