most wins in a season by a pirates pitcher

Ed Morris has won the most games for the Pittsburgh Alleghenys in a season, with 41 wins in 1886.

	NAME	W	SEASON	TM	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	Ed Morris E. Morris	41	1886	PIT	20	.672	64	63	2.45	326	63	12	1	555.1	455	151	244	5	118	7	1	2,252	22	5.28	1.91	2.76	0.08	14.5	5.2	1.03	.251	3.95	76	2.72	85	7.37	23.7
2	Ed Morris E. Morris	39	1885	PIT	24	.619	63	63	2.35	298	63	7	0	581.0	459	152	245	5	101	14	0	2,321	36	4.62	1.56	2.95	0.08	12.8	4.4	0.96	.239	3.80	77	2.56	90	7.11	10.9
3	Frank Killen F. Killen	36	1893	PIT	14	.720	55	48	3.64	99	38	2	0	415.0	401	168	235	12	140	15	6	1,784	10	2.15	3.04	0.71	0.26	5.5	7.8	1.30	.256	5.10	80	4.26	93	8.70	12.4
4	Pink Hawley P. Hawley	31	1895	PIT	22	.585	56	50	3.18	142	44	4	1	444.1	449	157	242	7	122	33	5	1,892	10	2.88	2.47	1.16	0.14	7.5	6.4	1.29	.278	4.90	68	4.19	90	9.09	22.3
5	Frank Killen F. Killen	30	1896	PIT	18	.625	52	50	3.41	134	44	5	0	432.1	476	164	244	7	119	14	1	1,850	9	2.79	2.48	1.13	0.15	7.2	6.4	1.38	.298	5.08	82	3.81	91	9.91	15.2
6	Ed Morris E. Morris	29	1888	PIT	23	.558	55	55	2.31	135	54	5	0	480.0	470	123	216	7	74	8	0	2,002	13	2.53	1.39	1.82	0.13	6.7	3.7	1.13	.260	4.05	90	2.72	101	8.81	-12.7
7	Pud Galvin P. Galvin	29	1886	PIT	21	.580	50	50	2.67	72	49	2	0	434.2	457	129	229	3	75	7	0	1,820	12	1.49	1.55	0.96	0.06	4.0	4.1	1.22	.273	4.74	83	3.43	106	9.46	-17.7
8	Jack Chesbro J. Chesbro	28	1902	PIT	6	.824	35	33	2.17	136	31	8	1	286.1	242	69	81	1	62	21	2	1,139	3	4.27	1.95	2.19	0.03	11.9	5.4	1.06	.262	2.55	78	2.63	90	7.61	9
9	Pud Galvin P. Galvin	28	1887	PIT	21	.571	49	48	3.29	76	47	3	0	440.2	490	161	259	12	67	11	2	1,897	7	1.55	1.37	1.13	0.25	4.0	3.5	1.26	.276	5.29	86	3.82	96	10.01	0.8
10	Mark Baldwin M. Baldwin	26	1892	PIT	27	.491	56	53	3.47	157	45	0	0	440.1	447	170	272	11	194	22	3	1,983	17	3.21	3.97	0.81	0.22	7.9	9.8	1.46	.273	5.56	108	3.52	109	9.14	-16.9
11	Burleigh Grimes B. Grimes	25	1928	PIT	14	.641	48	37	2.99	97	28	4	3	330.2	311	110	146	11	77	9	9	1,377	3	2.64	2.10	1.26	0.30	7.0	5.6	1.17	.254	3.97	73	3.53	83	8.46	26
12	Johnny Morrison J. Morrison	25	1923	PIT	13	.658	42	37	3.49	114	27	2	2	301.2	287	117	136	6	110	5	4	1,270	9	3.40	3.28	1.04	0.18	9.0	8.7	1.32	.271	4.06	87	3.58	90	8.56	13
