P · 14 seasons · 2003 – 2016 · B/T: L/L
Javier Lopez was worth +4.3 in ERA alone, more than his entire career total of -9.5 once everything else is counted against him. No season of his scores higher than 2013, at +1.2, 185th that season and 14112th of 51,303 player-seasons on record. On the credit side, ERA (+4.3) and WHIP (+0.1). On the debit side, strikeouts (-7.2) and saves (-1.8).
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 2003 | COL | 75 | -2.10 | #591 | #64,792 |
| 2004 | COL | 64 | -2.19 | #971 | #76,718 |
| 2005 | ARI | 32 | -2.10 | #572 | #64,808 |
| 2006 | BOS | 27 | -2.08 | #573 | #62,707 |
| 2007 | BOS | 61 | -2.07 | #599 | #60,533 |
| 2008 | BOS | 70 | -2.10 | #929 | #65,164 |
| 2009 | BOS | 14 | -2.10 | #571 | #64,345 |
| 2010 | PIT | 77 | -2.16 | #909 | #72,909 |
| 2011 | SF | 70 | -2.18 | #1,052 | #74,916 |
| 2012 | SF | 70 | -2.13 | #610 | #68,982 |
| 2013 | SF | 69 | -2.10 | #589 | #63,980 |
| 2014 | SF | 65 | -2.07 | #591 | #59,963 |
| 2015★ | SF | 77 | -2.05 | #594 | #57,954 |
| 2016 | SF | 68 | -2.06 | #989 | #58,533 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 2003 | COL | 75 | 0.63 | #175 | #15,919 |
| 2004 | COL | 64 | -3.61 | #615 | #48,879 |
| 2005 | ARI | 32 | -3.32 | #576 | #47,497 |
| 2006 | BOS | 27 | -1.22 | #326 | #24,754 |
| 2007 | BOS | 61 | -0.34 | #254 | #20,033 |
| 2008 | BOS | 70 | 0.38 | #212 | #16,886 |
| 2009 | BOS | 14 | -3.42 | #627 | #48,031 |
| 2010 | PIT | 77 | 1.01 | #174 | #14,624 |
| 2011 | SF | 70 | 0.78 | #183 | #15,392 |
| 2012 | SF | 70 | 0.44 | #229 | #16,620 |
| 2013★ | SF | 69 | 1.16 | #185 | #14,112 |
| 2014 | SF | 65 | -1.27 | #344 | #25,072 |
| 2015 | SF | 77 | 0.84 | #209 | #15,181 |
| 2016 | SF | 68 | -1.56 | #408 | #27,130 |
★ Best season by Z