what relief pitcher had the most wins in a season before 1939

Before 1939, Mace Brown won the most games by a relief pitcher in a season, with 15 wins in 1938.

	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	H/9
1	Mace Brown M. Brown	15	1938	PIT	8	.652	49	0	3.62	51	0	0	5	124.1	140	50	62	6	44	0	32	547	3	3.69	3.18	1.16	0.43	9.3	8.0	1.48	.300	4.49	10.13
2	Wilcy Moore W. Moore	13	1927	NYY	3	.813	38	0	1.96	48	0	0	13	119.2	89	26	33	1	42	0	30	479	2	3.61	3.16	1.14	0.08	10.0	8.8	1.09	.227	2.48	6.69
3	Johnny Murphy J. Murphy	12	1937	NYY	4	.750	35	0	3.61	33	0	0	10	89.2	96	36	39	5	39	1	30	396	2	3.31	3.91	0.85	0.50	8.3	9.8	1.51	.286	3.91	9.64
4	Jack Russell J. Russell	11	1933	WSH	4	.733	47	0	2.56	25	0	0	13	102.0	93	29	34	2	27	1	31	411	1	2.21	2.38	0.93	0.18	6.1	6.6	1.18	.256	3.00	8.21
5	Hooks Dauss H. Dauss	11	1926	DET	3	.786	30	0	3.60	23	0	0	9	95.0	94	38	39	4	37	0	23	402	0	2.18	3.51	0.62	0.38	5.7	9.2	1.38	.266	3.69	8.91
6	Elam Vangilder E. Vangilder	11	1925	SLA	2	.846	36	0	3.62	44	0	0	6	102.0	103	41	56	4	44	2	23	445	2	3.88	3.88	1.00	0.35	9.9	9.9	1.44	.282	4.94	9.09
7	Johnny Morrison J. Morrison	10	1929	BKN	2	.833	29	0	3.90	23	0	0	8	64.2	65	28	33	7	36	2	22	290	2	3.20	5.01	0.64	0.97	7.9	12.4	1.56	.261	4.59	9.05
8	Garland Braxton G. Braxton	10	1927	WSH	7	.588	56	0	2.47	88	0	0	10	146.0	120	40	49	4	33	1	31	586	3	5.42	2.03	2.67	0.25	15.0	5.6	1.05	.252	3.02	7.40
9	Ben Cantwell B. Cantwell	9	1932	BSN	8	.529	28	0	2.03	24	0	0	5	80.0	64	18	23	3	18	2	27	315	0	2.70	2.03	1.33	0.34	7.6	5.7	1.02	.228	2.59	7.20
10	Firpo Marberry F. Marberry	9	1926	WSH	5	.643	59	0	2.82	36	0	0	22	102.0	86	32	38	4	51	3	47	435	0	3.18	4.50	0.71	0.35	8.3	11.7	1.34	.240	3.35	7.59
11	Joe Pate J. Pate	9	1926	PHA	0	1.000	45	0	2.71	24	0	0	7	109.2	103	33	35	3	48	2	34	470	1	1.97	3.94	0.50	0.25	5.1	10.2	1.38	.254	2.87	8.45
12	Firpo Marberry F. Marberry	9	1925	WSH	5	.643	55	0	3.47	53	0	0	16	93.1	84	36	50	4	45	4	39	401	0	5.11	4.34	1.18	0.39	13.2	11.2	1.38	.271	4.82	8.10
13	Ken Holloway K. Holloway	9	1924	DET	1	.900	36	0	3.69	31	0	0	3	97.2	118	40	52	3	41	4	22	435	0	2.86	3.78	0.76	0.28	7.1	9.4	1.63	.323	4.79	10.87
14	Allen Russell A. Russell	9	1923	WSH	3	.750	47	0	2.62	53	0	0	9	144.1	133	42	61	6	61	2	29	610	2	3.30	3.80	0.87	0.37	8.7	10.0	1.34	.260	3.80	8.29
15	Tom Hughes T. Hughes	9	1916	BSN	2	.818	27	0	2.26	52	0	0	5	63.2	42	16	17	2	26	4	19	246	2	7.35	3.68	2.00	0.28	21.1	10.6	1.07	.247	2.40	5.94
16	Johnny Humphries J. Humphries	8	1938	CLE	3	.727	39	0	3.07	44	0	0	6	82.0	68	28	31	2	48	1	25	346	1	4.83	5.27	0.92	0.22	12.7	13.9	1.41	.263	3.40	7.46
17	Johnny Murphy J. Murphy	8	1938	NYY	1	.889	30	0	4.07	35	0	0	11	77.1	74	35	37	3	35	1	26	334	0	4.07	4.07	1.00	0.35	10.5	10.5	1.41	.273	4.31	8.61
18	Dick Coffman D. Coffman	8	1937	NYG	3	.727	41	0	2.95	30	0	0	3	76.1	88	25	34	4	29	4	21	344	1	3.54	3.42	1.03	0.47	8.7	8.4	1.53	.303	4.01	10.38
19	Charlie Root C. Root	8	1937	CHC	0	1.000	28	0	2.69	27	0	0	5	73.2	62	22	24	8	12	0	20	290	1	3.30	1.47	2.25	0.98	9.3	4.1	1.00	.222	2.93	7.57
20	Joe Heving J. Heving	8	1937	CLE	4	.667	40	0	4.83	35	0	0	5	72.2	92	39	53	6	30	2	20	337	2	4.33	3.72	1.17	0.74	10.4	8.9	1.68	.326	6.56	11.39
21	Dolf Luque D. Luque	8	1933	NYG	2	.800	35	0	2.69	23	0	0	4	80.1	75	24	27	4	19	0	22	328	0	2.58	2.13	1.21	0.45	7.0	5.8	1.17	.252	3.02	8.40
22	Bump Hadley B. Hadley	8	1931	WSH	5	.615	44	0	2.45	92	0	0	7	128.2	96	35	45	3	59	1	28	529	2	6.44	4.13	1.56	0.21	17.4	11.2	1.20	.249	3.15	6.72
23	Jack Quinn J. Quinn	8	1930	PHA	2	.800	29	0	2.90	23	0	0	6	62.0	66	20	23	2	14	0	17	256	1	3.34	2.03	1.64	0.29	9.0	5.5	1.29	.295	3.34	9.58
24	Hank Johnson H. Johnson	8	1930	NYY	4	.667	29	0	4.89	42	0	0	2	73.2	84	40	49	5	40	2	19	347	3	5.13	4.89	1.05	0.61	12.1	11.5	1.68	.306	5.99	10.26
25	Eddie Rommel E. Rommel	8	1928	PHA	1	.889	32	0	2.67	24	0	0	4	97.2	96	29	34	6	16	2	18	393	0	2.21	1.47	1.50	0.55	6.1	4.1	1.15	.261	3.13	8.85