Phil Niekro has won the most career games by a pitcher 30 or older, with 287 wins.

Interpreted as:

most regular-season wins by a pitcher after turning 30 years old

	NAME	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	H/9
1	Phil Niekro P. Niekro	287	247	.537	702	661	3.45	2,999	220	39	10	4800.1	4,516	1,840	2,116	447	1,653	105	27	72	20,217	179	5.62	3.10	1.81	0.84	14.8	8.2	1.29	.271	3.97	8.47
2	Warren Spahn W. Spahn	277	186	.598	566	499	3.09	1,925	285	48	22	3952.1	3,678	1,356	1,501	345	1,021	34	53		16,206	53	4.38	2.32	1.89	0.79	11.9	6.3	1.19	.259	3.42	8.38
3	Gaylord Perry G. Perry	240	196	.550	532	527	3.11	2,554	244	43	2	4018.2	3,739	1,389	1,611	304	1,044	82	5	101	16,481	111	5.72	2.34	2.45	0.68	15.5	6.3	1.19	.275	3.61	8.37
4	Randy Johnson R. Johnson	239	110	.685	458	445	3.10	3,803	76	30	1	3105.0	2,535	1,070	1,203	321	893	138	5	31	12,611	63	11.02	2.59	4.26	0.93	30.2	7.1	1.10	.297	3.49	7.35
5	Jamie Moyer J. Moyer	235	155	.603	555	527	4.19	2,006	26	8	0	3374.0	3,465	1,571	1,682	443	873	127	6	48	14,281	35	5.35	2.33	2.30	1.18	14.0	6.1	1.29	.279	4.49	9.24
6	Early Wynn E. Wynn	217	150	.591	474	420	3.34	1,889	191	40	13	3132.2	2,747	1,163	1,298	266	1,258	48	44		13,166	35	5.43	3.61	1.50	0.76	14.3	9.6	1.28	.256	3.73	7.89
7	Lefty Grove L. Grove	213	89	.705	394	310	3.05	1,430	216	27	31	2686.1	2,657	909	1,064	121	731	25	73		11,307	20	4.79	2.45	1.96	0.41	12.6	6.5	1.26	.282	3.56	8.90
8	Grover Alexander G. Alexander	213	133	.616	412	367	2.82	1,001	252	37	17	3081.1	3,101		1,170	123	452	21	33		12,534	20	2.92	1.32	2.21	0.36	8.0	3.6	1.15	.272	3.42	9.06
9	Roger Clemens R. Clemens	208	116	.642	446	445	3.34	2,864	32	13	0	2960.1	2,555	1,099	1,208	238	1,046	111	0	29	12,329	97	8.71	3.18	2.74	0.72	23.2	8.5	1.22	.287	3.67	7.77
10	Jack Quinn J. Quinn	206	183	.530	640	374	3.29	1,103	200	28	53	3295.0	3,576		1,504	93	712	77	179			48	3.01	1.94	1.55	0.25		5.5	1.30	.316	4.11	9.77
11	Greg Maddux G. Maddux	204	133	.605	440	440	3.36	1,883	39	15	0	2866.0	2,830	1,071	1,190	244	436	76	0	93	11,674	33	5.91	1.37	4.32	0.77	16.1	3.7	1.14	.286	3.74	8.89
12	Nolan Ryan N. Ryan	202	176	.534	513	513	3.24	3,629	106	31	0	3451.0	2,584	1,243	1,421	211	1,615	96	0	53	14,388	195	9.46	4.21	2.25	0.55	25.2	11.2	1.22	.269	3.71	6.74
13	Dazzy Vance D. Vance	197	136	.592	431	345	3.22	2,027	216	29	12	2934.2	2,773	1,050	1,225	131	819	74	47		12,227	36	6.22	2.51	2.47	0.40	16.6	6.7	1.22	.288	3.76	8.50
14	Steve Carlton S. Carlton	196	139	.585	431	417	3.34	2,412	123	27	1	3021.2	2,704	1,121	1,286	258	1,048	27	6	82	12,535	105	7.18	3.12	2.30	0.77	19.2	8.4	1.24	.278	3.83	8.05
15	Tommy John T. John	190	133	.588	454	429	3.56	1,137	99	23	1	2872.0	3,082	1,137	1,295	177	702	54	15	43	12,065	102	3.56	2.20	1.62	0.55	9.4	5.8	1.32	.291	4.06	9.66
16	David Wells D. Wells	188	119	.612	415	412	4.26	1,721	52	12	0	2698.1	2,942	1,278	1,369	332	511	68	0	39	11,355	60	5.74	1.70	3.37	1.11	15.2	4.5	1.28	.299	4.57	9.81
17	Don Sutton D. Sutton	185	143	.564	442	438	3.43	1,836	79	22	2	2992.1	2,724	1,140	1,250	302	752	38	3	48	12,297	54	5.52	2.26	2.44	0.91	14.9	6.1	1.16	.259	3.76	8.19
18	Red Faber R. Faber	183	167	.523	492	369	3.46	1,009	205	18	16	3072.2	3,230		1,439	100	887	66	85		13,116	37	2.96	2.60	1.14	0.29	7.7	6.8	1.34	.283	4.21	9.46
19	Charlie Hough C. Hough	182	183	.499	573	439	3.86	1,993	107	13	9	3278.2	2,900	1,405	1,602	341	1,383	140	64	31	13,944	152	5.47	3.80	1.44	0.94	14.3	9.9	1.31	.254	4.40	7.96
20	Tom Glavine T. Glavine	181	121	.599	420	420	3.55	1,576	23	12	0	2692.1	2,649	1,061	1,149	243	921	40	0	91	11,352	22	5.27	3.08	1.71	0.81	13.9	8.1	1.33	.281	3.84	8.86
21	Eppa Rixey E. Rixey	177	146	.548	436	353	3.32	652	178	23	8	2858.1	3,084	1,054	1,288	73	596	45	67		12,002	39	2.05	1.88	1.09	0.23	5.4	5.0	1.29	.283	4.06	9.71
22	Eddie Plank E. Plank	173	99	.636	357	276	1.15	1,168	192	40	23	2338.0	2,013		757	18	585	67	67			44	4.50	2.25	2.00	0.07		6.5	1.11	.276	2.91	7.75
23	Dolf Luque D. Luque	171	165	.509	479	332	3.29	1,008	182	23	25	2873.1	2,930		1,280	105	805	20	102		12,055	42	3.16	2.52	1.25	0.33	8.4	6.7	1.30	.279	4.01	9.18
24	Carl Hubbell C. Hubbell	167	98	.630	344	277	2.95	1,053	164	24	22	2302.1	2,229	755	866	155	455	23	53		9,476	35	4.12	1.78	2.31	0.61	11.1	4.8	1.17	.266	3.39	8.71
25	Kenny Rogers K. Rogers	166	112	.597	417	405	4.34	1,428	25	7	0	2567.1	2,724	1,239	1,358	268	881	109	5	21	11,091	52	5.01	3.09	1.62	0.94	12.9	7.9	1.40	.292	4.76	9.55