Jerry Koosman

Position: Pitcher

Bats: Right • Throws: Left

6-2, 205lb (188cm, 92kg)

Born: December 23, 1942 in Appleton, MN us

High School: West Central School of Agriculture (Morris, MN)

School: University of Minnesota Morris (Morris, MN)

Debut: April 14, 1967 (Age 24-112d, 12,558th in major league history)
vs. PHI 2.2 IP, 0 H, 2 SO, 2 BB, 0 ER

Last Game: August 21, 1985 (Age 42-241d)
vs. LAD 0.2 IP, 5 H, 0 SO, 2 BB, 5 ER, L

Rookie Status: Exceeded rookie limits during 1968 season

Full Name: Jerome Martin Koosman

Nicknames: Kooz

View Player Info from the B-R Bullpen

View Player Bio from the SABR BioProject

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SUMMARY

Career

WAR

53.6

222

209

ERA

3.36

612

527

3839.1

2556

WHIP

1.259

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Team Record in Appearances: 21-16 / in Starts: 14-10

Days of Rest

Run Support in Games Started

Total runs in Starts, Avg. is per 27 outs

Inning/Score Appearance Matrix

Multiple inning appearances: 35, Entered with runners on base: 10

1983 Pitching Game Log

Click two rows to sum games (Clear)

