Jerry Koosman

Pitcher · Career Stats, Bio & Records (1967-1985)

W–L 222–209
ERA 3.36
WHIP 1.26
SO 2,556
Pitcher PIV 42938.7
Position
Pitcher
Bats / Throws
R / L
Height / Weight
6'2" / 205 lb
Born
12/23/1942 in Appleton, MN, USA
MLB Debut
1967-04-14
Last Game
1985-08-21
Awards
2× All-Star

Full name: Jerome Martin Koosman

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Career Pitching Statistics

W L G GS CG SHO SV IP H ER HR BB SO ERA Pitcher PIV
222 209 612 527 140 33 17 3839.3 3,635 1,433 290 1,198 2,556 3.36 42938.7

Career ERA 3.36 vs. league average 3.68 across their career seasons — 8.8% better than league average.

Season-by-Season Pitching

Pitching Career Arc

Click a stat to plot it across every season.

Year Team Lg W L G GS CG SHO SV IP H ER BB SO ERA Lg ERA Pitcher PIV
1967 NYN NL 0 2 9 3 0 0 0 22.3 22 15 19 11 6.04 3.30 (-83%) -1423.2
1968 NYN NL 19 12 35 34 17 7 0 263.7 221 61 69 178 2.08 2.98 (+30%) 1960.7
1969 NYN NL 17 9 32 32 16 6 0 241.0 187 61 68 180 2.28 3.61 (+37%) 5985.9
1970 NYN NL 12 7 30 29 5 1 0 212.0 189 74 71 118 3.14 3.89 (+19%) -113.4
1971 NYN NL 6 11 26 24 4 0 0 165.7 160 56 51 96 3.04 3.47 (+12%) 1255.8
1972 NYN NL 11 12 34 24 4 1 1 163.0 155 75 52 147 4.14 3.26 (-27%) 2041.0
1973 NYN NL 14 15 35 35 12 3 0 263.0 234 83 76 156 2.84 3.75 (+24%) 3911.6
1974 NYN NL 15 11 35 35 13 0 0 265.0 258 99 85 188 3.36 3.63 (+7%) 4482.0
1975 NYN NL 14 13 36 34 11 4 2 239.7 234 91 98 173 3.42 3.71 (+8%) 1634.0
1976 NYN NL 21 10 34 32 17 3 0 247.3 205 74 66 200 2.69 3.51 (+23%) 4467.5
1977 NYN NL 8 20 32 32 6 1 0 226.7 195 88 81 192 3.49 4.00 (+13%) 5068.5
1978 NYN NL 3 15 38 32 3 0 2 235.3 221 98 84 160 3.75 3.69 (-2%) 2158.9
1979 MIN AL 20 13 37 36 10 2 0 263.7 268 99 83 157 3.38 4.00 (+16%) 3790.5
1980 MIN AL 16 13 38 34 8 0 2 243.3 252 109 69 149 4.03 3.84 (-5%) 763.9
1981 MIN AL 3 9 19 13 2 1 5 94.3 98 44 34 55 4.20 3.58 (-17%) -81.1
1981 CHA AL 1 4 8 3 1 0 0 27.0 27 10 7 21 3.33 3.58 (+7%) 541.7
1982 CHA AL 11 7 42 19 3 1 3 173.3 194 74 38 88 3.84 3.86 (+1%) 3565.3
1983 CHA AL 11 7 37 24 2 1 2 169.7 176 90 53 90 4.77 3.87 (-23%) -1360.7
1984 PHI NL 14 15 36 34 3 1 0 224.0 232 81 60 137 3.25 3.81 (+15%) 5611.9
1985 PHI NL 6 4 19 18 3 1 0 99.3 107 51 34 60 4.62 3.89 (-19%) -1322.3
Career · 20 seasons 222 209 612 527 140 33 17 3,839.1 3,635 1,433 1,198 2,556 3.36 — 42,939

Lg columns show the league average for that season, with the player's figure as a percentage above or below it. Career totals the seasons listed above.

Career Batting Statistics

G AB R H 2B 3B HR RBI SB BB SO AVG OBP SLG OPS PIV
612 915 36 109 12 1 2 46 1 33 418 .119 .151 .141 .292 -7,235

Career AVG .119 vs. league average .256 across their career seasons — 53.4% below league average.

Career OBP .151 vs. league average .322 across their career seasons — 53.0% below league average.

Career SLG .141 vs. league average .377 across their career seasons — 62.6% below league average.

Career OPS .292 vs. league average .699 across their career seasons — 58.2% below league average.

Season-by-Season Batting

Career Arc

Click a stat to plot it across every season.

