Jerry Koosman

HandednessBats Right · Throws Left

Listed at6 ft 2 in · 205 lb

BornDecember 23, 1942 · Appleton, MN, USA

MLB debutApril 14, 1967

Final gameAugust 21, 1985

Seasons19 (1967–1985)

New York Mets 1967–1978; Minnesota Twins 1979–1980; Chicago White Sox 1981; Minnesota Twins 1981; Chicago White Sox 1982–1983; Philadelphia Phillies 1984–1985

Percentile snapshot

1984 season — qualified pitchers

75.3

63.4

8.6

19.4

SHO

232

63.4

61.3

137

68.8

93.5

224.0

65.6

ERA

3.25

WHIP

1.304

50.5

K/9

5.50

58.1

FIP

2.88

95.7

FIP-

79.1

94.6

ERA+

111.8

65.6

sWAR

2.9

55.9

of 94 qualified 1984 pitchers (min 162 IP)

Career, era-adjusted

ERA+

109.6

71.4

sWAR

50.2

98.9

ERA+ measured against qualified careers (1,000+ IP), 1,334 of them; sWAR measured against every career in history, 24,011 of them. Only era-adjusted career stats carry a percentile — a raw career total gets a rank instead, because pooling the 1890s with the 2020s is a choice, not a measurement.

Season by season

Batting

Season	G	PA	AB	R	H	2B	3B	HR	RBI	BB	SO	SB	BA	OBP	SLG	OPS	wRC+	OPS+	wOBA	sWAR
1967	9	3	2	0	0	0	0	0	0	1	1	0	.000	.333	.000	.333	50.8	4.6	.250	-0.5
1968	35	97	91	3	7	1	0	1	4	3	62	0	.077	.106	.121	.227	-51.8	-31.6	.112	5.4
1969	32	89	84	1	4	0	0	0	1	1	46	0	.048	.059	.048	.106	-92.1	-69.8	.053	5.6
1970	30	86	70	5	6	1	0	0	4	8	46	0	.086	.179	.100	.279	-20.8	-22.2	.153	4.0
1971	26	60	50	3	8	0	0	0	0	3	25	0	.160	.222	.160	.382	7.8	11.5	.194	2.4
1972	34	56	47	1	4	0	0	0	1	0	18	0	.085	.085	.085	.170	-73.1	-50.6	.079	-0.3
1973	35	95	78	3	8	1	0	0	3	2	37	0	.103	.125	.115	.240	-44.6	-32.1	.117	4.6
1974	35	103	86	5	16	2	1	0	5	7	29	0	.186	.247	.233	.480	36.2	36.7	.237	3.4
1975	36	89	78	4	14	2	0	0	6	4	31	1	.179	.220	.205	.425	16.5	21.6	.208	2.6
1976	34	94	79	5	17	2	0	0	6	2	34	0	.215	.235	.241	.475	34.0	39.4	.226	4.6
1977	32	79	72	2	8	0	0	1	7	0	30	0	.111	.122	.153	.274	-37.8	-25.0	.125	2.6
1978	38	75	70	1	6	3	0	0	2	0	27	0	.086	.086	.129	.214	-59.3	-39.8	.097	1.2
1979	37	0	0	0	0	0	0	0	0	0	0	0	—	—	—	—	—	—	—	5.5
1980	38	0	0	0	0	0	0	0	0	0	0	0	—	—	—	—	—	—	—	3.1
1981	27	0	0	0	0	0	0	0	0	0	0	0	—	—	—	—	—	—	—	0.8
1982	42	0	0	0	0	0	0	0	0	0	0	0	—	—	—	—	—	—	—	2.1
1983	37	0	0	0	0	0	0	0	0	0	0	0	—	—	—	—	—	—	—	0.5
1984	36	89	74	2	8	0	0	0	3	1	23	0	.108	.120	.108	.228	-52.2	-35.6	.110	2.9
1985	19	37	34	1	3	0	0	0	4	1	9	0	.088	.111	.088	.199	-61.9	-44.0	.098	-0.3

