P · 14 seasons · 1971 – 1985 · B/T: L/L
Few careers score higher: Andy Hassler sits 1st of 0 pitchers all-time in roto value, built over 14 seasons. His best year was 1980: +3.5 roto value, 67th that season and 8061st of 51,303 player-seasons on record.
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1971 | CAL | 6 | -2.43 | #664 | #96,675 |
| 1973 | CAL | 7 | -2.31 | #459 | #88,875 |
| 1974 | CAL | 23 | -2.25 | #476 | #81,812 |
| 1975 | CAL | 30 | -2.32 | #470 | #89,527 |
| 1976 | KC | 33 | -2.33 | #467 | #90,267 |
| 1977 | KC | 30 | -2.33 | #487 | #90,477 |
| 1978 | BOS | 24 | -2.28 | #483 | #85,322 |
| 1979 | NYM | 37 | -3.03 | #873 | #108,801 |
| 1980 | CAL | 47 | -2.35 | #759 | #92,267 |
| 1981 | CAL | 42 | -2.26 | #504 | #83,137 |
| 1982★ | CAL | 54 | -2.23 | #491 | #80,431 |
| 1983 | CAL | 42 | -2.26 | #494 | #83,824 |
| 1984 | STL | 3 | -2.28 | #520 | #85,750 |
| 1985 | STL | 10 | -2.24 | #482 | #81,373 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1971 | CAL | 6 | -3.00 | #297 | #45,246 |
| 1973 | CAL | 7 | -2.60 | #254 | #40,642 |
| 1974 | CAL | 23 | 2.37 | #71 | #10,578 |
| 1975 | CAL | 30 | -4.59 | #337 | #50,672 |
| 1976 | KC | 33 | -0.80 | #148 | #22,253 |
| 1977 | KC | 29 | -0.87 | #178 | #22,621 |
| 1978 | KC | 24 | -2.57 | #274 | #40,213 |
| 1979 | NYM | 37 | -0.76 | #178 | #22,006 |
| 1980★ | CAL | 47 | 3.51 | #67 | #8,061 |
| 1981 | CAL | 42 | 1.12 | #107 | #14,232 |
| 1982 | CAL | 54 | -0.15 | #160 | #19,129 |
| 1983 | CAL | 42 | -2.68 | #295 | #41,665 |
| 1984 | STL | 3 | -2.74 | #303 | #42,505 |
| 1985 | STL | 10 | -2.17 | #260 | #34,200 |
★ Best season by Z