pitchers most seasons with 20 wins 1948 to 2020

Between the 1948 and 2020 seasons, Warren Spahn played the most seasons with 20+ pitcher wins, with 12 seasons.

Interpreted as:

pitchers most seasons with 20 or more wins 1948 to 2020

	NAME	SEAS	W	L	W%	G	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	Warren Spahn W. Spahn	12	257	142	.644	459	421	2.93	1,693	266	46	15	3379.1	3,042	1,100	1,234	276	925	23	29	46	13,808	47	4.51	2.46	1.83	0.74	12.3	6.7	1.17	.254	3.29	80	3.40	93	8.10	94.9
2	Jim Palmer J. Palmer	8	169	85	.665	306	304	2.48	1,408	163	42	2	2410.2	1,955	665	739	160	749	23	2	27	9,696	50	5.26	2.80	1.88	0.60	14.5	7.7	1.12	.244	2.76	71	3.23	89	7.30	107.9
3	Fergie Jenkins F. Jenkins	7	152	96	.613	277	275	2.97	1,715	169	30	1	2164.1	1,877	715	789	201	423	42	2	52	8,707	34	7.13	1.76	4.05	0.84	19.7	4.9	1.06	.265	3.28	79	2.76	77	7.81	197.9
4	Bob Lemon B. Lemon	7	151	82	.648	282	247	3.04	888	157	29	14	1971.1	1,700	665	770	125	808	38	25	2	8,246	36	4.05	3.69	1.10	0.57	10.8	9.8	1.27	.247	3.52	77	3.71	96	7.76	32.1
5	Roger Clemens R. Clemens	6	126	35	.783	200	200	2.59	1,479	49	18	0	1483.0	1,198	427	473	86	432	44	0	9	5,997	47	8.98	2.62	3.42	0.52	24.7	7.2	1.10	.281	2.87	58	2.67	62	7.27	271.4
6	Steve Carlton S. Carlton	6	137	56	.710	225	224	2.75	1,447	110	25	0	1755.0	1,481	536	598	116	522	14	0	45	7,109	57	7.42	2.68	2.77	0.59	20.4	7.3	1.14	.272	3.07	76	2.73	76	7.59	165.6
7	Juan Marichal J. Marichal	6	140	55	.718	225	220	2.30	1,339	146	36	1	1818.1	1,491	464	553	140	295	24	5	37	7,175	24	6.63	1.46	4.54	0.69	18.7	4.1	0.98	.251	2.74	68	2.56	78	7.38	146.5
8	Robin Roberts R. Roberts	6	138	78	.639	253	232	2.93	964	161	24	14	1937.2	1,763	631	703	177	356	19	18	3	7,811	17	4.48	1.65	2.71	0.82	12.3	4.6	1.09	.252	3.27	74	3.24	82	8.19	158
9	Tom Glavine T. Glavine	5	103	40	.720	171	171	2.88	750	28	13	0	1181.1	1,058	378	423	76	368	12	0	28	4,848	22	5.71	2.80	2.04	0.58	15.5	7.6	1.21	.270	3.22	71	3.50	86	8.06	76.5
10	Catfish Hunter C. Hunter	5	111	49	.694	191	190	2.65	816	96	25	0	1471.2	1,163	434	486	137	348	17	1	20	5,831	15	4.99	2.13	2.34	0.84	14.0	6.0	1.03	.227	2.97	79	3.36	97	7.11	16.1
11	Tom Seaver T. Seaver	5	109	44	.712	176	174	2.36	1,185	86	24	0	1363.1	1,043	357	387	95	374	20	2	25	5,398	35	7.82	2.47	3.17	0.63	22.0	6.9	1.04	.255	2.55	67	2.56	74	6.89	138.9
