lowest era + by a rookie pitcher in a season since 1960

Since 1960, Stan Bahnsen has the lowest ERA by a rookie, with an ERA of 2.05 in 1968.

Interpreted as:

lowest era with a minimum of 1 IP per team game + by a rookie pitcher in a season since 1960

	NAME	ERA	SEASON	TM	G	W	L	W%	GS	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%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Stan Bahnsen S. Bahnsen	2.05	1968	NYY	37	17	12	.586	34	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	1.06	.245	2.42	73	2.64	88	7.27	10.1
2	Jerry Koosman J. Koosman	2.08	1968	NYM	35	19	12	.613	34	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	1.10	.260	2.46	70	2.70	96	7.54	3.7
3	Jose Fernandez J. Fernandez	2.19	2013	MIA	28	12	6	.667	28	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	0.98	.240	2.45	60	2.72	75	5.79	18.1
4	Jon Matlack J. Matlack	2.32	1972	NYM	34	15	10	.600	32	169	8	4	0	244.0	215	63	79	14	71	2	1	14	1,003	7	6.23	2.62	2.38	0.52	16.8	7.1	1.17	.269	2.91	69	2.65	81	7.93	16.5
5	Gary Peters G. Peters	2.33	1963	CWS	41	19	8	.704	30	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	1.07	.260	2.56	67	2.34	67	7.11	32.1
6	Mark Fidrych M. Fidrych	2.34	1976	DET	31	19	9	.679	29	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	1.08	.247	2.73	63	3.15	86	7.80	13.7
7	Fernando Valenzuela F. Valenzuela	2.48	1981	LAD	25	13	7	.650	25	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	1.05	.255	2.57	73	2.44	72	6.55	20.4
8	Ken Forsch K. Forsch	2.53	1971	HOU	33	8	8	.500	23	131	7	2	0	188.1	162	53	60	8	53	4	4	5	771	8	6.26	2.53	2.47	0.38	17.0	6.9	1.14	.268	2.87	75	2.52	76	7.74	16.7
9	Hideo Nomo H. Nomo	2.54	1995	LAD	28	13	6	.684	28	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	1.06	.246	2.96	65	2.88	71	5.83	26.1
10	Al Downing A. Downing	2.56	1963	NYY	24	13	5	.722	22	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	1.10	.238	2.66	73	2.42	68	5.84	22.3
11	Gary Nolan G. Nolan	2.58	1967	CIN	33	14	8	.636	32	206	8	5	0	226.2	193	65	73	18	62	5	1	7	932	3	8.18	2.46	3.32	0.71	22.1	6.7	1.13	.273	2.90	71	2.64	76	7.66	20.6
12	Rickey Clark R. Clark	2.59	1967	CAL	32	12	11	.522	30	81	1	1	0	174.0	144	50	69	15	69	6	0	0	729	12	4.19	3.57	1.17	0.78	11.1	9.5	1.22	.231	3.57	83	4.02	125	7.45	-16.6
13	Dwight Gooden D. Gooden	2.60	1984	NYM	31	17	9	.654	31	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	1.07	.296	2.97	74	1.68	48	6.65	44.6
14	Dennis Eckersley D. Eckersley	2.60	1975	CLE	34	13	7	.650	24	152	6	2	2	186.2	147	54	61	16	90	7	5	8	794	4	7.33	4.34	1.69	0.77	19.1	11.3	1.27	.248	2.94	69	3.62	93	7.09	5.6
15	Bill Singer B. Singer	2.64	1967	LAD	32	12	8	.600	29	169	7	3	0	204.1	185	60	68	5	61	8	1	11	854	10	7.44	2.69	2.77	0.22	19.8	7.1	1.20	.295	3.00	85	2.22	74	8.15	18.3
16	Orel Hershiser O. Hershiser	2.66	1984	LAD	45	11	8	.579	20	150	8	4	2	189.2	160	56	65	9	50	4	10	8	771	8	7.12	2.37	3.00	0.43	19.5	6.5	1.11	.271	3.08	77	2.65	77	7.59	17.2
17	Dick Hughes D. Hughes	2.67	1967	STL	37	16	6	.727	27	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	0.95	.224	2.91	80	3.09	96	6.64	3.2
18	Michael Soroka M. Soroka	2.68	2019	ATL	29	13	4	.765	29	142	0	0	0	174.2	153	52	56	14	41	7	0	1	701	3	7.32	2.11	3.46	0.72	20.3	5.8	1.11	.280	2.89	60	3.44	79	7.88	18.3
19	Wally Bunker W. Bunker	2.69	1964	BAL	29	19	5	.792	29	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	1.04	.214	3.03	77	3.65	100	6.77	-0.2
20	Jaime Garcia J. Garcia	2.70	2010	STL	28	13	8	.619	28	132	1	1	0	163.1	151	49	64	9	64	3	0	4	695	4	7.27	3.53	2.06	0.50	19.0	9.2	1.32	.292	3.53	69	3.40	87	8.32	9.3
21	Pat Zachry P. Zachry	2.74	1976	CIN	38	14	7	.667	28	143	6	1	0	204.0	170	62	70	8	83	2	2	4	842	5	6.31	3.66	1.72	0.35	17.0	9.9	1.24	.267	3.09	77	2.99	86	7.50	11.3
22	Bob Moose B. Moose	2.74	1968	PIT	38	8	12	.400	22	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	1.04	.257	3.22	93	2.06	74	7.17	14
23	Tom Seaver T. Seaver	2.76	1967	NYM	35	16	13	.552	34	170	18	2	0	251.0	224	77	85	19	78	5	1	6	1,029	5	6.10	2.80	2.18	0.68	16.5	7.6	1.20	.271	3.05	83	3.16	98	8.03	1.7
24	Kevin Appier K. Appier	2.76	1990	KCR	32	12	8	.600	24	127	3	3	0	185.2	179	57	67	13	54	6	1	2	784	6	6.16	2.62	2.35	0.63	16.2	6.9	1.25	.284	3.25	71	3.31	88	8.68	9.1
25	Paul Hartzell P. Hartzell	2.77	1976	CAL	37	7	4	.636	15	51	7	2	2	166.0	166	51	64	6	43	10	14	5	692	3	2.77	2.33	1.19	0.33	7.4	6.2	1.26	.275	3.47	82	3.44	100	9.00	-0.5