1983 Pitching Game Log
Rk	Gcar	Gtm	Date	Tm		Opp	Rslt	Inngs	Dec	DR	IP	H	R	ER	BB	SO	HR	HBP	ERA	FIP	BF	GB	FB	LD	PU	Unk	GSc	IR	IS	SB	CS	PO	AB	2B	3B	IBB	GDP	SF	ROE	aLI	WPA	acLI	cWPA	RE24	Entered	Exited
1	521	4	Apr 8	CHW	@	DET	W,6-3	7-GF	S(1)	99	3.0	3	0	0	0	1	0	0	0.00	2.09	12	6	2	0	0	3		0	0	0	0	0	12	1	0	0	0	0	0	.92	0.141	.87	0.08%	1.46	7b --- 0 out a3	9b end a 3
2	522	7	Apr 14	CHW		BAL	W,12-11	6-7		5	1.0	2	3	3	1	0	0	0	6.75	3.01	6	1	2	0	0	2		0	0	0	0	0	5	0	0	0	0	0	0	.77	-0.043	.78	-0.03%	-0.80	6t --- 1 out a5	7t 123 1 out a5
3	523	8	Apr 15	CHW		DET	L,0-6	7-8		0	1.1	2	2	2	0	1	0	0	8.44	2.57	6	1	2	0	0	2		1	0	0	0	0	6	1	0	0	0	0	0	.25	0.000	.28	0.00%	-0.11	7t -2- 1 out d4	8t -2- 2 out d5
4	524	12	Apr 20	CHW		NYY	L,4-6	6-8		4	2.2	2	0	0	2	2	0	0	5.63	2.88	12	3	3	0	0	2		3	3	0	0	0	9	0	0	0	0	1	0	.22	-0.056	.28	-0.04%	-0.36	6t 123 1 out d3	8t 3 out d6
5	525	14	Apr 23	CHW	@	CLE	L,3-6	5-GF(8)		2	3.1	2	0	0	0	2	0	0	3.97	2.49	11	3	4	0	0	2		1	0	0	0	0	11	0	0	0	1	0	0	.08	0.017	.09	0.01%	1.94	5b --3 2 out d6	8b end d 3
May				Tm		Opp	Rslt	Inngs	Dec	DR	IP	H	R	ER	BB	SO	HR	HBP	ERA	FIP	BF	GB	FB	LD	PU	Unk	GSc	IR	IS	SB	CS	PO	AB	2B	3B	IBB	GDP	SF	ROE	aLI	WPA	acLI	cWPA	RE24	Entered	Exited
6	526	20	May 2	CHW		MIL	L,4-8	4-7		8	2.2	2	2	2	2	1	0	0	4.50	2.83	12	2	5	2	0	2		1	0	0	0	0	10	0	0	0	0	0	0	.75	-0.040	.74	-0.02%	-1.13	4t 1-- 2 out d3	7t 12- 1 out d4
7	527	21	May 3	CHW		MIL	W,7-6	6-7	H(1)	0	1.0	2	2	2	1	0	1	0	5.40	3.89	6	1	2	0	0	2		2	0	0	0	0	5	0	0	0	0	0	0	1.09	0.023	1.02	0.01%	-1.27	6t 12- 2 out a1	7t 1-- 2 out a3
8	528	23	May 6	CHW		CLE	W,8-3	5-GF	W(1-0)	2	4.1	4	2	2	3	1	1	0	5.12	4.67	19	7	4	1	0	4		1	0	0	1	1	16	2	0	1	0	0	0	.39	0.102	.44	0.07%	0.42	5t -2- 2 out tie	9t end a 5
9	529	27	May 11	CHW		TOR	L,1-3	10-GF(10)		4	0.2	1	0	0	0	0	0	0	4.95	4.61	2	0	1	1	0	1		1	0	0	0	0	2	0	0	0	0	0	0	.53	0.019	.59	0.01%	0.54	10t 1-- 1 out d2	10t end d 2
10	530	31	May 17(1)	CHW	@	BAL	L,2-7	7-GF(8)		5	1.2	1	1	1	1	2	1	0	4.98	5.02	7	0	3	1	0	1		2	2	0	0	0	6	0	0	0	0	0	0	.14	-0.061	.16	-0.04%	-1.33	7b 1-3 1 out d2	8b end d 5
11	531	38	May 24	CHW		BOS	W,12-4	GS-6	W(2-0)	6	6.0	8	4	4	1	2	1	0	5.20	4.96	25	9	5	1	0	8	41			0	0	0	24	1	0	0	2	0	0	.43	-0.142	.35	-0.07%	-0.87	1t start tie	6t 3 out a8
12	532	43	May 29	CHW		TEX	W,8-3	GS-6	W(3-0)	4	6.0	6	2	2	1	6	0	0	4.81	4.30	25	6	6	0	0	6	57			2	0	0	23	1	0	0	0	1	0	.74	0.118	.69	0.07%	1.13	1t start tie	6t 3 out a6
Jun				Tm		Opp	Rslt	Inngs	Dec	DR	IP	H	R	ER	BB	SO	HR	HBP	ERA	FIP	BF	GB	FB	LD	PU	Unk	GSc	IR	IS	SB	CS	PO	AB	2B	3B	IBB	GDP	SF	ROE	aLI	WPA	acLI	cWPA	RE24	Entered	Exited