13	Howie Camnitz H. Camnitz	25	1909	PIT	6	.806	41	30	1.62	133	20	6	3	283.0	207	51	75	1	68	7	11	1,057	2	4.23	2.16	1.96	0.03	12.6	6.4	0.97	.243	2.39	63	2.12	81	6.58	15.9
14	Sam Leever S. Leever	25	1903	PIT	7	.781	36	34	2.06	90	30	7	1	284.1	255	65	98	2	60	5	2	1,135	6	2.85	1.90	1.50	0.06	7.9	5.3	1.11	.259	3.10	63	2.90	88	8.07	12.2
15	Deacon Phillippe D. Phillippe	25	1903	PIT	9	.735	36	33	2.43	123	31	4	2	289.1	269	78	116	4	29	4	3	1,150	5	3.83	0.90	4.24	0.12	10.7	2.5	1.03	.268	3.61	74	2.42	74	8.37	27.6
16	Jesse Tannehill J. Tannehill	25	1898	PIT	13	.658	43	38	2.95	93	34	5	2	326.2	338	107	147	2	63	12	4	1,350	6	2.56	1.74	1.48	0.06	6.9	4.7	1.23	.285	4.05	84	2.97	85	9.31	18
17	Wilbur Cooper W. Cooper	24	1920	PIT	15	.615	44	37	2.39	114	28	3	2	327.0	307	87	113	4	52	11	6	1,312	1	3.14	1.43	2.19	0.11	8.7	4.0	1.10	.268	3.11	76	2.79	84	8.45	19.2
18	Claude Hendrix C. Hendrix	24	1912	PIT	9	.727	39	32	2.59	176	25	4	1	288.2	256	83	110	6	105	9	6	1,183	7	5.49	3.27	1.68	0.19	14.9	8.9	1.25	.282	3.43	78	3.09	90	7.98	10.5
19	Jesse Tannehill J. Tannehill	24	1899	PIT	14	.632	41	36	2.82	65	33	3	1	322.0	361	101	139	4	52	14	5	1,343	0	1.82	1.45	1.25	0.11	4.8	3.9	1.28	.296	3.89	75	3.31	88	10.09	15.6
20	Wilbur Cooper W. Cooper	23	1922	PIT	14	.622	41	36	3.18	129	27	4	0	294.2	330	104	130	13	61	7	3	1,251	4	3.94	1.86	2.11	0.40	10.3	4.9	1.33	.305	3.97	78	3.40	84	10.08	20.8
21	Nick Maddox N. Maddox	23	1908	PIT	8	.742	36	32	2.28	70	22	4	1	260.2	209	66	89	5	90	11	4	1,040	4	2.42	3.11	0.78	0.17	6.7	8.7	1.15	.236	3.07	97	2.98	119	7.22	-14
22	Vic Willis V. Willis	23	1908	PIT	11	.676	41	38	2.07	97	25	7	0	304.2	239	70	95	2	69	6	3	1,197	4	2.87	2.04	1.41	0.06	8.1	5.8	1.01	.232	2.81	88	2.29	92	7.06	7
23	Vic Willis V. Willis	23	1906	PIT	13	.639	41	36	1.73	124	32	6	1	322.0	295	62	84	0	76	5	5	1,262	8	3.47	2.12	1.63	0.00	9.8	6.0	1.15	.279	2.35	66	2.35	86	8.25	13.7
24	Pud Galvin P. Galvin	23	1889	PIT	16	.590	41	40	4.17	77	38	4	0	341.0	392	158	230	19	78	10	1	1,487	13	2.03	2.06	0.99	0.50	5.2	5.2	1.38	.286	6.07	114	4.05	110	10.35	-24
25	Pud Galvin P. Galvin	23	1888	PIT	25	.479	50	50	2.63	107	49	6	0	437.1	446	128	190	9	53	8	0	1,809	11	2.20	1.09	2.02	0.19	5.9	2.9	1.14	.268	3.91	102	2.78	103	9.18	-14.6