best whip as a pitcher in a month with a minimum of 40 innings pitched in the 1950's

Between the 1950 and 1959 seasons, Billy Pierce had the lowest WHIP when pitching at least 40 innings in a month, with a WHIP of 0.65 in June 1958.

	NAME	WHIP	IP	MONTH	G	W	L	W%	GS	ERA	SO	CG	SHO	SV	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	BABIP	RA	H/9
1	Billy Pierce B. Pierce	0.65	53.2	June 1958	7	4	1	.800	6	1.84	29	5	3	1	22	11	11	7	13	1	1	0	194	0	4.86	2.18	2.23	1.17	14.9	6.7	.104	1.84	3.69
2	Dick Donovan D. Donovan	0.73	53.2	August 1956	7	5	0	1.000	6	1.34	20	5	2	0	31	8	8	3	8	1	0	0	199	0	3.35	1.34	2.50	0.50	10.1	4.0	.168	1.34	5.20
3	Allie Reynolds A. Reynolds	0.73	45.0	May 1952	5	4	1	.800	5	1.00	28	5	1	0	21	5	6	1	12	0	0		166	0	5.60	2.40	2.33	0.20	16.9	7.2	.160	1.20	4.20
4	Ken Raffensberger K. Raffensberger	0.73	49.0	September 1951	7	4	0	1.000	6	1.65	15	3	2	1	30	9	9	1	6	0	1		182	0	2.76	1.10	2.50	0.18	8.2	3.3	.181	1.65	5.51
5	Warren Hacker W. Hacker	0.74	45.2	May 1955	6	4	1	.800	5	1.77	13	5	0	1	28	9	9	5	6	1	1	0	173	1	2.56	1.18	2.17	0.99	7.5	3.5	.155	1.77	5.52
6	Johnny Antonelli J. Antonelli	0.74	49.2	July 1959	7	3	2	.600	6	1.99	27	5	2	1	30	11	12	5	7	1	1	0	187	0	4.89	1.27	3.86	0.91	14.4	3.7	.170	2.17	5.44
7	Jim Wilson J. Wilson	0.77	44.0	June 1954	5	5	0	1.000	5	1.23	21	4	3	0	26	6	6	4	8	1	0		162	0	4.30	1.64	2.63	0.82	13.0	4.9	.172	1.23	5.32
8	Bobby Shantz B. Shantz	0.77	53.0	June 1952	6	5	1	.833	6	1.70	33	6	1	0	34	10	12	2	7	1	0		197	0	5.60	1.19	4.71	0.34	16.8	3.6	.208	2.04	5.77
9	Bud Daley B. Daley	0.78	40.0	May 1959	7	3	1	.750	3	1.13	22	2	1	0	28	5	7	2	3	2	2	0	152	3	4.95	0.68	7.33	0.45	14.5	2.0	.211	1.58	6.30
10	Warren Hacker W. Hacker	0.78	40.0	September 1952	6	3	2	.600	5	2.25	13	3	1	1	27	10	10	3	4	0	1		147	0	2.93	0.90	3.25	0.68	8.8	2.7	.189	2.25	6.08
11	Ewell Blackwell E. Blackwell	0.79	53.1	September 1950	7	4	2	.667	6	1.01	40	6	1	1	21	6	9	1	21	3	1		204	1	6.75	3.54	1.90	0.17	19.6	10.3	.144	1.52	3.54
12	Warren Hacker W. Hacker	0.79	44.1	July 1952	6	5	1	.833	6	1.62	22	4	3	0	29	8	8	1	6	0	0		168	0	4.47	1.22	3.67	0.20	13.1	3.6	.201	1.62	5.89
13	Harvey Haddix H. Haddix	0.79	51.2	May 1959	6	3	3	.500	6	2.09	40	4	0	0	34	12	14	2	7	0	0	4	194	0	6.97	1.22	5.71	0.35	20.6	3.6	.221	2.44	5.92
14	Allie Reynolds A. Reynolds	0.80	45.0	June 1951	9	5	0	1.000	5	1.20	24	4	3	2	30	6	7	0	6	0	4		166	0	4.80	1.20	4.00	0.00	14.5	3.6	.221	1.40	6.00
15	Art Ditmar A. Ditmar	0.80	48.2	August 1959	7	3	2	.600	6	1.11	26	2	1	0	28	6	9	2	11	2	0	1	185	0	4.81	2.03	2.36	0.37	14.1	5.9	.181	1.66	5.18
16	Paul Foytack P. Foytack	0.80	61.0	September 1958	7	5	2	.714	7	1.77	40	6	0	0	28	12	12	2	21	0	0	1	229	0	5.90	3.10	1.90	0.30	17.5	9.2	.157	1.77	4.13
17	Sal Maglie S. Maglie	0.80	56.0	September 1956	7	6	1	.857	7	1.77	28	3	1	0	38	11	11	5	7	3	0	0	209	0	4.50	1.13	4.00	0.80	13.4	3.3	.199	1.77	6.11
18	Don Newcombe D. Newcombe	0.81	67.2	August 1956	9	7	1	.875	8	2.13	40	5	2	0	43	16	16	9	12	0	1	3	252	1	5.32	1.60	3.33	1.20	15.9	4.8	.178	2.13	5.72
19	Don Gross D. Gross	0.82	52.2	May 1957	8	4	1	.800	5	1.88	23	4	0	0	35	11	11	5	8	1	0	2	199	1	3.93	1.37	2.88	0.85	11.6	4.0	.185	1.88	5.98
20	Mike Garcia M. Garcia	0.82	52.1	June 1954	10	5	1	.833	6	1.20	30	4	3	1	27	7	10	0	16	1	3		199	0	5.16	2.75	1.88	0.00	15.1	8.0	.178	1.72	4.64
21	Don Newcombe D. Newcombe	0.82	51.0	July 1956	7	6	0	1.000	7	2.65	22	4	1	0	33	15	16	5	9	0	0	1	193	0	3.88	1.59	2.44	0.88	11.4	4.7	.178	2.82	5.82
22	Arnie Portocarrero A. Portocarrero	0.83	58.0	July 1958	7	5	1	.833	6	2.64	23	6	0	1	38	17	19	5	10	0	1	1	219	0	3.57	1.55	2.30	0.78	10.5	4.6	.182	2.95	5.90
23	Billy Pierce B. Pierce	0.83	62.2	August 1953	8	5	2	.714	6	0.86	46	6	4	1	38	6	8	3	14	1	2		237	0	6.61	2.01	3.29	0.43	19.4	5.9	.202	1.15	5.46
24	Bob Rush B. Rush	0.84	55.0	May 1952	6	6	0	1.000	6	0.65	30	6	3	0	29	4	5	1	17	0	0		206	1	4.91	2.78	1.76	0.16	14.6	8.3	.177	0.82	4.75
25	Lew Burdette L. Burdette	0.84	41.2	May 1954	5	4	1	.800	5	1.73	18	4	1	0	23	8	9	2	12	1	0		150	0	3.89	2.59	1.50	0.43	12.0	8.0	.179	1.94	4.97