lowest whip divided by earned runs in an mlb season with at least 60 ip since 1950

Since 1950, Robin Roberts has the fewest WHIP per earned run with 60.0+ innings pitched in a season, with 0.01 in 1956.

Interpreted as:

lowest whip divided by earned runs by a player in an MLB season with at least 60 ip since 1950

	NAME	WHIP/ER	IP	WHIP	ER	SEASON	TM	G	W	L	W%	GS	ERA	SO	CG	SHO	SV	H	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	Robin Roberts R. Roberts	0.01	297.1	1.24	147	1956	PHI	43	19	18	.514	37	4.45	157	22	1	3	328	155	46	40	2	6	3	1,228	2	4.75	1.21	3.93	1.39	12.8	3.3	.287	4.69	119	3.75	97	9.93	3.8
2	Fergie Jenkins F. Jenkins	0.01	313.0	1.04	118	1970	CHC	40	22	16	.579	39	3.39	274	24	3	0	265	128	30	60	7	1	6	1,265	9	7.88	1.73	4.57	0.86	21.7	4.7	.263	3.68	76	2.77	65	7.62	48.3
3	Mickey Lolich M. Lolich	0.01	308.0	1.26	142	1974	DET	41	16	21	.432	41	4.15	202	27	3	0	310	155	38	78	3	0	11	1,263	10	5.90	2.28	2.59	1.11	16.0	6.2	.289	4.53	109	3.65	98	9.06	3.2
4	Lew Burdette L. Burdette	0.01	289.2	1.21	131	1959	MIL	41	21	15	.583	39	4.07	105	20	4	1	312	144	38	38	1	2	3	1,193	2	3.26	1.18	2.76	1.18	8.8	3.2	.271	4.47	113	3.93	112	9.69	-16.1
5	Robin Roberts R. Roberts	0.01	336.2	1.02	111	1954	PHN	45	23	15	.605	38	2.97	185	29	4	4	289	116	35	56	5	6		1,331	2	4.95	1.50	3.30	0.94	13.9	4.2	.242	3.10	74	3.19	80	7.73	29.3
6	Mickey Lolich M. Lolich	0.01	376.0	1.14	122	1971	DET	45	25	14	.641	45	2.92	308	29	4	0	336	133	36	92	7	0	2	1,538	7	7.37	2.20	3.35	0.86	20.0	6.0	.274	3.18	83	2.84	78	8.04	32.5
7	Wilbur Wood W. Wood	0.01	320.1	1.20	128	1974	CWS	42	20	19	.513	42	3.60	169	22	1	0	305	143	27	80	9	0	8	1,316	5	4.75	2.25	2.11	0.76	12.8	6.1	.270	4.02	97	3.44	96	8.57	5
8	Wilbur Wood W. Wood	0.01	359.1	1.31	138	1973	CWS	49	24	20	.545	48	3.46	199	21	4	0	381	166	25	91	7	1	3	1,531	7	4.98	2.28	2.19	0.63	13.0	5.9	.294	4.16	89	3.17	82	9.54	27.9
9	Phil Niekro P. Niekro	0.01	342.0	1.24	129	1979	ATL	44	21	20	.512	44	3.39	208	23	1	0	311	160	41	113	11	0	8	1,436	18	5.47	2.97	1.84	1.08	14.5	7.9	.254	4.21	84	4.15	101	8.18	0.1
10	Catfish Hunter C. Hunter	0.01	298.2	1.13	117	1976	NYY	36	17	15	.531	36	3.53	173	21	2	0	268	126	28	68	3	0	5	1,210	6	5.21	2.05	2.54	0.84	14.3	5.6	.256	3.80	102	3.40	97	8.08	3.1
11	Robin Roberts R. Roberts	0.01	257.1	1.17	122	1959	PHI	35	15	17	.469	35	4.27	137	19	2	0	267	137	34	35	5	0	4	1,075	1	4.79	1.22	3.91	1.19	12.7	3.3	.270	4.79	108	3.66	95	9.34	5.9
