P · 17 seasons · 1968 – 1984 · B/T: L/L
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1968★ | CAL | 71 | -1.85 | #298 | #47,378 |
| 1969 | KC | 47 | -2.07 | #438 | #61,889 |
| 1970 | KC | 42 | -2.37 | #656 | #93,010 |
| 1971 | KC | 68 | -2.22 | #459 | #79,219 |
| 1972 | KC | 51 | -2.02 | #404 | #54,535 |
| 1973 | KC | 6 | -2.31 | #459 | #88,839 |
| 1974 | MIN | 51 | -2.25 | #476 | #81,778 |
| 1975 | MIN | 47 | -2.32 | #470 | #89,491 |
| 1976 | MIN | 57 | -2.33 | #467 | #90,231 |
| 1977 | MIN | 61 | -2.33 | #487 | #90,441 |
| 1978 | BOS | 35 | -2.28 | #483 | #85,289 |
| 1979 | BOS | 44 | -2.29 | #466 | #87,086 |
| 1980 | BOS | 62 | -2.29 | #501 | #86,677 |
| 1981 | BOS | 32 | -2.26 | #504 | #83,103 |
| 1982 | BOS | 40 | -2.23 | #491 | #80,397 |
| 1983 | OAK | 51 | -2.22 | #479 | #79,685 |
| 1984 | OAK | 17 | -2.28 | #520 | #85,717 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1968 | CAL | 56 | -1.73 | #164 | #28,537 |
| 1969 | KC | 31 | -2.55 | #267 | #39,781 |
| 1970 | KC | 41 | 0.59 | #127 | #16,026 |
| 1971 | KC | 67 | 5.65 | #34 | #4,537 |
| 1972 | KC | 51 | -1.24 | #169 | #24,808 |
| 1973 | KC | 6 | -2.56 | #250 | #39,975 |
| 1974 | MIN | 50 | -0.38 | #136 | #20,151 |
| 1975 | MIN | 46 | 2.33 | #68 | #10,649 |
| 1976 | MIN | 57 | 2.40 | #79 | #10,475 |
| 1977 | MIN | 61 | -1.02 | #181 | #23,480 |
| 1978 | BOS | 35 | -2.09 | #222 | #32,841 |
| 1979 | BOS | 44 | 2.06 | #92 | #11,386 |
| 1980★ | BOS | 62 | 7.01 | #19 | #3,089 |
| 1981 | BOS | 32 | 1.70 | #95 | #12,425 |
| 1982 | BOS | 40 | 2.45 | #83 | #10,347 |
| 1983 | OAK | 49 | 1.53 | #105 | #12,927 |
| 1984 | OAK | 17 | -0.78 | #179 | #22,103 |
★ Best season by Z