which rookie left handed pitcher has the lowest era with at least 50 innings pitched in a season since 1970

Since 1970, Rob Murphy has the lowest ERA by a rookie left-hander with 50.0+ innings pitched, with an ERA of 0.72 in 1986.

	NAME	ERA	IP	SEASON	TM	G	W	L	W%	GS	SO	CG	SHO	SV	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Rob Murphy R. Murphy	0.72	50.1	1986	CIN	34	6	0	1.000	0	36	0	0	1	26	4	4	0	21	0	12	2	195	5	6.44	3.75	1.71	0.00	18.5	10.8	0.93	.188	0.72	19	2.58	67	4.65	7
2	Steve Mingori S. Mingori	1.43	56.2	1971	CLE	54	1	2	.333	0	45	0	0	4	31	9	10	2	24	1	24	6	221	1	7.15	3.81	1.88	0.32	20.4	10.9	0.97	.195	1.59	40	2.64	71	4.92	6.5
3	Luis Avilan L. Avilan	1.52	65.0	2013	ATL	75	5	0	1.000	0	38	0	0	0	40	11	12	1	22	4	7	2	256	3	5.26	3.05	1.73	0.14	14.8	8.6	0.95	.204	1.66	41	3.27	90	5.54	2.7
4	Alex Torres A. Torres	1.71	58.0	2013	TBR	39	4	2	.667	0	62	0	0	0	32	11	12	1	20	3	5	1	226	1	9.62	3.10	3.10	0.16	27.4	8.8	0.90	.221	1.86	45	2.32	60	4.97	10.2
5	Bryan Hudson B. Hudson	1.73	62.1	2024	MIL	43	6	1	.857	0	62	0	0	0	28	12	12	7	17	3	1	0	231	1	8.95	2.45	3.65	1.01	26.8	7.4	0.72	.148	1.73	42	3.59	88	4.04	3.5
6	Al Holland A. Holland	1.75	82.1	1980	SFG	54	5	3	.625	0	65	0	0	7	71	16	21	2	34	1	31	8	349	1	7.11	3.72	1.91	0.22	18.6	9.7	1.28	.279	2.30	51	2.76	80	7.76	6.2
7	Tom Cosgrove T. Cosgrove	1.75	51.1	2023	SDP	54	1	2	.333	0	44	0	0	1	31	10	12	3	19	5	16	1	205	1	7.71	3.33	2.32	0.53	21.5	9.3	0.97	.209	2.10	42	3.70	85	5.44	3.6
8	Rafael Perez R. Perez	1.78	60.2	2007	CLE	44	1	2	.333	0	62	0	0	1	41	12	15	5	15	0	11	2	236	4	9.20	2.23	4.13	0.74	26.3	6.4	0.92	.234	2.23	40	3.00	69	6.08	9.2
9	Zach Duke Z. Duke	1.81	84.2	2005	PIT	14	8	2	.800	14	58	0	0	0	79	17	20	3	23	2	0	2	341	1	6.17	2.44	2.52	0.32	17.0	6.7	1.20	.298	2.13	43	2.99	72	8.40	11.2
10	Jonny Venters J. Venters	1.95	83.0	2010	ATL	79	4	4	.500	0	93	0	0	1	61	18	30	1	39	8	17	2	350	4	10.08	4.23	2.38	0.11	26.6	11.1	1.20	.287	3.25	49	2.69	68	6.61	11.7
11	Chuck McElroy C. McElroy	1.95	101.1	1991	CHC	71	6	2	.750	0	92	0	0	3	73	22	33	7	57	0	12	7	419	1	8.17	5.06	1.61	0.62	22.0	13.6	1.28	.251	2.93	51	3.62	94	6.48	2.7
12	Brock Burke B. Burke	1.97	82.1	2022	TEX	52	7	5	.583	0	90	0	0	0	63	18	25	9	24	2	5	1	328	2	9.84	2.62	3.75	0.98	27.4	7.3	1.06	.266	2.73	50	3.29	81	6.89	6.9
