P · 17 seasons · 1980 – 1997 · B/T: L/L
Few careers score higher: Fernando Valenzuela sits 1st of 0 pitchers all-time in roto value, built over 17 seasons. His best year was 1981: +13.2 roto value, 2nd that season and 348th of 51,303 player-seasons on record. The value came from strikeouts (+25.4), wins (+19.3) and ERA (+12.8), with no category working against him.
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1980 | LAD | 10 | -2.32 | #723 | #89,860 |
| 1981 | LAD | 25 | -1.73 | #395 | #45,327 |
| 1982 | LAD | 38 | -2.74 | #876 | #105,442 |
| 1983 | LAD | 36 | -2.44 | #838 | #97,312 |
| 1984 | LAD | 35 | -2.05 | #438 | #56,784 |
| 1985 | LAD | 35 | -2.09 | #437 | #63,768 |
| 1986 | LAD | 39 | -2.38 | #768 | #93,622 |
| 1987 | LAD | 38 | -3.12 | #955 | #109,409 |
| 1988 | LAD | 23 | -2.50 | #890 | #99,644 |
| 1989 | LAD | 34 | -2.49 | #910 | #99,282 |
| 1990★ | LAD | 35 | -0.86 | #325 | #35,916 |
| 1991 | CAL | 2 | -2.14 | #497 | #70,891 |
| 1993 | BAL | 32 | -2.18 | #553 | #74,976 |
| 1994 | PHI | 8 | -2.29 | #795 | #86,542 |
| 1995 | SD | 29 | -1.51 | #407 | #42,118 |
| 1996 | SD | 36 | -2.91 | #1,113 | #107,755 |
| 1997 | SD | 19 | -2.31 | #986 | #88,326 |
★ Best season by Z
| Season ↑ | Tm | G | Z | Szn | All-Time |
|---|---|---|---|---|---|
| 1980 | LAD | 10 | -0.53 | #169 | #20,904 |
| 1981★ | LAD | 25 | 13.21 | #2 | #348 |
| 1982 | LAD | 37 | 10.75 | #5 | #872 |
| 1983 | LAD | 35 | 4.73 | #49 | #5,886 |
| 1984 | LAD | 34 | 8.19 | #13 | #2,125 |
| 1985 | LAD | 35 | 11.22 | #4 | #737 |
| 1986 | LAD | 34 | 11.03 | #5 | #786 |
| 1987 | LAD | 34 | 3.17 | #74 | #8,711 |
| 1988 | LAD | 23 | -2.54 | #340 | #39,744 |
| 1989 | LAD | 31 | 1.29 | #129 | #13,695 |
| 1990 | LAD | 33 | -0.32 | #192 | #19,901 |
| 1991 | CAL | 2 | -3.25 | #435 | #47,085 |
| 1993 | BAL | 32 | -0.91 | #234 | #22,897 |
| 1994 | PHI | 8 | 0.01 | #173 | #18,400 |
| 1995 | SD | 29 | 0.12 | #185 | #17,894 |
| 1996 | SD | 33 | 4.08 | #70 | #6,986 |
| 1997 | SD | 18 | -2.45 | #408 | #38,350 |
★ Best season by Z