Year Team Lg G AB R H 2B 3B HR RBI SB BB SO AVG Lg AVG Lg OBP Lg SLG Lg OPS PIV
1967 NYN NL 9 2 0 0 0 0 0 0 0 1 1 .000 — — — — 0.0
1968 NYN NL 35 91 3 7 1 0 1 4 0 3 62 .077 .236 (-68%) .298 (-64%) .340 (-64%) .638 (-64%) -840.6
1969 NYN NL 32 84 1 4 0 0 0 1 0 1 46 .048 .248 (-81%) .320 (-82%) .369 (-87%) .689 (-85%) -1084.3
1970 NYN NL 30 70 5 6 1 0 0 4 0 8 46 .086 .253 (-66%) .325 (-45%) .385 (-74%) .711 (-61%) -662.7
1971 NYN NL 26 50 3 8 0 0 0 0 0 3 25 .160 .249 (-36%) .316 (-30%) .365 (-56%) .682 (-44%) -321.8
1972 NYN NL 34 47 1 4 0 0 0 1 0 0 18 .085 — — — — 0.0
1973 NYN NL 35 78 3 8 1 0 0 3 0 2 37 .103 .256 (-60%) .325 (-62%) .378 (-70%) .703 (-66%) -801.3
1974 NYN NL 35 86 5 16 2 1 0 5 0 7 29 .186 .256 (-28%) .324 (-24%) .369 (-37%) .693 (-31%) -407.8
1975 NYN NL 36 78 4 14 2 0 0 6 1 4 31 .179 .257 (-30%) .327 (-33%) .374 (-45%) .701 (-39%) -478.5
1976 NYN NL 34 79 5 17 2 0 0 6 0 2 34 .215 .255 (-16%) .320 (-27%) .360 (-33%) .681 (-30%) -364.8
1977 NYN NL 32 72 2 8 0 0 1 7 0 0 30 .111 .264 (-58%) .329 (-63%) .401 (-62%) .730 (-62%) -733.7
1978 NYN NL 38 70 1 6 3 0 0 2 0 0 27 .086 .257 (-67%) .323 (-74%) .378 (-66%) .702 (-69%) -762.2
1979 MIN AL 37 0 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
1980 MIN AL 38 0 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
1981 MIN AL 19 0 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
1981 CHA AL 8 0 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
1982 CHA AL 42 0 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
1983 CHA AL 37 0 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
1984 PHI NL 36 74 2 8 0 0 0 3 0 1 23 .108 .259 (-58%) .322 (-63%) .384 (-72%) .707 (-68%) -777.4
1985 PHI NL 19 34 1 3 0 0 0 4 0 1 9 .088 — — — — 0.0
Career · 20 seasons 612 915 36 109 12 1 2 46 1 33 418 .119 — — — — -7,235

Lg columns show the league average for that season, with the player's figure as a percentage above or below it. Career totals the seasons listed above.

Postseason Statistics

Playoff Career Batting

G AB R H 2B 3B HR RBI BB SO AVG
7 17 2 3 1 0 0 1 1 9 .176

Playoff Batting by Year

Year Round Team G AB R H 2B 3B HR RBI BB SO AVG
1983 ALCS CHA 1 0 0 0 0 0 0 0 0 0 .000
1973 NLCS NYN 1 4 1 2 0 0 0 1 0 0 .500
1973 WS NYN 2 4 0 0 0 0 0 0 0 3 .000
1969 NLCS NYN 1 2 1 0 0 0 0 0 1 2 .000
1969 WS NYN 2 7 0 1 1 0 0 0 0 4 .143

Playoff Career Pitching

W L G GS SV IP H ER BB SO ERA
4 0 7 6 0 40.3 32 17 17 31 3.79

Playoff Pitching by Year

Year Round Team W L G GS SV IP H ER BB SO ERA
1983 ALCS CHA 0 0 1 0 0 0.3 1 2 2 0 54.00
1973 NLCS NYN 1 0 1 1 0 9.0 8 2 0 9 2.00
1973 WS NYN 1 0 2 2 0 8.7 9 3 7 8 3.12
1969 NLCS NYN 0 0 1 1 0 4.7 7 6 4 5 11.57
1969 WS NYN 2 0 2 2 0 17.7 7 4 4 9 2.04

Game Log & Splits

View full game log (1224 games) →

Per-game data from Retrosheet (regular season, through 2025).

