Jerry Koosman had a 140-137 record with an ERA of 3.09, 1,799 strikeouts and 5 saves in 376 appearances for the Mets in his career.

	NAME	SEASON	TM	G	W	L	W%	GS	ERA	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Jerry Koosman J. Koosman	1967	NYM	9	0	2	.000	3	6.04	11	0	0	0	22.1	22	15	17	3	19	0	1	4	105	0	4.43	7.66	0.58	1.21	10.5	18.1	1.84	.264	6.85	181	5.85	182	8.87	-6.6
2	Jerry Koosman J. Koosman	1968	NYM	35	19	12	.613	34	2.08	178	17	7	0	263.2	221	61	72	16	69	8	0	7	1,058	8	6.08	2.36	2.58	0.55	16.8	6.5	1.10	.260	2.46	70	2.70	96	7.54	3.7
3	Jerry Koosman J. Koosman	1969	NYM	32	17	9	.654	32	2.28	180	16	6	0	241.0	187	61	66	14	68	4	0	11	957	7	6.72	2.54	2.65	0.52	18.8	7.1	1.06	.250	2.46	64	2.66	78	6.98	20.1
4	Jerry Koosman J. Koosman	1970	NYM	30	12	7	.632	29	3.14	118	5	1	0	212.0	189	74	87	22	71	2	0	14	884	7	5.01	3.01	1.66	0.93	13.3	8.0	1.23	.249	3.69	79	3.90	104	8.02	-3.6
5	Jerry Koosman J. Koosman	1971	NYM	26	6	11	.353	24	3.04	96	4	0	0	165.2	160	56	66	12	51	1	0	4	694	7	5.22	2.77	1.88	0.65	13.8	7.3	1.27	.277	3.59	90	3.17	96	8.69	2.4
6	Jerry Koosman J. Koosman	1972	NYM	34	11	12	.478	24	4.14	147	4	1	1	163.0	155	75	81	14	52	6	5	7	692	9	8.12	2.87	2.83	0.77	21.2	7.5	1.27	.298	4.47	122	2.77	85	8.56	8.8
7	Jerry Koosman J. Koosman	1973	NYM	35	14	15	.483	35	2.84	156	12	3	0	263.0	234	83	93	18	76	4	0	6	1,071	3	5.34	2.60	2.05	0.62	14.6	7.1	1.18	.264	3.18	80	3.17	89	8.01	11.4
8	Jerry Koosman J. Koosman	1974	NYM	35	15	11	.577	35	3.36	188	13	0	0	265.0	258	99	113	16	85	7	0	7	1,118	8	6.38	2.89	2.21	0.54	16.8	7.6	1.29	.294	3.84	97	2.98	84	8.76	16.6
9	Jerry Koosman J. Koosman	1975	NYM	36	14	13	.519	34	3.42	173	11	4	2	239.2	234	91	106	19	98	4	2	6	1,018	7	6.50	3.68	1.77	0.71	17.0	9.6	1.39	.297	3.98	98	3.44	98	8.79	1.9
10	Jerry Koosman J. Koosman	1976	NYM	34	21	10	.677	32	2.69	200	17	3	0	247.1	205	74	81	19	66	1	0	7	994	3	7.28	2.40	3.03	0.69	20.1	6.6	1.10	.263	2.95	80	2.82	83	7.46	16.4
11	Jerry Koosman J. Koosman	1977	NYM	32	8	20	.286	32	3.49	192	6	1	0	226.2	195	88	102	17	81	4	0	8	940	2	7.62	3.22	2.37	0.68	20.4	8.6	1.22	.276	4.05	94	3.13	82	7.74	17.6
12	Jerry Koosman J. Koosman	1978	NYM	38	3	15	.167	32	3.75	160	3	0	2	235.1	221	98	110	17	84	8	6	11	986	5	6.12	3.21	1.90	0.65	16.2	8.5	1.30	.285	4.21	109	3.33	95	8.45	4.4
	Total			376	140	137	.505	346	3.09	1,799	108	26	5	2544.2	2,281	875	994	187	820	49	14	92	10,517	66	6.36	2.90	2.19	0.66	17.1	7.8	1.22	.273	3.52	89	3.12	90	8.07	93.1