Bucky Walters had the lowest WHIP in 1940, with a WHIP of 1.09.

Interpreted as:

lowest whip with a minimum of 1 IP per team game by a player in 1940

	NAME	WHIP	SEASON	TM	G	W	L	W%	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%	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Bucky Walters B. Walters	1.09	1940	CIN	36	22	10	.688	36	2.48	115	29	3	0	305.0	241	84	95	19	92	5	0	1,207	3	3.39	2.71	1.25	0.56	9.5	7.6	.227	2.80	66	3.85	100	7.11	0
2	Paul Derringer P. Derringer	1.11	1940	CIN	37	20	12	.625	37	3.06	115	26	3	0	296.2	280	101	110	17	48	0	0	1,205	1	3.49	1.46	2.40	0.52	9.5	4.0	.257	3.34	81	3.29	85	8.49	18.6
3	Claude Passeau C. Passeau	1.13	1940	CHC	46	20	13	.606	31	2.50	124	20	4	5	280.2	259	78	97	8	59	4	13	1,172	0	3.98	1.89	2.10	0.26	10.6	5.0	.257	3.11	66	3.00	77	8.31	28.2
4	Bob Feller B. Feller	1.13	1940	CLE	43	27	11	.711	37	2.61	261	31	4	4	320.1	245	93	102	13	118	5	5	1,304	8	7.33	3.32	2.21	0.37	20.0	9.0	.256	2.87	65	2.89	73	6.88	39.3
5	Jim Turner J. Turner	1.17	1940	CIN	24	14	7	.667	23	2.89	53	11	0	0	187.0	187	60	70	9	32	0	1	749	1	2.55	1.54	1.66	0.43	7.1	4.3	.272	3.37	77	3.41	88	9.00	9.3
6	Johnny Rigney J. Rigney	1.18	1940	CWS	39	14	18	.438	33	3.11	141	19	2	3	280.2	240	97	117	22	90	2	6	1,152	5	4.52	2.89	1.57	0.71	12.2	7.8	.243	3.75	72	3.83	90	7.70	12.9
7	Luke Hamlin L. Hamlin	1.19	1940	BKN	33	9	8	.529	25	3.06	91	9	2	0	182.1	183	62	77	17	34	2	2	758	0	4.49	1.68	2.68	0.84	12.0	4.5	.270	3.80	79	3.64	92	9.03	6.8
8	Manny Salvo M. Salvo	1.21	1940	BSN	21	10	9	.526	20	3.08	60	14	5	0	160.2	151	55	63	9	43	2	1	662	2	3.36	2.41	1.40	0.50	9.1	6.5	.259	3.53	85	3.66	99	8.46	0.1
9	Ted Lyons T. Lyons	1.21	1940	CWS	22	12	8	.600	22	3.24	72	17	4	0	186.1	188	67	85	17	37	0	0	789	6	3.48	1.79	1.95	0.82	9.1	4.7	.258	4.11	75	3.85	90	9.08	8.3
10	Clyde Shoun C. Shoun	1.21	1940	SLN	54	13	11	.542	19	3.92	82	13	1	6	197.1	193	86	96	13	46	2	22	816	4	3.74	2.10	1.78	0.59	10.0	5.6	.267	4.38	97	3.59	87	8.80	11.9
11	Lon Warneke L. Warneke	1.22	1940	SLN	33	16	10	.615	31	3.14	85	17	1	0	232.0	235	81	103	17	47	3	2	969	3	3.30	1.82	1.81	0.66	8.8	4.9	.267	4.00	78	3.70	90	9.12	11.3
12	Thornton Lee T. Lee	1.22	1940	CWS	28	12	13	.480	27	3.47	87	24	1	0	228.0	223	88	100	13	56	2	0	948	4	3.43	2.21	1.55	0.51	9.2	5.9	.266	3.95	80	3.58	84	8.80	17.1