Batting — Home / Away

SplitGABRHHRRBIAVG
Home3004181745221.108
Away3124971964025.129

Pitching — Home / Away

SplitGIPHERBBSOERA
Home3001937.0179369458213613.22
Away3121902.1184273961611953.50

Last 10 Games — Batting

DateTmOppResABRH2B3BHRRBIBBSO
1985-08-21 PHILADL 000000000
1985-08-15 PHINYNL 100000100
1985-08-10 PHISTLL 100000000
1985-08-03 PHISTLW 301000112
1985-07-28 PHIATLW 300000000
1985-07-23 PHIHOUW 200000100
1985-07-18 PHICINW 400000001
1985-07-10 PHIHOUL 000000000
1985-07-05 PHICINW 200000000
1985-06-30 PHIWSNW 201000100

Last 10 Games — Pitching

DateTmOppDecIPHRERBBSOHR
1985-08-21 PHILAD L 0.2555202
1985-08-15 PHINYN — 1.2566313
1985-08-10 PHISTL L 5.0352210
1985-08-03 PHISTL — 7.1633330
1985-07-28 PHIATL W 9.0533482
1985-07-23 PHIHOU W 5.11055132
1985-07-18 PHICIN W 7.2733041
1985-07-10 PHIHOU L 0.0355200
1985-07-05 PHICIN — 6.2622141
1985-06-30 PHIWSN — 7.0522241

Fielding Statistics

Career Fielding Totals by Position

Position G GS PO A E DP
P 612 527 116 582 42 36

Season-by-Season Fielding

Year Team Pos G GS PO A E DP
1967 NYN P 9 3 0 5 0 1
1968 NYN P 35 34 5 42 0 2
1969 NYN P 32 32 4 37 1 3
1970 NYN P 30 29 7 20 0 1
1971 NYN P 26 24 6 23 1 2
1972 NYN P 34 24 4 23 1 1
1973 NYN P 35 35 5 41 2 1
1974 NYN P 35 35 8 41 4 2
1975 NYN P 36 34 10 32 3 3
1976 NYN P 34 32 5 39 3 1
1977 NYN P 32 32 4 25 4 0
1978 NYN P 38 32 4 48 6 4
1979 MIN P 37 36 10 50 5 6
1980 MIN P 38 34 7 41 3 2
1981 MIN P 19 13 5 15 1 0
1981 CHA P 8 3 2 2 0 0
1982 CHA P 42 19 12 24 1 3
1983 CHA P 37 24 5 26 2 2
1984 PHI P 36 34 9 34 4 1
1985 PHI P 19 18 4 14 1 1

Career Games by Position

Position Diamond

Circle size = games played at each position.

Position Games
Pitcher 612

Awards & Honors

Year Award Notes
1976 Pitcher of the Month July
1973 Player of the Month April
1973 Player of the Week Week of 1973-04-27
1968 TSN Rookie Pitcher of the Year

Salary History

Year Team League Salary
1985 PHI NL $600,000
Total Career Earnings $600,000

Award Voting History

Year Award League Finish Points Won Points Max Votes First
1979 Cy Young Award AL 6th 5.0 140 0
1976 Cy Young Award NL 2nd 69.0 120 7
1976 Most Valuable Player NL 14th 20.0 336 0
1969 Most Valuable Player NL 23th 6.0 336 0
1968 Most Valuable Player NL 13th 14.0 280 0
1968 Rookie of the Year NL 2nd 9.0 20 9

Most Similar Players

Career comps based on counting + rate stats and primary position. Score is relative — closest peer anchors at ~98%.

Career Spans

Jerry Koosman (highlighted) compared to peers across the same era.

  1. 98
    Mickey Lolich
    217-191, 3.44 ERA
  2. 96
    Luis Tiant
    229-172, 3.30 ERA
  3. 89
    Jim Bunning HOF
    224-184, 3.27 ERA
  4. 83
    Dennis Martinez
    245-193, 3.70 ERA
  5. 81
    Jerry Reuss
    220-191, 3.64 ERA
  6. 76
    Rick Reuschel
    214-191, 3.37 ERA

Compare Jerry Koosman

Side-by-side career stat comparisons against Koosman's closest peers by position and era.

vs Tom Seaver
vs Gaylord Perry
vs Steve Carlton
vs Bert Blyleven
vs Bob Gibson
vs Don Sutton

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See Jerry Koosman in Another Era

What would Koosman's 1968 season look like in a different era's run environment? Try the cross-era translation with a live slider.

Translate Jerry Koosman's peak season across eras →

Frequently Asked Questions about Jerry Koosman

What years did Jerry Koosman play?
Jerry Koosman played in Major League Baseball from 1967 to 1985.
Was Jerry Koosman a pitcher?
Yes. Jerry Koosman pitched in the major leagues, recording 222 wins and 2556 strikeouts.
How many home runs did Jerry Koosman hit?
Jerry Koosman hit 2 career home runs with 109 hits.