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Jerry Koosman played 19 major-league seasons (1967-1985) as a P (612). Career totals and every year-by-year line below come from the SABR/Lahman database (CC BY-SA), covering 1871-2025.
Showing 14 season lines
| Year | Age | Team | G | AB | R | H | HR | RBI | SB | BB | SO | AVG | OPS | OPS+ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1967 | 25 | NYN | 9 | 2 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | .000 | .333 | 7 |
| 1968 | 26 | NYN | 35 | 91 | 3 | 7 | 1 | 4 | 0 | 3 | 62 | .077 | .227 | -29 |
| 1969 | 27 | NYN | 32 | 84 | 1 | 4 | 0 | 1 | 0 | 1 | 46 | .048 | .106 | -69 |
| 1970 | 28 | NYN | 30 | 70 | 5 | 6 | 0 | 4 | 0 | 8 | 46 | .086 | .279 | -20 |
| 1971 | 29 | NYN | 26 | 50 | 3 | 8 | 0 | 0 | 0 | 3 | 25 | .160 | .382 | 14 |
| 1972 | 30 | NYN | 34 | 47 | 1 | 4 | 0 | 1 | 0 | 0 | 18 | .085 | .170 | -50 |
| 1973 | 31 | NYN | 35 | 78 | 3 | 8 | 0 | 3 | 0 | 2 | 37 | .103 | .240 | -30 |
| 1974 | 32 | NYN | 35 | 86 | 5 | 16 | 0 | 5 | 0 | 7 | 29 | .186 | .480 | 39 |
| 1975 | 33 | NYN | 36 | 78 | 4 | 14 | 0 | 6 | 1 | 4 | 31 | .179 | .425 | 23 |
| 1976 | 34 | NYN | 34 | 79 | 5 | 17 | 0 | 6 | 0 | 2 | 34 | .215 | .475 | 40 |
| 1977 | 35 | NYN | 32 | 72 | 2 | 8 | 1 | 7 | 0 | 0 | 30 | .111 | .274 | -24 |
| 1978 | 36 | NYN | 38 | 70 | 1 | 6 | 0 | 2 | 0 | 0 | 27 | .086 | .214 | -39 |
| 1984 | 42 | PHI | 36 | 74 | 2 | 8 | 0 | 3 | 0 | 1 | 23 | .108 | .228 | -33 |
| 1985 | 43 | PHI | 19 | 34 | 1 | 3 | 0 | 4 | 0 | 1 | 9 | .088 | .199 | -42 |
| Year | Age | Team | G | GS | W | L | SV | IP | SO | BB | ERA | ERA+ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1967 | 25 | NYN | 9 | 3 | 0 | 2 | 0 | 22.1 | 11 | 19 | 6.04 | 56 |
| 1968 | 26 | NYN | 35 | 34 | 19 | 12 | 0 | 263.2 | 178 | 69 | 2.08 | 143 |
| 1969 | 27 | NYN | 32 | 32 | 17 | 9 | 0 | 241 | 180 | 68 | 2.28 | 158 |
| 1970 | 28 | NYN | 30 | 29 | 12 | 7 | 0 | 212 | 118 | 71 | 3.14 | 129 |
| 1971 | 29 | NYN | 26 | 24 | 6 | 11 | 0 | 165.2 | 96 | 51 | 3.04 | 114 |
| 1972 | 30 | NYN | 34 | 24 | 11 | 12 | 1 | 163 | 147 | 52 | 4.14 | 83 |
| 1973 | 31 | NYN | 35 | 35 | 14 | 15 | 0 | 263 | 156 | 76 | 2.84 | 129 |
| 1974 | 32 | NYN | 35 | 35 | 15 | 11 | 0 | 265 | 188 | 85 | 3.36 | 108 |
| 1975 | 33 | NYN | 36 | 34 | 14 | 13 | 2 | 239.2 | 173 | 98 | 3.42 | 106 |
| 1976 | 34 | NYN | 34 | 32 | 21 | 10 | 0 | 247.1 | 200 | 66 | 2.69 | 130 |
| 1977 | 35 | NYN | 32 | 32 | 8 | 20 | 0 | 226.2 | 192 | 81 | 3.49 | 112 |
| 1978 | 36 | NYN | 38 | 32 | 3 | 15 | 2 | 235.1 | 160 | 84 | 3.75 | 95 |
| 1979 | 37 | MIN | 37 | 36 | 20 | 13 | 0 | 263.2 | 157 | 83 | 3.38 | 125 |
| 1980 | 38 | MIN | 38 | 34 | 16 | 13 | 2 | 243.1 | 149 | 69 | 4.03 | 100 |