13	533	48	Jun 3	CHW		KCR	W,2-0	SHO	W(4-0)	4	9.0	3	0	0	0	3	0	1	3.80	3.90	31	10	14	1	0	3	84			0	0	0	30	0	0	0	0	0	0	1.00	0.587	1.40	0.50%	4.70	1t start tie	9t 3 out a2
14	534	53	Jun 8	CHW	@	CAL	L,4-7	GS-5	L(4-1)	4	4.2	9	6	6	1	0	1	0	4.56	4.13	24	8	6	1	0	9	21			0	0	0	23	0	0	0	0	0	0	.94	-0.354	1.58	-0.36%	-2.84	1b start a 1	5b -2- 2 out d2
15	535	58	Jun 12(2)	CHW	@	OAK	W,8-1	CG	W(5-1)	3	9.0	7	1	0	1	5	0	0	3.83	3.78	34	8	13	0	0	7	75			2	1	1	33	1	0	0	0	0	0	.53	0.082	.50	0.05%	3.20	1b start tie	9b 3 out a7
16	536	61	Jun 17	CHW		OAK	W,6-3	GS-4		4	3.1	7	3	3	2	0	0	1	4.07	3.88	19	4	5	0	0	7	32			1	0	0	16	0	1	0	0	0	0	1.18	-0.244	1.30	-0.16%	-2.51	1t start tie	4t 123 1 out d2
17	537	66	Jun 22	CHW		SEA	W,6-3	GS-8	W(6-1)	4	7.0	6	3	3	4	5	0	1	4.05	3.84	32	12	4	0	0	6	54			2	0	0	26	2	0	0	0	0	0	1.25	-0.006	1.63	-0.01%	0.27	1t start tie	8t 1-- 0 out a2
18	538	71	Jun 27	CHW	@	SEA	W,7-4	GS-6		4	5.2	6	3	3	3	6	1	0	4.11	3.89	26	2	9	0	0	6	48			2	0	0	23	1	0	0	0	0	0	1.04	0.129	1.62	0.12%	0.90	1b start tie	6b 1-- 2 out a2
Jul				Tm		Opp	Rslt	Inngs	Dec	DR	IP	H	R	ER	BB	SO	HR	HBP	ERA	FIP	BF	GB	FB	LD	PU	Unk	GSc	IR	IS	SB	CS	PO	AB	2B	3B	IBB	GDP	SF	ROE	aLI	WPA	acLI	cWPA	RE24	Entered	Exited
19	539	76	Jul 3	CHW	@	MIN	L,3-4	GS-8		5	8.0	6	3	2	1	7	2	1	3.92	4.00	32	10	7	1	0	6	66			0	0	0	30	1	0	0	0	0	0	.82	0.017	1.45	0.02%	1.14	1b start tie	8b 3 out tie
20	540	79	Jul 9	CHW		MIL	W,8-3	GS-7	W(7-1)	5	6.1	9	3	3	0	5	0	0	3.95	3.79	27	10	3	0	0	9	48			0	0	1	27	3	1	0	0	0	0	.91	0.000	1.44	0.00%	-0.28	1t start tie	7t 12- 1 out a3
21	541	84	Jul 14	CHW		TOR	L,0-8	GS-7	L(7-2)	4	6.2	6	6	4	3	2	1	0	4.05	3.91	28	9	8	1	0	6	41			0	1	0	25	0	0	0	1	0	1	.56	-0.158	1.34	-0.23%	-0.79	1t start tie	7t 12- 2 out d4
22	542	89	Jul 19	CHW	@	CLE	L,4-5	GS-5		4	4.2	8	4	4	0	2	0	0	4.22	3.82	21	4	7	0	0	8	34			0	1	0	21	3	0	0	0	0	0	1.17	-0.253	3.07	-0.40%	-1.63	1b start tie	5b 1-- 2 out tie
23	543	94	Jul 24	CHW	@	MIL	L,7-8	GS-5		4	4.1	7	6	6	3	1	1	0	4.57	3.97	22	5	6	0	0	7	23			0	0	0	19	1	0	0	0	0	0	1.01	-0.317	2.89	-0.54%	-3.16	1b start a 1	5b 1-- 1 out tie
24	544	99	Jul 29	CHW		NYY	W,7-2	GS-8	W(8-2)	4	8.0	5	2	2	0	5	2	0	4.40	4.02	29	11	8	1	0	5	69			0	0	0	29	0	0	0	0	0	0	.98	0.304	2.98	0.56%	2.18	1t start tie	8t 3 out a2
Aug				Tm		Opp	Rslt	Inngs	Dec	DR	IP	H	R	ER	BB	SO	HR	HBP	ERA	FIP	BF	GB	FB	LD	PU	Unk	GSc	IR	IS	SB	CS	PO	AB	2B	3B	IBB	GDP	SF	ROE	aLI	WPA	acLI	cWPA	RE24	Entered	Exited
25	545	104	Aug 3	CHW		DET	L,3-6	GS-2	L(8-3)	4	1.1	7	5	5	1	1	1	0	4.76	4.13	12	0	3	0	0	7	20			0	0	0	11	3	0	0	0	0	0	.93	-0.336	2.97	-0.64%	-4.23	1t start tie	2t --- 1 out d5
