lowest whip by a rookie pitcher since 1920

Since 1920, Dick Hughes has the lowest WHIP by a rookie, with a WHIP of 0.95 in 1967.

Interpreted as:

lowest whip with a minimum of 1 IP per team game by a rookie pitcher since 1920

	NAME	WHIP	SEASON	TM	G	W	L	W%	GS	ERA	SO	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Dick Hughes D. Hughes	0.95	1967	STL	37	16	6	.727	27	2.67	161	12	3	3	222.1	164	66	72	22	48	5	6	6	871	7	6.52	1.94	3.35	0.89	18.5	5.5	.224	2.91	80	3.09	96	6.64	3.2
2	Jose Fernandez J. Fernandez	0.98	2013	MIA	28	12	6	.667	28	2.19	187	0	0	0	172.2	111	42	47	10	58	5	0	5	681	3	9.75	3.02	3.22	0.52	27.5	8.5	.240	2.45	60	2.72	75	5.79	18.1
3	Shota Imanaga S. Imanaga	1.02	2024	CHC	29	15	3	.833	29	2.91	174	0	0	0	173.1	149	56	66	27	28	3	0	0	694	3	9.03	1.45	6.21	1.40	25.1	4.0	.264	3.43	73	3.71	93	7.74	5
4	Bob Moose B. Moose	1.04	1968	PIT	38	8	12	.400	22	2.74	126	3	3	3	170.2	136	52	61	5	41	3	7	7	685	3	6.64	2.16	3.07	0.26	18.4	6.0	.257	3.22	93	2.06	74	7.17	14
5	Wally Bunker W. Bunker	1.04	1964	BAL	29	19	5	.792	29	2.69	96	12	1	0	214.0	161	64	72	17	62	3	0	5	850	3	4.04	2.61	1.55	0.71	11.3	7.3	.214	3.03	77	3.65	100	6.77	-0.2
6	Fernando Valenzuela F. Valenzuela	1.05	1981	LAD	25	13	7	.650	25	2.48	180	11	8	0	192.1	140	53	55	11	61	1	0	4	758	4	8.42	2.85	2.95	0.51	23.7	8.0	.255	2.57	73	2.44	72	6.55	20.4
7	Hideo Nomo H. Nomo	1.06	1995	LAD	28	13	6	.684	28	2.54	236	4	3	0	191.1	124	54	63	14	78	5	0	2	780	19	11.10	3.67	3.03	0.66	30.3	10.0	.246	2.96	65	2.88	71	5.83	26.1
8	Stan Bahnsen S. Bahnsen	1.06	1968	NYY	37	17	12	.586	34	2.05	162	10	1	0	267.1	216	61	72	14	68	2	3	6	1,070	4	5.45	2.29	2.38	0.47	15.1	6.4	.245	2.42	73	2.64	88	7.27	10.1
9	Ted Wilks T. Wilks	1.07	1944	SLN	36	17	4	.810	21	2.64	70	16	4	0	207.2	173	61	61	12	49	1	10		820	1	3.03	2.12	1.43	0.52	8.5	6.0	.234	2.64	73	3.34	92	7.50	6.5
10	Gary Peters G. Peters	1.07	1963	CWS	41	19	8	.704	30	2.33	189	13	4	1	243.0	192	63	69	9	68	8	4	2	978	5	7.00	2.52	2.78	0.33	19.3	7.0	.260	2.56	67	2.34	67	7.11	32.1
11	Dwight Gooden D. Gooden	1.07	1984	NYM	31	17	9	.654	31	2.60	276	7	3	0	218.0	161	63	72	7	73	2	0	2	879	3	11.39	3.01	3.78	0.29	31.4	8.3	.296	2.97	74	1.68	48	6.65	44.6
12	Bill Swift B. Swift	1.08	1932	PIT	39	14	10	.583	23	3.61	64	11	0	4	214.1	205	86	97	15	26	2	14		865	1	2.69	1.09	2.46	0.63	7.4	3.0	.251	4.07	94	3.72	94	8.61	5.2