13	Whit Wyatt W. Wyatt	1.23	1940	BKN	37	15	14	.517	34	3.46	124	16	5	0	239.1	233	92	105	19	62	5	3	1,000	0	4.66	2.33	2.00	0.71	12.4	6.2	.271	3.95	89	3.67	92	8.76	8.1
14	Larry French L. French	1.24	1940	CHC	40	14	14	.500	33	3.29	107	18	3	2	246.0	240	90	93	12	64	4	6	1,024	0	3.91	2.34	1.67	0.44	10.4	6.3	.272	3.40	86	3.43	88	8.78	12.7
15	Rip Sewell R. Sewell	1.24	1940	PIT	33	16	5	.762	23	2.80	60	14	2	1	189.2	169	59	71	6	67	3	3	790	2	2.85	3.18	0.90	0.28	7.6	8.5	.249	3.37	73	3.72	95	8.02	4.5
16	Bill Lohrman B. Lohrman	1.25	1940	NYG	31	10	15	.400	27	3.78	73	11	4	1	195.0	200	82	98	19	43	3	2	810	3	3.37	1.98	1.70	0.88	9.0	5.3	.269	4.52	97	4.06	102	9.23	-1.7
17	Marius Russo M. Russo	1.25	1940	NYY	30	14	8	.636	24	3.28	87	15	0	1	189.1	181	69	79	17	55	1	2	786	1	4.14	2.61	1.58	0.81	11.1	7.0	.262	3.76	78	3.97	96	8.60	2.7
18	Schoolboy Rowe S. Rowe	1.26	1940	DET	27	16	3	.842	23	3.46	61	11	1	0	169.0	170	65	68	15	43	1	4	706	2	3.25	2.29	1.42	0.80	8.6	6.1	.265	3.62	74	4.05	89	9.05	9.5
19	Bobo Newsom B. Newsom	1.27	1940	DET	36	21	5	.808	34	2.83	164	20	3	0	264.0	235	83	110	19	100	3	1	1,101	2	5.59	3.41	1.64	0.65	14.9	9.1	.265	3.75	61	3.70	81	8.01	24.5
20	Kirby Higbe K. Higbe	1.28	1940	PHN	41	14	19	.424	36	3.72	137	20	1	1	283.0	242	117	126	12	121	3	4	1,194	9	4.36	3.85	1.13	0.38	11.5	10.1	.250	4.01	97	3.73	95	7.70	6.3
21	Curt Davis C. Davis	1.29	1940	TOT	36	8	11	.421	25	4.19	58	9	0	3	191.0	208	89	96	17	38	2	8	797	1	2.73	1.79	1.53	0.80	7.3	4.8	.280	4.52	106	4.02	100	9.80	0.5
22	Junior Thompson J. Thompson	1.30	1940	CIN	33	16	9	.640	31	3.32	103	17	3	0	225.1	197	83	90	10	96	2	1	951	3	4.11	3.83	1.07	0.40	10.8	10.1	.253	3.59	88	3.80	99	7.87	1.1
23	Red Ruffing R. Ruffing	1.30	1940	NYY	30	15	12	.556	30	3.38	97	20	3	0	226.0	218	85	98	24	76	3	0	954	1	3.86	3.03	1.28	0.96	10.2	8.0	.257	3.90	80	4.41	107	8.68	-8.1
24	Carl Hubbell C. Hubbell	1.30	1940	NYG	31	11	12	.478	28	3.65	86	11	2	0	214.1	220	87	102	22	59	2	3	916	3	3.61	2.48	1.46	0.92	9.4	6.4	.265	4.28	94	4.22	106	9.24	-5.7
25	Tommy Bridges T. Bridges	1.31	1940	DET	29	12	9	.571	28	3.37	133	12	2	0	197.2	171	74	89	11	88	0	1	843	5	6.06	4.01	1.51	0.50	15.8	10.4	.262	4.05	73	3.55	78	7.79	21.5