Pitching

Season	G	GS	W	L	SV	CG	SHO	H	ER	BB	SO	HR	IP	ERA	WHIP	K/9	FIP	FIP-	ERA+	sWAR
1967	9	3	0	2	0	0	0	22	15	19	11	3	22.3	6.04	1.836	4.43	5.97	178.7	55.3	-0.5
1968	35	34	19	12	0	17	7	221	61	69	178	16	263.7	2.08	1.100	6.08	2.86	96.0	143.1	5.4
1969	32	32	17	9	0	16	6	187	61	68	180	14	241.0	2.28	1.058	6.72	2.81	77.9	158.6	5.6
1970	30	29	12	7	0	5	1	189	74	71	118	22	212.0	3.14	1.226	5.01	4.12	102.8	127.5	4.0
1971	26	24	6	11	0	4	0	160	56	51	96	12	165.7	3.04	1.274	5.22	3.27	96.2	111.6	2.4
1972	34	24	11	12	1	4	1	155	75	52	147	14	163.0	4.14	1.270	8.12	2.91	86.8	80.9	-0.3
1973	35	35	14	15	0	12	3	234	83	76	156	18	263.0	2.84	1.179	5.34	3.17	88.0	126.7	4.6
1974	35	35	15	11	0	13	0	258	99	85	188	16	265.0	3.36	1.294	6.38	2.99	84.2	105.7	3.4
1975	36	34	14	13	2	11	4	234	91	98	173	19	239.7	3.42	1.385	6.50	3.48	100.4	101.5	2.6
1976	34	32	21	10	0	17	3	205	74	66	200	19	247.3	2.69	1.096	7.28	2.84	85.8	123.1	4.6
1977	32	32	8	20	0	6	1	195	88	81	192	17	226.7	3.49	1.218	7.62	3.14	83.8	107.2	2.6
1978	38	32	3	15	2	3	0	221	98	84	160	17	235.3	3.75	1.296	6.12	3.37	96.9	92.9	1.2
1979	37	36	20	13	0	10	2	268	99	83	157	19	263.7	3.38	1.331	5.36	3.49	80.2	128.8	5.5
1980	38	34	16	13	2	8	0	252	109	69	149	24	243.3	4.03	1.319	5.51	3.73	87.1	106.2	3.1
1981	27	16	4	13	5	3	1	125	54	41	76	10	121.3	4.01	1.368	5.64	3.37	89.7	93.7	0.8
1982	42	19	11	7	3	3	1	194	74	38	88	9	173.3	3.84	1.338	4.57	3.04	74.9	105.6	2.1
1983	37	24	11	7	2	2	1	176	90	53	90	19	169.7	4.77	1.350	4.77	4.26	102.4	87.2	0.5
1984	36	34	14	15	0	3	1	232	81	60	137	8	224.0	3.25	1.304	5.50	2.88	79.1	111.8	2.9
1985	19	18	6	4	0	3	1	107	51	34	60	14	99.3	4.62	1.419	5.44	4.36	118.2	79.8	-0.3

sWAR is the season TOTAL for a player who both hit and pitched: the record book carries one figure per season, not a split, so the same number appears on both lines rather than being counted twice.

Career totals

Batting

612

1,052

915

109

RBI

418

.1191

OBP

.1513

SLG

.1410

OPS

.2923

Pitching

G (P)

612

230th-most career G (P)

527

40th-most career GS

222

77th-most career W

209

37th-most career L

140

257th-most career CG

SHO

88th-most career SHO

3,839

48th-most career IP

SO (P)

2,556

35th-most career SO (P)

BB allowed

1,198

53rd-most career BB allowed

ERA

3.359

347th-lowest career ERA

WHIP

1.2588

375th-lowest career WHIP

K/9

5.99

381st-highest career K/9

A total is called out only where it ranks in the all-time top 500; hover a figure for its rank and the size of the field it was ranked in. Ranks are absolute facts and carry no percentile — the population for "career home runs" would be an editorial choice, and the rank is not.

Best games

Batting

Date	Game	AB	R	H	2B	3B	HR	RBI	BB	TB
1974-09-21	NYM @ PIT Gameday	3	0	3	1	0	0	1	1	4
1974-09-16	NYM @ WSH Gameday	3	0	2	0	1	0	1	0	4
1968-09-18	CHC @ NYM Gameday	2	1	1	0	0	1	1	1	4
1977-05-17	SF @ NYM Gameday	4	1	1	0	0	1	1	0	4
1976-04-17	NYM @ PIT Gameday	4	1	2	1	0	0	2	0	3

Pitching

Date	Game	IP	H	R	ER	BB	SO	HR
1969-05-28	SD @ NYM Gameday	10.0	4	0	0	2	15	0
1980-06-23	KC @ MIN Gameday	9.0	10	1	1	2	15	0
1978-08-21	SF @ NYM Gameday	10.0	8	2	0	2	13	0
1969-09-08	CHC @ NYM Gameday	9.0	7	2	2	2	13	0
1976-09-16	STL @ NYM Gameday	9.0	4	1	1	3	13	1

Ranked from our own play-by-play game log, which begins in 1901 — not from the record book, so a career played outside it shows nothing here rather than a short list.

Honors

2× All-Star

Major awards only — the awards table also records Player of the Week, and forty of those would bury seven MVPs. Hover for the years.