P · 12 seasons · 1981 – 1995 · B/T: B/L
One category carried Atlee Hammaker and the rest pulled him back: +6.0 from WHIP, against a career total of +3.9. No season of his scores higher than 1983, at +7.8, 14th that season and 2415th of 51,303 player-seasons on record. His profile is all upside: WHIP (+6.0) and ERA (+2.3), and nothing on the debit side.
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1981 | KC | 10 | -2.26 | #504 | #83,137 |
| 1982 | SF | 29 | -3.55 | #930 | #111,027 |
| 1983 | SF | 23 | -3.34 | #946 | #110,426 |
| 1984 | SF | 6 | -2.31 | #740 | #88,372 |
| 1985 | SF | 29 | -3.26 | #934 | #110,111 |
| 1987 | SF | 31 | -3.15 | #957 | #109,600 |
| 1988 | SF | 43 | -2.73 | #935 | #105,283 |
| 1989★ | SF | 28 | -1.75 | #391 | #45,525 |
| 1990 | SF | 34 | -2.50 | #950 | #99,762 |
| 1991 | SD | 1 | -2.18 | #793 | #74,732 |
| 1994 | CWS | 2 | -2.25 | #508 | #82,292 |
| 1995 | CWS | 13 | -2.13 | #547 | #69,853 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1981 | KC | 10 | -3.39 | #322 | #47,852 |
| 1982 | SF | 29 | 2.28 | #90 | #10,806 |
| 1983★ | SF | 23 | 7.78 | #14 | #2,415 |
| 1984 | SF | 6 | -1.00 | #191 | #23,382 |
| 1985 | SF | 29 | 1.80 | #99 | #12,163 |
| 1987 | SF | 31 | 3.77 | #62 | #7,566 |
| 1988 | SF | 43 | 2.11 | #103 | #11,242 |
| 1989 | SF | 28 | -0.56 | #181 | #21,039 |
| 1990 | SF | 34 | -0.70 | #207 | #21,749 |
| 1991 | SD | 1 | -2.66 | #377 | #41,511 |
| 1994 | CWS | 2 | -2.28 | #332 | #35,826 |
| 1995 | CWS | 13 | -3.26 | #505 | #47,128 |
★ Best season by Z