| 1981 | 39 | MIN|CHA | 27 | 16 | 4 | 13 | 5 | 121.1 | 76 | 41 | 4.01 | 91 |
| 1982 | 40 | CHA | 42 | 19 | 11 | 7 | 3 | 173.1 | 88 | 38 | 3.84 | 106 |
| 1983 | 41 | CHA | 37 | 24 | 11 | 7 | 2 | 169.2 | 90 | 53 | 4.77 | 85 |
| 1984 | 42 | PHI | 36 | 34 | 14 | 15 | 0 | 224 | 137 | 60 | 3.25 | 110 |
| 1985 | 43 | PHI | 19 | 18 | 6 | 4 | 0 | 99.1 | 60 | 34 | 4.62 | 78 |
| Year | Pos | G | GS | PO | A | E | DP |
|---|---|---|---|---|---|---|---|
| 1967 | P | 9 | 3 | 0 | 5 | 0 | 1 |
| 1968 | P | 35 | 34 | 5 | 42 | 0 | 2 |
| 1969 | P | 32 | 32 | 4 | 37 | 1 | 3 |
| 1970 | P | 30 | 29 | 7 | 20 | 0 | 1 |
| 1971 | P | 26 | 24 | 6 | 23 | 1 | 2 |
| 1972 | P | 34 | 24 | 4 | 23 | 1 | 1 |
| 1973 | P | 35 | 35 | 5 | 41 | 2 | 1 |
| 1974 | P | 35 | 35 | 8 | 41 | 4 | 2 |
| 1975 | P | 36 | 34 | 10 | 32 | 3 | 3 |
| 1976 | P | 34 | 32 | 5 | 39 | 3 | 1 |
| 1977 | P | 32 | 32 | 4 | 25 | 4 | 0 |
| 1978 | P | 38 | 32 | 4 | 48 | 6 | 4 |
| 1979 | P | 37 | 36 | 10 | 50 | 5 | 6 |
| 1980 | P | 38 | 34 | 7 | 41 | 3 | 2 |
| 1981 | P | 27 | 16 | 7 | 17 | 1 | 0 |
| 1982 | P | 42 | 19 | 12 | 24 | 1 | 3 |
| 1983 | P | 37 | 24 | 5 | 26 | 2 | 2 |
| 1984 | P | 36 | 34 | 9 | 34 | 4 | 1 |
| 1985 | P | 19 | 18 | 4 | 14 | 1 | 1 |
Team codes are the source codes (e.g. NYN for the New York Mets, BS1 for the 1875 Boston club). OPS+ is league-season normalized, not park-adjusted; unrecorded source values (such as RBI in the earliest recorded seasons) are absent, never zero-filled.
MVP, Cy Young and Rookie of the Year voting history (6 ballot finishes, 0 wins). Full year pages: 1979, 1976, 1969, 1968.
| Year | Award | Lg | Rank | Points | First-place votes |
|---|---|---|---|---|---|
| 1968 | Most Valuable Player | NL | 14 | 14 / 280 | 0 |
| 1968 | Rookie of the Year | NL | 2 | 9 / 20 | 9 |
| 1969 | Most Valuable Player | NL | 25 | 6 / 336 | 0 |
| 1976 | Cy Young Award | NL | 2 | 69 / 120 | 7 |
| 1976 | Most Valuable Player | NL | 14 | 20 / 336 | 0 |
| 1979 | Cy Young Award | AL | 6 | 5 / 140 | 0 |
Every career total and season line is computed from the SABR / Sean Lahman baseball database (2025 edition, CC BY-SA 3.0), the same source behind our historical position leaderboards. Rate stats use league-season normalization only (OPS+ and ERA+ as marked, never park-adjusted); unrecorded early-era values stay absent rather than being invented. Career totals sum only what the source records.
Award winners and MVP / Cy Young / Rookie of the Year voting history come from the same database; the year pages live under MLB award voting history. Official transactions (2011 to the current season) come from the MLB StatsAPI feed on our transactions archive.