13	Richard Bleier R. Bleier	1.99	63.1	2017	BAL	57	2	1	.667	0	26	0	0	0	62	14	23	6	13	4	14	3	265	5	3.69	1.85	2.00	0.85	9.8	4.9	1.18	.259	3.27	45	4.37	96	8.81	1.4
14	Scott Sauerbeck S. Sauerbeck	2.00	67.2	1999	PIT	65	4	1	.800	0	55	0	0	2	53	15	19	6	38	4	16	5	287	3	7.32	5.05	1.45	0.80	19.2	13.2	1.34	.255	2.53	43	4.51	99	7.05	0.4
15	Geoff Zahn G. Zahn	2.03	79.2	1974	LAD	21	3	5	.375	10	33	1	0	0	78	18	28	3	16	2	3	1	330	2	3.73	1.81	2.06	0.34	10.0	4.8	1.18	.272	3.16	59	2.91	80	8.81	6.2
16	Dave Righetti D. Righetti	2.05	105.1	1981	NYY	15	8	4	.667	15	89	2	0	0	75	24	25	1	38	0	0	0	422	1	7.60	3.25	2.34	0.09	21.1	9.0	1.07	.252	2.14	58	2.11	58	6.41	18.2
17	Carlos Diaz C. Diaz	2.05	83.1	1983	NYM	54	3	1	.750	0	64	0	0	2	62	19	22	1	35	1	20	13	339	2	6.91	3.78	1.83	0.11	18.9	10.3	1.16	.256	2.38	57	2.66	73	6.70	9.1
18	Justin Wilson J. Wilson	2.08	73.2	2013	PIT	58	6	1	.857	0	59	0	0	0	50	17	17	4	28	3	8	1	295	5	7.21	3.42	2.11	0.49	20.0	9.5	1.06	.229	2.08	58	3.41	93	6.11	1.9
19	Don Carman D. Carman	2.08	86.1	1985	PHI	71	9	4	.692	0	87	0	0	7	52	20	25	6	38	2	33	3	342	1	9.07	3.96	2.29	0.63	25.4	11.1	1.04	.220	2.61	56	2.96	82	5.42	6.4
20	Tom Martin T. Martin	2.09	56.0	1997	HOU	55	5	3	.625	0	36	0	0	2	52	13	13	2	23	1	18	2	236	3	5.79	3.70	1.57	0.32	15.3	9.7	1.34	.287	2.09	53	3.57	90	8.36	2.6
21	Al Hrabosky A. Hrabosky	2.09	56.0	1973	STL	44	2	4	.333	0	57	0	0	5	45	13	15	2	21	2	17	6	234	4	9.16	3.38	2.71	0.32	24.4	9.0	1.18	.283	2.41	57	2.22	60	7.23	9.1
22	Steve Frey S. Frey	2.10	55.2	1990	MON	51	8	2	.800	0	29	0	0	9	44	13	15	4	29	1	21	6	236	0	4.69	4.69	1.00	0.65	12.3	12.3	1.31	.231	2.43	55	4.31	116	7.11	-3.8
23	Tyler Holton T. Holton	2.11	85.1	2023	DET	59	3	2	.600	1	74	0	0	1	56	20	21	9	18	1	7	1	324	4	7.80	1.90	4.11	0.95	22.8	5.6	0.87	.212	2.21	50	3.56	84	5.91	6.5
24	Dylan Lee D. Lee	2.13	50.2	2022	ATL	46	5	1	.833	0	59	0	0	0	40	12	16	5	10	0	5	1	201	0	10.48	1.78	5.90	0.89	29.4	5.0	0.99	.276	2.84	52	2.65	67	7.11	7.3
25	Francisco Liriano F. Liriano	2.16	121.0	2006	MIN	28	12	3	.800	16	144	0	0	1	89	29	31	9	32	1	2	0	473	9	10.71	2.38	4.50	0.67	30.4	6.8	1.00	.279	2.31	48	2.54	58	6.62	25.3