P · 8 seasons · 1977 – 1987 · B/T: R/R
Roy Thomas was worth +0.2 in ERA alone, more than his entire career total of -10.2 once everything else is counted against him. The peak came in 1985, +1.5, 109th that season and 13110th of 51,303 player-seasons on record. The value came from ERA (+0.2). It leaked back out through strikeouts (-3.1), saves (-2.1) and WHIP (-0.9).
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1977 | HOU | 4 | -2.33 | #487 | #90,477 |
| 1978★ | STL | 16 | -2.24 | #471 | #81,358 |
| 1979 | STL | 26 | -2.74 | #839 | #105,402 |
| 1980 | STL | 24 | -2.47 | #818 | #98,211 |
| 1983 | SEA | 43 | -2.26 | #494 | #83,824 |
| 1984 | SEA | 21 | -2.28 | #520 | #85,750 |
| 1985 | SEA | 40 | -2.24 | #482 | #81,373 |
| 1987 | SEA | 8 | -2.28 | #490 | #85,085 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1977 | HOU | 4 | -2.45 | #256 | #38,391 |
| 1978 | STL | 16 | -1.47 | #194 | #26,420 |
| 1979 | STL | 26 | 0.79 | #129 | #15,342 |
| 1980 | STL | 24 | -2.76 | #287 | #42,677 |
| 1983 | SEA | 43 | -0.30 | #171 | #19,816 |
| 1984 | SEA | 21 | -2.94 | #318 | #44,683 |
| 1985★ | SEA | 40 | 1.48 | #109 | #13,110 |
| 1987 | SEA | 8 | -2.54 | #300 | #39,712 |
★ Best season by Z