13	Mike Boddicker M. Boddicker	1.08	1983	BAL	27	16	8	.667	26	2.77	120	10	5	0	179.0	141	55	65	13	52	0	1	1	711	5	6.03	2.61	2.31	0.65	16.9	7.3	.243	3.27	69	3.22	81	7.09	15.4
14	Mark Fidrych M. Fidrych	1.08	1976	DET	31	19	9	.679	29	2.34	97	24	4	0	250.1	217	65	76	12	53	3	2	3	996	6	3.49	1.91	1.83	0.43	9.7	5.3	.247	2.73	63	3.15	86	7.80	13.7
15	Tim Belcher T. Belcher	1.08	1988	LAD	36	12	6	.667	27	2.91	152	4	1	4	179.2	143	58	65	8	51	2	5	7	719	4	7.61	2.55	2.98	0.40	21.1	7.1	.267	3.26	88	2.53	74	7.16	17.6
16	Don Sutton D. Sutton	1.08	1966	LAD	37	12	12	.500	35	2.99	209	6	2	0	225.2	192	75	82	19	52	3	0	6	916	5	8.34	2.07	4.02	0.76	22.8	5.7	.273	3.27	91	2.53	80	7.66	16.6
17	Cy Blanton C. Blanton	1.08	1935	PIT	35	18	13	.581	30	2.58	142	23	4	1	254.1	220	73	93	3	55	2	3		1,041	7	5.02	1.95	2.58	0.11	13.6	5.3	.259	3.29	64	2.77	68	7.79	37.4
18	Jim Turner J. Turner	1.09	1937	BSN	33	20	11	.645	30	2.38	69	24	5	1	256.2	228	68	80	13	52	0	3		1,031	0	2.42	1.82	1.33	0.46	6.7	5.0	.240	2.81	66	3.77	101	7.99	-3.1
19	Cliff Melton C. Melton	1.09	1937	NYG	46	20	9	.690	27	2.61	142	14	2	7	248.0	216	72	90	9	55	6	14		1,004	2	5.15	2.00	2.58	0.33	14.1	5.5	.261	3.27	67	3.10	78	7.84	23.5
20	Fergie Jenkins F. Jenkins	1.10	1966	TOT	61	6	8	.429	12	3.32	150	2	1	5	184.1	150	68	77	24	52	3	22	12	752	1	7.32	2.54	2.88	1.17	19.9	6.9	.241	3.76	88	3.51	96	7.32	3.3
21	Fritz Peterson F. Peterson	1.10	1966	NYY	34	12	11	.522	32	3.31	96	11	2	0	215.0	196	79	89	15	40	3	1	6	880	3	4.02	1.67	2.40	0.63	10.9	4.5	.249	3.73	98	3.17	91	8.20	7.5
22	Michael Pineda M. Pineda	1.10	2011	SEA	28	9	10	.474	28	3.74	173	0	0	0	171.0	133	71	76	18	55	5	0	1	696	9	9.11	2.89	3.15	0.95	24.9	7.9	.258	4.00	98	3.42	87	7.00	9.6
23	Jerry Koosman J. Koosman	1.10	1968	NYM	35	19	12	.613	34	2.08	178	17	7	0	263.2	221	61	72	16	69	8	0	7	1,058	8	6.08	2.36	2.58	0.55	16.8	6.5	.260	2.46	70	2.70	96	7.54	3.7
24	Elmer Riddle E. Riddle	1.10	1941	CIN	33	19	4	.826	22	2.24	80	15	4	1	216.2	180	54	68	8	59	5	4		884	2	3.32	2.45	1.36	0.33	9.0	6.7	.235	2.82	62	3.29	89	7.48	9.6
25	Al Downing A. Downing	1.10	1963	NYY	24	13	5	.722	22	2.56	171	10	4	0	175.2	114	50	52	7	80	0	2	1	707	5	8.76	4.10	2.14	0.36	24.2	11.3	.238	2.66	73	2.42	68	5.84	22.3