highest wins-losses in a season by a pitcher

Old Hoss Radbourn has the most pitcher wins - pitcher losses in a season, with 47 in 1884.

	NAME	W-L	W	L	SEASON	TM	W%	L%	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	Old Hoss Radbourn O. Hoss Radbourn	47	59	12	1884	PRO	.831	.169	75	73	1.38	441	73	11	2	678.2	528	104	216	18	98		2		2,672	34	5.85	1.30	4.50	0.24	16.5	3.7	0.92		2.86	48	2.75	84	7.00	31.9
2	John Clarkson J. Clarkson	37	53	16	1885	CWS	.768	.232	70	70	1.85	308	68	10	0	623.0	497	128	255	21	97		0		2,487	14	4.45	1.40	3.18	0.30	12.4	3.9	0.95		3.68	61	2.80	86	7.18	38.8
3	Al Spalding A. Spalding	35	47	12	1876	CWS	.797	.203	61	60	1.75	39	53	8	0	528.2	542	103	226	6	26		2		2,219	1	0.66	0.44	1.50	0.10	1.8	1.2	1.07		3.85	73	2.38	99	9.23	9
4	Mickey Welch M. Welch	33	44	11	1885	NYG	.800	.200	56	55	1.66	258	55	7	1	492.0	372	91	170	4	131		1		1,963	39	4.72	2.40	1.97	0.07	13.1	6.7	1.02		3.11	60	2.74	91	6.80	13
5	Charlie Buffinton C. Buffinton	32	48	16	1884	BSN	.750	.250	67	67	2.15	417	63	8	0	587.0	506	140	225	15	76		0		2,383	24	6.39	1.17	5.49	0.23	17.5	3.2	0.99		3.45	74	2.57	77	7.76	46.8
6	Guy Hecker G. Hecker	32	52	20	1884	LOU	.722	.278	75	73	1.80	385	72	6	0	670.2	526	134	230	4	56	16	2		2,649	27	5.17	0.75	6.88	0.05	14.5	2.1	0.87	.239	3.09	57	2.53	80	7.06	43
7	John Clarkson J. Clarkson	30	49	19	1889	BSN	.721	.279	73	72	2.73	284	68	8	1	620.0	589	188	280	16	203	17	1		2,641	16	4.12	2.95	1.40	0.23	10.8	7.7	1.28	.270	4.06	65	3.49	82	8.55	56.6
8	Walter Johnson W. Johnson	29	36	7	1913	WSH	.837	.163	48	36	1.14	243	29	11	2	346.0	232	44	56	9	38	9	10		1,271	2	6.32	0.99	6.39	0.23	19.1	3.0	0.78	.229	1.46	39	1.90	63	6.03	42.3
9	Joe Wood J. Wood	29	34	5	1912	BSA	.872	.128	43	38	1.91	258	35	10	1	344.0	267	73	104	2	82	12	5		1,328	7	6.75	2.15	3.15	0.05	19.4	6.2	1.01	.272	2.72	58	2.25	71	6.99	35.1
10	Jack Chesbro J. Chesbro	29	41	12	1904	NYH	.774	.226	55	51	1.82	239	48	6	0	454.2	338	92	128	4	88	7	3		1,720	9	4.73	1.74	2.72	0.08	13.9	5.1	0.94	.242	2.53	65	2.11	78	6.69	32.5
11	Bob Caruthers B. Caruthers	29	40	11	1889	BKN	.784	.216	56	50	3.13	118	46	7	1	445.0	444	155	215	16	104	13	6		1,880	22	2.39	2.10	1.13	0.32	6.3	5.5	1.23	.263	4.35	85	3.73	101	8.98	-7.3
12	Lady Baldwin L. Baldwin	29	42	13	1886	DET	.764	.236	56	56	2.24	323	55	7	0	487.0	371	121	194	11	100		0		1,936	22	5.97	1.85	3.23	0.20	16.7	5.2	0.97		3.59	68	2.68	81	6.86	33.8