26	546	110	Aug 8(2)	CHW	@	DET	L,2-7	GS-7	L(8-4)	4	6.1	6	7	7	3	5	1	1	5.03	4.19	29	5	9	0	0	6	35			0	0	0	24	0	1	1	0	1	0	.63	-0.288	2.05	-0.57%	-4.11	1b start tie	7b 1-- 1 out d5
27	547	114	Aug 13	CHW		BAL	L,2-5	GS-8	L(8-5)	4	7.1	7	4	4	1	3	2	0	5.03	4.29	30	8	11	0	6	7	50			0	0	0	28	2	0	0	1	0	1	1.37	-0.199	3.96	-0.35%	-0.10	1t start tie	8t --- 1 out d2
28	548	120	Aug 19(2)	CHW	@	TEX	W,6-1	GS-5	W(9-5)	5	5.0	4	1	1	2	2	0	0	4.90	4.24	20	6	6	2	0	4	55			0	0	0	17	1	0	0	1	0	0	1.45	0.167	3.73	0.26%	1.43	1b start tie	5b 3 out a2
29	549	124	Aug 23	CHW	@	KCR	L,2-10	GS-6	L(9-6)	3	5.0	5	5	4	2	2	0	1	4.99	4.23	23	6	7	0	0	5	39			0	0	0	19	3	0	0	0	1	0	.96	-0.223	1.51	-0.21%	-1.87	1b start tie	6b 1-- 0 out d2
30	550	129	Aug 28	CHW		BOS	W,6-2	GS-7	W(10-6)	4	7.0	7	2	2	2	3	0	0	4.87	4.15	28	8	9	2	0	6	56			0	0	0	26	2	0	0	2	0	0	1.02	0.245	1.67	0.24%	1.66	1t start tie	7t 3 out a2
Sep/Oct				Tm		Opp	Rslt	Inngs	Dec	DR	IP	H	R	ER	BB	SO	HR	HBP	ERA	FIP	BF	GB	FB	LD	PU	Unk	GSc	IR	IS	SB	CS	PO	AB	2B	3B	IBB	GDP	SF	ROE	aLI	WPA	acLI	cWPA	RE24	Entered	Exited
31	551	134	Sep 2	CHW	@	BOS	L,1-5	GS-4	L(10-7)	4	3.1	7	5	5	3	3	1	0	5.07	4.23	20	3	4	1	0	7	26			0	0	0	17	1	0	0	0	0	0	1.04	-0.212	.14	-0.02%	-2.46	1b start tie	4b 123 1 out d2
32	552	139	Sep 7	CHW		OAK	W,8-7	GS-5		4	4.2	5	5	5	3	3	0	0	5.21	4.21	21	9	6	1	0	0	34			3	1	1	16	0	0	0	0	1	0	1.00	-0.140	.01	0.00%	-0.84	1t start tie	5t 12- 2 out d2
33	553	148	Sep 17	CHW		SEA	W,4-3	GS-9		9	8.0	6	2	1	1	5	0	0	5.00	4.09	30	15	3	2	0	6	68			0	0	0	29	1	0	0	0	0	0	1.11	0.402	.00	0.00%	2.79	1t start tie	9t 1-- 0 out a2
34	554	153	Sep 22	CHW	@	CAL	W,3-2	GS-7	W(11-7)	4	7.0	6	2	2	2	1	2	0	4.90	4.21	31	10	12	0	0	6	56			0	0	0	28	1	0	0	0	0	2	1.12	0.149	.00	0.00%	1.48	1b start tie	7b 3 out tie
35	555	158	Sep 28	CHW	@	OAK	W,5-3	6-7	H(2)	5	2.0	1	0	0	3	3	0	0	4.84	4.21	10	1	2	0	0	1		0	0	0	0	0	7	0	0	0	0	0	0	1.33	0.101	.00	0.00%	0.93	6b --- 0 out a3	7b 3 out a3
36	556	161	Oct 1	CHW	@	SEA	W,9-3	8-GF	S(2)	2	1.2	1	0	0	0	0	0	0	4.79	4.20	6	2	3	0	0	1		2	0	0	0	0	6	1	0	0	0	0	0	.83	0.164	.00	0.00%	1.95	8b -23 1 out a3	9b end a 6
37	557	162	Oct 2	CHW	@	SEA	W,3-0	8-8	H(3)	0	0.2	0	0	0	0	0	0	0	4.77	4.19	2	1	1	0	0	0		1	0	0	0	0	2	0	0	0	0	0	0	2.23	0.121	.00	0.00%	0.70	8b -2- 1 out a2	8b 3 out a2
							21-16		W-L:11-7,Sv:2,Hld:3	3.9	169.2	176	96	90	53	90	19	6	4.77	4.19	730	1.00		5%	1%	170	47	15	33%	12	5	4	661	33	3	2	8	5	4	.90	-0.184	1.36	-1.68%	-1.85

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