12	LaMarr Hoyt L. Hoyt	0.01	260.2	1.02	106	1983	CWS	36	24	10	.706	36	3.66	148	11	1	0	236	115	27	31	1	0	4	1,034	1	5.11	1.07	4.77	0.93	14.3	3.0	.253	3.97	88	3.32	82	8.15	20.5
13	Gaylord Perry G. Perry	0.01	344.0	1.25	129	1973	CLE	41	19	19	.500	41	3.38	238	29	7	0	315	143	34	115	5	0	9	1,410	17	6.23	3.01	2.07	0.89	16.9	8.2	.276	3.74	87	3.51	90	8.24	14.2
14	Bert Blyleven B. Blyleven	0.01	271.2	1.18	121	1986	MIN	36	17	14	.548	36	4.01	215	16	3	0	262	134	50	58	10	0	4	1,126	4	7.12	1.92	3.71	1.66	19.1	5.2	.267	4.44	93	4.32	104	8.68	-5
15	Mickey Lolich M. Lolich	0.01	308.2	1.28	131	1973	DET	42	16	15	.516	42	3.82	214	17	3	0	315	143	35	79	5	0	7	1,286	12	6.24	2.30	2.71	1.02	16.6	6.1	.294	4.17	97	3.46	88	9.18	15.5
16	Gaylord Perry G. Perry	0.01	328.2	1.14	117	1970	SFG	41	23	13	.639	41	3.20	214	23	5	0	292	138	27	84	8	0	8	1,336	11	5.86	2.30	2.55	0.74	16.0	6.3	.264	3.78	80	3.24	85	8.00	20.5
17	Jon Lieber J. Lieber	0.01	251.0	1.20	123	2000	CHC	35	12	11	.522	35	4.41	192	6	1	0	248	130	36	54	10	0	3	1,047	2	6.88	1.94	3.56	1.29	18.3	5.2	.281	4.66	97	4.23	90	8.89	13.4
18	Fergie Jenkins F. Jenkins	0.01	328.1	1.01	103	1974	TEX	41	25	12	.676	41	2.82	225	29	6	0	286	117	27	45	8	0	3	1,305	4	6.17	1.23	5.00	0.74	17.2	3.4	.259	3.21	79	2.75	77	7.84	29.4
19	Phil Niekro P. Niekro	0.01	330.1	1.45	148	1977	ATL	44	16	20	.444	43	4.03	262	20	2	0	315	166	26	164	8	1	12	1,428	17	7.14	4.47	1.60	0.71	18.3	11.5	.299	4.52	95	3.73	88	8.58	18.1
20	Ralph Terry R. Terry	0.01	298.2	1.05	106	1962	NYY	43	23	12	.657	39	3.19	176	14	3	2	257	123	40	57	3	2	1	1,191	2	5.30	1.72	3.09	1.21	14.8	4.8	.237	3.71	84	3.78	97	7.74	3.7
21	Fergie Jenkins F. Jenkins	0.01	270.0	1.17	118	1975	TEX	37	17	18	.486	37	3.93	157	22	4	0	261	130	37	56	9	0	7	1,119	3	5.23	1.87	2.80	1.23	14.0	5.0	.260	4.33	104	3.92	105	8.70	-6
22	Lew Burdette L. Burdette	0.01	272.1	1.20	121	1961	MIL	40	18	11	.621	36	4.00	92	14	3	0	295	131	31	33	3	4	3	1,126	1	3.04	1.09	2.79	1.02	8.2	2.9	.273	4.33	104	3.77	101	9.75	-1.9
23	Bill Monbouquette B. Monbouquette	0.01	266.2	1.13	113	1963	BOS	37	20	10	.667	36	3.81	174	13	1	0	258	119	31	42	0	1	6	1,090	3	5.87	1.42	4.14	1.05	16.0	3.9	.269	4.02	100	3.16	82	8.71	19.7
24	Mike Cuellar M. Cuellar	0.01	297.2	1.15	115	1970	BAL	40	24	8	.750	40	3.48	190	21	4	0	273	126	34	69	1	0	5	1,214	6	5.74	2.09	2.75	1.03	15.7	5.7	.260	3.81	95	3.55	91	8.25	11.1
25	Jim Bibby J. Bibby	0.01	264.0	1.39	139	1974	TEX	41	19	19	.500	41	4.74	149	11	5	0	255	146	25	113	9	0	4	1,134	11	5.08	3.85	1.32	0.85	13.1	10.0	.274	4.98	132	4.06	114	8.69	-15.5