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

Rob Murphy has the best 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	Bob Veale B. Veale	1.04	77.2	1963	PIT	34	5	2	.714	7	68	3	2	3	59	9	15	1	40	1	10	2	321	5	7.88	4.64	1.70	0.12	21.2	12.5	1.27	.275	1.74	32	2.48	77	6.84	6.6
3	Denny Driscoll D. Driscoll	1.21	201.0	1882	PIT	23	13	9	.591	23	59	23	0	0	162	27	73	0	12		0		799	7	2.64	0.54	4.92	0.00	7.4	1.5	0.87		3.27	45	2.36	84	7.25	10.2
4	John Weyhing J. Weyhing	1.23	65.2	1888	CIN	8	3	4	.429	8	30	7	0	0	52	9	26	0	17	1	0		266	1	4.11	2.33	1.76	0.00	11.3	6.4	1.05	.239	3.56	40	2.49	83	7.13	3.9
5	Harry Krause H. Krause	1.39	213.0	1909	PHA	32	18	8	.692	21	139	16	7	0	151	33	49	2	49	13	8		801	2	5.87	2.07	2.84	0.08	17.4	6.1	0.94	.249	2.07	58	1.91	82	6.38	9.5
6	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
7	Jack Pfiester J. Pfiester	1.51	250.2	1906	CHC	31	20	8	.714	29	153	20	4	0	173	42	63	3	63	13	2		966	4	5.49	2.26	2.43	0.11	15.8	6.5	0.94	.232	2.26	57	2.21	80	6.21	15.4
8	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
9	Al Brazle A. Brazle	1.53	88.0	1943	SLN	13	8	2	.800	9	26	8	1	0	74	15	18	0	29	0	2		352	2	2.66	2.97	0.90	0.00	7.4	8.2	1.17	.249	1.84	45	2.81	84	7.57	5.2
10	Joe Hoerner J. Hoerner	1.54	76.0	1966	STL	57	5	1	.833	0	63	0	0	13	57	13	16	5	21	4	39	8	303	1	7.46	2.49	3.00	0.59	20.8	6.9	1.03	.248	1.89	43	2.74	79	6.75	6.1
11	Otto Hess O. Hess	1.67	151.1	1904	CLE	21	8	7	.533	16	64	15	4	0	134	28	60	2	31	5	5		598	5	3.81	1.84	2.06	0.12	10.7	5.2	1.09	.266	3.57	65	2.46	99	7.97	0.3
12	Frank Killen F. Killen	1.68	96.2	1891	MIL	11	7	4	.636	11	38	11	2	0	73	18	42	1	51	3	0		415	4	3.54	4.75	0.75	0.09	9.2	12.3	1.28	.224	3.91	41	3.55	90	6.80	6
13	Bill Burns B. Burns	1.70	164.0	1908	WSH	23	6	11	.353	19	55	11	2	0	135	31	58	3	18	4	1		612	1	3.02	0.99	3.06	0.16	9.0	2.9	0.93	.248	3.18	74	2.07	96	7.41	0.7
14	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
15	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
16	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
17	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
18	Rube Bressler R. Bressler	1.77	147.2	1914	PHA	29	10	4	.714	10	96	8	1	2	112	29	37	1	56	4	15		569	3	5.85	3.41	1.71	0.06	16.9	9.8	1.14	.269	2.26	65	2.44	87	6.83	5.8
19	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
20	Vean Gregg V. Gregg	1.80	244.2	1911	CLE	34	23	7	.767	26	125	22	5	0	172	49	67	2	86	10	8		937	8	4.60	3.16	1.45	0.07	13.3	9.2	1.05	.238	2.46	53	3.03	93	6.33	6.7
21	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
22	Hippo Vaughn H. Vaughn	1.83	221.2	1910	NYH	30	13	11	.542	25	107	18	5	1	190	45	76	1	58	10	3		869	7	4.34	2.35	1.84	0.04	12.3	6.7	1.12	.273	3.09	69	2.34	86	7.71	10.3
23	Duster Mails D. Mails	1.85	63.1	1920	CLE	9	7	0	1.000	8	25	6	2	0	54	13	18	1	18	0	1		253	1	3.55	2.56	1.39	0.14	9.9	7.1	1.14	.254	2.56	48	3.02	81	7.67	4.9
24	Lady Baldwin L. Baldwin	1.86	179.1	1885	DET	21	11	9	.550	20	135	19	1	1	137	37	84	2	28		1		724	8	6.78	1.41	4.82	0.10	18.6	3.9	0.92		4.22	67	1.99	66	6.88	19.8
25	Reb Russell R. Russell	1.90	316.2	1913	CWS	52	22	16	.579	36	122	26	8	4	250	67	89	2	79	7	10		1,221	6	3.47	2.25	1.54	0.06	10.0	6.5	1.04	.245	2.53	67	2.68	92	7.11	7.1