P · 4 seasons · 1975 – 1978 · B/T: L/L
One category carried Jim Umbarger and the rest pulled him back: +0.3 from strikeouts, against a career total of -5.7. No season of his scores higher than 1976, at +1.8, 94th that season and 12121st of 51,303 player-seasons on record. Career value accumulated in strikeouts (+0.3), and drained away in WHIP (-3.2), ERA (-2.0) and saves (-1.1).
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1975 | TEX | 56 | -2.32 | #470 | #89,527 |
| 1976 | TEX | 30 | -2.33 | #467 | #90,267 |
| 1977 | OAK | 15 | -2.33 | #487 | #90,477 |
| 1978★ | TEX | 32 | -2.28 | #483 | #85,322 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1975 | TEX | 56 | -0.89 | #164 | #22,769 |
| 1976★ | TEX | 30 | 1.82 | #94 | #12,121 |
| 1977 | OAK | 15 | -4.27 | #358 | #50,293 |
| 1978 | TEX | 32 | -2.37 | #245 | #37,253 |
★ Best season by Z