Kid Nichols played the most seasons with 30+ pitcher wins, with 7 seasons.

Interpreted as:

most seasons with 30 or more wins by a pitcher

	NAME	SEAS	W	L	W%	G	GS	ERA	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Kid Nichols K. Nichols	7	223	97	.697	352	314	3.02	1,006	291	24	12	2838.2	2,796	954	1,459	98	717	75	36	11,887	93	3.19	2.27	1.40	0.31	8.5	6.0	1.24	.270	4.63	70	3.62	83	8.86	235.7
2	John Clarkson J. Clarkson	6	242	112	.684	367	361	2.58	1,506	342	29	4	3176.2	2,901	911	1,557	110	751	50	6	13,236	119	4.27	2.13	2.01	0.31	11.4	5.7	1.15	.258	4.41	72	3.17	86	8.22	229.5
3	Tim Keefe T. Keefe	6	222	108	.673	343	343	2.31	1,741	333	28	0	2948.0	2,392	758	1,243	42	581	23	1	11,921	175	5.32	1.77	3.00	0.13	14.6	4.9	1.01	.247	3.79	71	2.72	82	7.30	180.6
4	Cy Young C. Young	5	170	59	.742	241	219	2.46	709	205	22	1	2001.1	1,842	548	813	40	386	46	21	8,117	38	3.19	1.74	1.84	0.18	8.7	4.8	1.11	.260	3.66	60	3.15	78	8.28	202
5	Tony Mullane T. Mullane	5	165	109	.602	286	273	2.72	1,033	266	22	1	2434.0	2,186	735	1,259	33	528	32	14	10,187	200	3.82	1.95	1.96	0.12	10.1	5.2	1.12	.253	4.66	80	3.22	95	8.08	49.9
6	Will White W. White	5	190	104	.646	299	298	2.12	782	295	30	0	2661.0	2,516	627	1,296	46	362		1	11,173	157	2.64	1.22	2.16	0.16	7.0	3.2	1.08	.248	4.38	77	3.00	107	8.51	-85.4
7	Christy Mathewson C. Mathewson	4	131	45	.744	192	169	1.75	944	136	26	11	1463.1	1,160	285	426	20	284	18	20	5,702	36	5.81	1.75	3.32	0.12	16.6	5.0	0.99	.257	2.62	62	1.95	67	7.13	150
8	Amos Rusie A. Rusie	4	134	85	.612	236	221	2.85	1,044	206	15	3	1967.1	1,678	623	1,022	38	950	51	15	8,502	77	4.78	4.35	1.10	0.17	12.3	11.2	1.34	.255	4.68	74	3.69	92	7.68	64.4
9	Gus Weyhing G. Weyhing	4	123	78	.612	214	199	3.08	811	185	16	3	1758.2	1,640	601	965	46	720	100	15	7,714	98	4.15	3.68	1.13	0.24	10.5	9.3	1.34	.264	4.94	81	3.53	94	8.39	44.7
10	Silver King S. King	4	142	70	.670	224	217	2.70	759	202	14	2	1893.2	1,718	568	924	30	473	83	5	7,911	89	3.61	2.25	1.60	0.14	9.6	6.0	1.16	.257	4.39	67	3.19	82	8.17	158.3
11	Larry Corcoran L. Corcoran	4	143	71	.668	224	216	2.28	906	208	18	2	1923.1	1,740	487	990	58	375		8	8,004	92	4.24	1.75	2.42	0.27	11.3	4.7	1.10		4.63	78	2.98	97	8.14	40
12	Jim McCormick J. McCormick	4	152	94	.618	250	248	2.29	975	238	23	0	2170.0	1,984	551	976	53	367		3	8,866	65	4.04	1.52	2.66	0.22	11.0	4.1	1.08		4.05	81	2.81	99	8.23	0.7
13	Mickey Welch M. Welch	4	150	84	.641	245	243	2.43	998	237	16	1	2123.1	1,989	574	1,045	36	520		3	8,871	155	4.23	2.20	1.92	0.15	11.3	5.9	1.18		4.43	86	2.96	99	8.43	9.7
14	Tommy Bond T. Bond	4	154	68	.694	226	226	1.97	595	219	32	0	2017.0	1,999	441	840	20	106		2	8,136	52	2.65	0.47	5.61	0.09	7.3	1.3	1.04		3.75	79	2.31	93	8.92	43.2
15	Grover Alexander G. Alexander	3	94	35	.729	142	131	1.54	608	108	36	6	1153.1	912	197	283	13	170	26	10	4,464	6	4.74	1.33	3.58	0.10	13.6	3.8	0.94	.247	2.21	55	1.93	70	7.12	105.9
16	William Hutchinson W. Hutchinson	3	121	80	.602	212	194	2.76	864	188	14	4	1786.0	1,584	547	914	57	567	33	18	7,516	72	4.35	2.86	1.52	0.29	11.5	7.5	1.20	.255	4.61	79	3.08	84	7.98	125.2
17	Bob Caruthers B. Caruthers	3	110	38	.743	153	146	2.51	474	141	15	1	1314.2	1,197	366	575	22	247	13	7	5,409	62	3.24	1.69	1.92	0.15	8.8	4.6	1.10	.254	3.94	71	3.14	91	8.19	43.6
18	Ed Morris E. Morris	3	114	57	.667	179	178	2.34	926	173	22	1	1566.0	1,249	407	648	13	270		1	6,276	80	5.32	1.55	3.43	0.07	14.8	4.3	0.97	.246	3.72	75	2.57	85	7.18	57.9
19	Bobby Mathews B. Mathews	3	90	48	.652	141	141	2.75	775	135	6	0	1234.0	1,191	377	691	24	137		0	5,163	53	5.65	1.00	5.66	0.18	15.0	2.7	1.08	.278	5.04	82	2.54	77	8.69	109.3
20	Old Hoss Radbourn O. Hoss Radbourn	3	140	56	.714	205	192	1.81	957	189	21	3	1777.0	1,513	357	704	31	205		13	7,128	93	4.85	1.04	4.67	0.16	13.4	2.9	0.97		3.57	63	2.63	87	7.66	59.7
21	Pud Galvin P. Galvin	3	129	78	.623	214	213	2.33	784	208	23	0	1885.2	1,827	489	920	35	144		1	7,731	67	3.74	0.69	5.44	0.17	10.1	1.9	1.05		4.39	79	2.74	89	8.72	89.2
22	Walter Johnson W. Johnson	2	69	19	.784	98	73	1.27	546	63	18	4	715.0	491	101	145	11	114	25	23	2,684	13	6.87	1.43	4.79	0.14	20.3	4.2	0.85	.241	1.83	40	1.96	63	6.18	91.9
23	Joe McGinnity J. McGinnity	2	66	28	.702	106	92	2.03	315	82	12	7	842.0	698	190	265	12	195	32	13	3,374	7	3.37	2.08	1.62	0.13	9.3	5.8	1.06	.243	2.83	67	2.84	94	7.46	18.4
24	Frank Killen F. Killen	2	66	32	.673	107	98	3.53	233	82	7	0	847.1	877	332	479	19	259	29	7	3,634	19	2.47	2.75	0.90	0.20	6.4	7.1	1.34	.277	5.09	81	4.03	92	9.32	27.6
25	Jack Stivetts J. Stivetts	2	68	38	.642	118	104	2.95	439	85	6	2	855.2	703	280	460	27	403	28	14	3,689	43	4.62	4.24	1.09	0.28	11.9	10.9	1.29	.242	4.84	81	3.38	94	7.39	30.9