12	Gaylord Perry G. Perry	5	110	56	.663	192	190	2.65	1,019	98	19	1	1510.0	1,258	444	503	93	371	33	1	42	6,033	35	6.07	2.21	2.75	0.55	16.9	6.1	1.08	.258	3.00	74	2.79	78	7.50	127.8
13	Bob Gibson B. Gibson	5	106	53	.667	176	174	2.38	1,306	119	31	1	1492.0	1,164	394	444	90	426	37	1	33	5,996	33	7.88	2.57	3.07	0.54	21.8	7.1	1.07	.260	2.68	65	2.48	72	7.02	160.7
14	Early Wynn E. Wynn	5	108	55	.663	194	175	2.90	778	92	19	9	1364.0	1,126	440	497	101	532	18	18	12	5,650	18	5.13	3.51	1.46	0.67	13.8	9.4	1.22	.243	3.28	77	3.47	93	7.43	42.5
15	Dave Stewart D. Stewart	4	84	45	.651	146	146	3.20	718	41	7	0	1061.2	950	377	421	77	367	20	0	8	4,428	46	6.09	3.11	1.96	0.65	16.2	8.3	1.24	.269	3.57	83	3.48	90	8.05	47
16	Wilbur Wood W. Wood	4	90	69	.566	184	181	2.86	771	85	20	1	1390.1	1,283	442	523	101	307	30	3	18	5,653	29	4.99	1.99	2.51	0.65	13.6	5.4	1.14	.266	3.39	80	3.05	85	8.31	84.8
17	Mike Cuellar M. Cuellar	4	89	38	.701	155	155	3.01	602	80	18	0	1150.0	989	385	437	99	312	5	0	17	4,628	14	4.71	2.44	1.93	0.77	13.0	6.7	1.13	.247	3.42	85	3.44	94	7.74	28.9
18	Dave McNally D. McNally	4	87	31	.737	146	145	2.82	644	56	11	0	1062.0	872	333	359	98	275	27	0	12	4,248	22	5.46	2.33	2.34	0.83	15.2	6.5	1.08	.242	3.04	82	3.34	94	7.39	26.1
19	Luis Tiant L. Tiant	4	84	47	.641	145	143	2.75	777	86	19	0	1120.2	924	343	371	94	297	18	0	12	4,485	7	6.24	2.39	2.62	0.75	17.3	6.6	1.09	.252	2.98	73	3.09	83	7.42	73.6
20	Roy Halladay R. Halladay	3	63	28	.692	103	102	2.83	629	27	8	0	762.2	704	240	273	68	101	27	0	5	3,051	15	7.42	1.19	6.23	0.80	20.6	3.3	1.06	.286	3.22	65	3.09	72	8.31	102.6
21	Curt Schilling C. Schilling	3	66	19	.776	103	102	3.15	812	14	2	0	742.2	661	260	265	89	107	9	0	1	2,948	13	9.84	1.30	7.59	1.08	27.5	3.6	1.03	.296	3.21	70	2.85	65	8.01	125.4
22	Randy Johnson R. Johnson	3	65	15	.813	100	98	2.37	997	16	8	0	722.2	525	190	212	65	219	41	1	5	2,879	15	12.42	2.73	4.55	0.81	34.6	7.6	1.03	.295	2.64	53	2.52	57	6.54	152.2
23	Jack Morris J. Morris	3	62	27	.697	106	106	3.53	587	41	8	0	801.1	708	314	336	88	245	13	0	14	3,301	39	6.59	2.75	2.40	0.99	17.8	7.4	1.19	.262	3.77	88	3.69	90	7.95	37.6
24	Ron Guidry R. Guidry	3	68	18	.791	100	99	2.78	547	48	14	0	783.0	662	242	264	67	174	3	0	7	3,114	14	6.29	2.00	3.14	0.77	17.6	5.6	1.07	.256	3.03	72	3.06	78	7.61	74.1
25	Tommy John T. John	3	63	25	.716	104	103	3.07	312	44	12	0	762.0	763	260	306	34	171	13	1	5	3,111	22	3.69	2.02	1.82	0.40	10.0	5.5	1.23	.282	3.61	78	3.22	80	9.01	69.2