P · 7 seasons · 1978 – 1984 · B/T: B/R
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1978 | TEX | 30 | -2.28 | #483 | #85,289 |
| 1979 | TEX | 36 | -2.29 | #466 | #87,086 |
| 1980 | TEX | 12 | -2.29 | #501 | #86,677 |
| 1981 | TEX | 36 | -2.26 | #504 | #83,103 |
| 1982★ | TEX | 37 | -2.23 | #491 | #80,397 |
| 1983 | PHI | 3 | -2.29 | #739 | #87,411 |
| 1984 | CLE | 22 | -2.28 | #520 | #85,717 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1978 | TEX | 30 | 3.09 | #68 | #8,862 |
| 1979★ | TEX | 36 | 4.29 | #56 | #6,608 |
| 1980 | TEX | 12 | -5.31 | #372 | #50,954 |
| 1981 | TEX | 36 | 2.85 | #70 | #9,391 |
| 1982 | TEX | 37 | -4.18 | #361 | #50,032 |
| 1983 | PHI | 3 | -2.68 | #297 | #41,681 |
| 1984 | CLE | 22 | -4.76 | #392 | #50,705 |
★ Best season by Z