13	Larry Corcoran L. Corcoran	29	43	14	1880	CWS	.754	.246	63	60	1.95	268	57	4	2	536.1	404	116	218	6	99		3		2,133	19	4.50	1.66	2.71	0.10	12.6	4.6	0.94		3.66	80	2.23	91	6.78	16.5
14	Will White W. White	28	40	12	1882	CIN	.769	.231	54	54	1.54	122	52	8	0	480.0	411	82	164	3	71		0		1,975	19	2.29	1.33	1.72	0.06	6.2	3.6	1.00		3.08	57	2.78	99	7.71	1.7
15	John Ward J. Ward	28	47	19	1879	PRO	.712	.288	70	60	2.15	239	58	2	1	587.0	571	140	270	5	36		10		2,425	29	3.66	0.55	6.64	0.08	9.9	1.5	1.03		4.14	89	2.22	92	8.75	7.9
16	Lefty Grove L. Grove	27	31	4	1931	PHA	.886	.114	41	30	2.06	175	27	4	5	288.2	249	66	84	10	62	1	10		1,160	2	5.46	1.93	2.82	0.31	15.1	5.3	1.08	.262	2.62	47	3.01	70	7.76	40.8
17	Joe McGinnity J. McGinnity	27	35	8	1904	NYG	.814	.186	51	44	1.61	144	38	9	5	408.0	307	73	103	8	86	13	7		1,588	2	3.18	1.90	1.67	0.18	9.1	5.4	0.96	.224	2.27	59	2.70	96	6.77	5.3
18	Matt Kilroy M. Kilroy	27	46	19	1887	BAL	.708	.292	69	69	3.07	217	66	6	0	589.1	585	201	326	9	157	20	1		2,492	46	3.31	2.40	1.38	0.14	8.7	6.3	1.26	.276	4.98	73	3.64	90	8.93	23.3
19	Bob Caruthers B. Caruthers	27	40	13	1885	SLA	.755	.245	53	53	2.07	190	53	6	0	482.1	430	111	196	3	57	19	0		1,948	25	3.55	1.06	3.33	0.06	9.8	2.9	1.01	.254	3.66	62	2.65	85	8.02	28.7
20	Billy Taylor B. Taylor	27	43	16	1884	TOT	.729	.271	63	59	2.10	284	59	3	4	523.0	454	122	215	5	84	12	4		2,195	32	4.89	1.45	3.38	0.09	12.9	3.8	1.03	.248	3.70	66	2.86	98	7.81	5.1
21	Christy Mathewson C. Mathewson	26	37	11	1908	NYG	.771	.229	56	44	1.43	259	34	11	5	390.2	281	62	85	5	42	3	9		1,469	2	5.97	0.97	6.17	0.12	17.6	2.9	0.83	.238	1.96	61	1.29	52	6.47	52.4
22	Charlie Sweeney C. Sweeney	26	41	15	1884	TOT	.732	.268	60	56	1.70	337	53	6	1	492.0	360	93	182	6	42		4		1,909	21	6.16	0.77	8.02	0.11	17.7	2.2	0.82		3.33	58	2.32	81	6.59	26.9
23	George Bradley G. Bradley	26	45	19	1876	STL	.703	.297	64	64	1.23	103	63	16	0	573.0	470	78	229	3	38		0		2,269	34	1.62	0.60	2.71	0.05	4.5	1.7	0.89		3.60	58	2.14	101	7.38	-20.7
24	Denny McLain D. McLain	25	31	6	1968	DET	.838	.162	41	41	1.96	280	28	6	0	336.0	241	73	86	31	63	6	0	2	1,288	3	7.50	1.69	4.44	0.83	21.7	4.9	0.90	.231	2.30	64	2.53	79	6.46	24.8
25	Ed Walsh E. Walsh	25	40	15	1908	CWS	.727	.273	66	49	1.42	269	42	11	6	464.0	343	73	111	2	56	9	16		1,755	10	5.22	1.09	4.80	0.04	15.3	3.2	0.86	.240	2.15	63	1.42	67	6.65	34.2