Bucky Walters won the most games in 1939, with 27 wins.

	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	Bucky Walters B. Walters	27	1939	CIN	11	.711	39	36	2.29	137	31	2	0	319.0	250	81	98	15	109	6	2	1,283	8	3.87	3.08	1.26	0.42	10.7	8.5	1.13	.231	2.76	60	3.81	96	7.05	4.8
2	Paul Derringer P. Derringer	25	1939	CIN	7	.781	38	35	2.93	128	28	5	0	301.0	321	98	115	15	35	3	1	1,245	2	3.83	1.05	3.66	0.45	10.3	2.8	1.18	.288	3.44	77	3.15	80	9.60	27.2
3	Bob Feller B. Feller	24	1939	CLE	9	.727	39	35	2.85	246	24	4	1	296.2	227	94	105	13	142	3	3	1,243	14	7.46	4.31	1.73	0.39	19.8	11.4	1.24	.255	3.19	64	3.35	78	6.89	32.4
4	Curt Davis C. Davis	22	1939	SLN	16	.579	49	31	3.63	70	13	3	7	248.0	279	100	121	18	48	3	14	1,059	2	2.54	1.74	1.46	0.65	6.6	4.5	1.32	.284	4.39	88	3.97	93	10.13	9.1
5	Red Ruffing R. Ruffing	21	1939	NYY	7	.750	28	28	2.93	95	22	5	0	233.1	211	76	88	15	75	2	0	968	3	3.66	2.89	1.27	0.58	9.8	7.7	1.23	.251	3.39	66	3.98	93	8.14	7.2
6	Luke Hamlin L. Hamlin	20	1939	BKN	13	.606	40	36	3.64	88	19	2	0	269.2	255	109	115	27	54	0	2	1,100	2	2.94	1.80	1.63	0.90	8.0	4.9	1.15	.245	3.84	90	4.22	101	8.51	-0.1
7	Dutch Leonard D. Leonard	20	1939	WSH	8	.714	34	34	3.54	88	21	2	0	269.1	273	106	124	16	59	5	0	1,133	6	2.94	1.97	1.49	0.53	7.8	5.2	1.23	.266	4.14	81	3.80	90	9.12	12.5
8	Bobo Newsom B. Newsom	20	1939	TOT	11	.645	41	37	3.58	192	24	3	2	291.2	272	116	126	19	126	3	4	1,261	4	5.92	3.89	1.52	0.59	15.2	10.0	1.36	.275	3.89	73	3.83	81	8.39	28
9	Bill Lee B. Lee	19	1939	CHC	15	.559	37	36	3.44	105	20	1	0	282.1	295	108	125	18	85	1	1	1,202	4	3.35	2.71	1.24	0.57	8.7	7.1	1.35	.279	3.98	88	3.97	97	9.40	3.4
10	Harry Gumbert H. Gumbert	18	1939	NYG	11	.621	36	34	4.32	81	14	2	0	243.2	257	117	132	21	81	1	1	1,047	5	2.99	2.99	1.00	0.78	7.7	7.7	1.39	.273	4.88	109	4.44	108	9.49	-8.4
11	Tommy Bridges T. Bridges	17	1939	DET	7	.708	29	26	3.50	129	16	2	2	198.0	186	77	87	11	61	6	2	840	4	5.86	2.77	2.11	0.50	15.4	7.3	1.25	.276	3.95	71	3.41	72	8.45	28.1
12	Hugh Casey H. Casey	15	1939	BKN	10	.600	40	25	2.93	79	15	0	1	227.1	228	74	88	13	54	11	11	962	4	3.13	2.14	1.46	0.51	8.2	5.6	1.24	.267	3.48	73	3.88	92	9.03	8.4
13	Larry French L. French	15	1939	CHC	8	.652	36	21	3.29	98	10	2	1	194.0	205	71	80	7	50	1	11	828	5	4.55	2.32	1.96	0.32	11.8	6.0	1.31	.295	3.71	84	3.22	79	9.51	18.5
14	Lefty Grove L. Grove	15	1939	BSA	4	.789	23	23	2.54	81	17	2	0	191.0	180	54	63	8	58	1	0	798	0	3.82	2.73	1.40	0.38	10.2	7.3	1.25	.265	2.97	53	3.60	78	8.48	20.9
15	Mel Harder M. Harder	15	1939	CLE	9	.625	29	26	3.50	67	12	1	1	208.0	213	81	89	15	64	3	3	877	1	2.90	2.77	1.05	0.65	7.6	7.3	1.33	.272	3.85	78	4.23	98	9.22	1.7
16	Thornton Lee T. Lee	15	1939	CWS	11	.577	33	29	4.21	81	15	2	3	235.0	260	110	121	15	70	3	4	1,008	2	3.10	2.68	1.16	0.57	8.0	6.9	1.40	.292	4.63	92	4.04	92	9.96	9.5
17	Claude Passeau C. Passeau	15	1939	TOT	13	.536	42	35	3.28	137	17	2	3	274.1	269	100	112	9	73	5	6	1,150	0	4.49	2.39	1.88	0.30	11.9	6.3	1.25	.281	3.67	84	3.25	80	8.83	25.2
18	Bill Posedel B. Posedel	15	1939	BSN	13	.536	33	29	3.92	73	18	5	0	220.2	221	96	103	8	78	0	3	927	1	2.98	3.18	0.94	0.33	7.9	8.4	1.35	.277	4.20	108	3.84	101	9.01	-2.5
19	Johnny Rigney J. Rigney	15	1939	CWS	8	.652	35	29	3.70	119	11	2	0	218.2	208	90	103	10	84	2	4	946	3	4.90	3.46	1.42	0.41	12.6	8.9	1.34	.271	4.24	81	3.66	83	8.56	18.3
20	Bob Klinger B. Klinger	14	1939	PIT	17	.452	37	33	4.36	64	10	2	0	225.0	251	109	120	11	81	3	3	989	6	2.56	3.24	0.79	0.44	6.5	8.2	1.48	.289	4.80	111	4.16	102	10.04	-2
21	Ted Lyons T. Lyons	14	1939	CWS	6	.700	21	21	2.76	65	16	0	0	172.2	162	53	71	7	26	1	0	702	0	3.39	1.36	2.50	0.36	9.3	3.7	1.09	.257	3.70	60	3.22	73	8.44	23
22	Al Milnar A. Milnar	14	1939	CLE	12	.538	37	26	3.79	76	12	2	3	209.0	212	88	96	11	99	0	10	920	4	3.27	4.26	0.77	0.47	8.3	10.8	1.49	.274	4.13	85	4.35	101	9.13	-1.1
23	Bob Bowman B. Bowman	13	1939	SLN	5	.722	51	15	2.60	78	4	2	8	169.1	141	49	54	8	60	1	19	692	3	4.15	3.19	1.30	0.43	11.3	8.7	1.19	.244	2.87	63	3.75	87	7.49	10.2
24	Atley Donald A. Donald	13	1939	NYY	3	.813	24	20	3.71	55	11	2	1	153.0	144	63	74	12	60	0	2	657	1	3.24	3.53	0.92	0.71	8.4	9.1	1.33	.249	4.35	84	4.45	104	8.47	-3.5
25	Whitey Moore W. Moore	13	1939	CIN	12	.520	42	24	3.45	81	9	2	3	187.2	177	72	88	10	95	6	11	819	3	3.88	4.56	0.85	0.48	9.9	11.6	1.45	.266	4.22	91	4.42	112	8.49	-10.3