Lefty Grove struck out the most batters in 1931, with 175 strikeouts.

	NAME	SO	SEASON	TM	G	W	L	W%	GS	ERA	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	Lefty Grove L. Grove	175	1931	PHA	41	31	4	.886	30	2.06	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
2	Bill Hallahan B. Hallahan	159	1931	SLN	37	19	9	.679	30	3.29	16	3	3	248.2	242	91	102	10	112	1	6	1,061	11	5.75	4.05	1.42	0.36	15.0	10.6	1.42	.298	3.69	84	3.72	92	8.76	9.1
3	Carl Hubbell C. Hubbell	155	1931	NYG	36	14	12	.538	30	2.65	21	4	3	248.0	211	73	88	14	67	4	5	1,010	3	5.63	2.43	2.31	0.51	15.3	6.6	1.12	.256	3.19	71	3.46	89	7.66	11.5
4	George Earnshaw G. Earnshaw	152	1931	PHA	43	21	7	.750	30	3.67	23	3	6	281.2	255	115	130	16	75	3	11	1,174	5	4.86	2.40	2.03	0.51	12.9	6.4	1.17	.258	4.15	83	3.60	84	8.15	21.3
5	Lefty Gomez L. Gomez	150	1931	NYY	40	21	9	.700	26	2.67	17	1	3	243.0	206	72	88	7	85	4	10	1,013	1	5.56	3.15	1.76	0.26	14.8	8.4	1.20	.259	3.26	64	3.35	83	7.63	18.2
6	Dazzy Vance D. Vance	150	1931	BKN	30	11	13	.458	29	3.38	12	2	0	218.2	221	82	99	12	53	0	1	918	1	6.17	2.18	2.83	0.49	16.3	5.8	1.25	.297	4.07	89	3.18	81	9.10	18
7	Paul Derringer P. Derringer	134	1931	SLN	35	18	8	.692	23	3.36	15	4	2	211.2	225	79	88	9	65	4	10	901	6	5.70	2.76	2.06	0.38	14.9	7.2	1.37	.313	3.74	86	3.38	84	9.57	15.7
8	Red Ruffing R. Ruffing	132	1931	NYY	37	16	14	.533	30	4.41	19	1	2	237.0	240	116	130	11	87	6	5	1,042	1	5.01	3.30	1.52	0.42	12.7	8.3	1.38	.284	4.94	106	3.78	94	9.11	5.8
9	Charlie Root C. Root	131	1931	CHC	39	17	14	.548	31	3.48	19	3	2	251.0	240	97	109	7	71	7	6	1,043	1	4.70	2.55	1.85	0.25	12.6	6.8	1.24	.282	3.91	90	3.36	84	8.61	17.9
10	Bump Hadley B. Hadley	124	1931	WSH	55	11	10	.524	11	3.06	2	1	7	179.2	145	61	81	4	92	1	28	768	4	6.21	4.61	1.35	0.20	16.1	12.0	1.32	.258	4.06	71	3.57	86	7.26	11.5
11	Wes Ferrell W. Ferrell	123	1931	CLE	40	22	12	.647	35	3.75	27	2	3	276.1	276	115	134	9	130	3	4	1,227	3	4.01	4.23	0.95	0.29	10.0	10.6	1.47	.278	4.36	81	4.09	92	8.99	11.7
12	Bill Walker B. Walker	121	1931	NYG	37	16	9	.640	28	2.26	19	6	5	239.1	212	60	78	6	64	3	7	991	2	4.55	2.41	1.89	0.23	12.2	6.5	1.15	.258	2.93	60	3.27	84	7.97	16.3
13	Ray Benge R. Benge	117	1931	PHN	38	14	18	.438	31	3.17	16	2	2	247.0	251	87	107	12	61	5	7	1,044	2	4.26	2.22	1.92	0.44	11.2	5.8	1.26	.282	3.90	73	3.60	80	9.15	23.9
14	Ed Brandt E. Brandt	112	1931	BSN	33	18	11	.621	29	2.92	23	3	2	250.0	228	81	94	11	77	4	4	1,035	3	4.03	2.77	1.45	0.40	10.8	7.4	1.22	.261	3.38	79	3.76	98	8.21	1.5
15	Pat Malone P. Malone	112	1931	CHC	36	16	9	.640	30	3.90	12	2	0	228.1	229	99	115	9	88	4	4	989	5	4.41	3.47	1.27	0.35	11.3	8.9	1.39	.284	4.53	101	3.85	96	9.03	3.8
16	Hank Johnson H. Johnson	106	1931	NYY	40	13	8	.619	23	4.72	8	0	4	196.1	176	103	114	13	102	1	11	864	5	4.86	4.68	1.04	0.60	12.3	11.8	1.42	.254	5.23	113	4.47	111	8.07	-11
17	Rube Walberg R. Walberg	106	1931	PHA	44	20	12	.625	35	3.74	19	1	4	291.0	298	121	133	16	109	0	8	1,248	3	3.28	3.37	0.97	0.49	8.5	8.7	1.40	.277	4.11	85	4.22	99	9.22	2.1
18	Tommy Bridges T. Bridges	105	1931	DET	35	8	16	.333	23	4.99	8	2	0	173.0	182	96	120	13	108	0	8	809	9	5.46	5.62	0.97	0.68	13.0	13.3	1.68	.290	6.24	111	4.75	109	9.47	-6.7
19	Jumbo Elliott J. Elliott	99	1931	PHN	52	19	14	.576	30	4.27	12	2	5	249.0	288	118	138	15	83	4	16	1,098	1	3.58	3.00	1.19	0.54	9.0	7.6	1.49	.304	4.99	99	4.15	93	10.41	10.5
20	Vic Sorrell V. Sorrell	99	1931	DET	35	13	14	.481	32	4.15	19	1	1	245.0	267	113	131	8	114	1	3	1,098	2	3.64	4.19	0.87	0.29	9.0	10.4	1.56	.296	4.81	92	4.14	95	9.81	6.7
21	Watty Clark W. Clark	96	1931	BKN	34	14	10	.583	28	3.20	16	3	1	233.1	243	83	86	4	52	1	2	981	3	3.70	2.01	1.85	0.15	9.8	5.3	1.26	.289	3.32	85	3.19	81	9.37	18.9
22	Carl Fischer C. Fischer	96	1931	WSH	46	13	9	.591	23	4.38	7	0	3	191.0	207	93	98	12	80	2	13	847	4	4.52	3.77	1.20	0.57	11.3	9.4	1.50	.297	4.62	102	4.21	101	9.75	-1.6
23	Si Johnson S. Johnson	95	1931	CIN	42	11	19	.367	33	3.77	14	0	0	262.1	273	110	131	5	74	6	3	1,113	2	3.26	2.54	1.28	0.17	8.5	6.6	1.32	.287	4.49	102	3.55	92	9.37	8
24	Lefty Stewart L. Stewart	89	1931	SLA	36	14	17	.452	33	4.40	20	1	0	258.0	287	126	155	17	85	3	2	1,135	1	3.10	2.97	1.05	0.59	7.8	7.5	1.44	.287	5.41	96	4.30	97	10.01	5.1
25	Sam Gray S. Gray	88	1931	SLA	43	11	24	.314	37	5.09	13	0	2	258.0	323	146	187	20	54	4	5	1,158	4	3.07	1.88	1.63	0.70	7.6	4.7	1.46	.305	6.52	111	4.11	92	11.27	10.3