lowest era in a season since 1947, minimum 1.30 whip, minimum 15 gs

Since 1947, Jorge Sosa has the best ERA with a WHIP of 1.30 or higher and with 15+ starts in a season, with an ERA of 2.55 in 2005.

Interpreted as:

lowest era by a player in a season since 1947, minimum 1.30 whip, minimum 15 gs

	NAME	ERA	WHIP	GS	SEASON	TM	G	W	L	W%	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	Jorge Sosa J. Sosa	2.55	1.39	20	2005	ATL	44	13	3	.813	85	0	0	0	134.0	122	38	42	12	64	0	5	8	577	3	5.71	4.30	1.33	0.81	14.7	11.1	.264	2.82	61	4.34	103	8.19	-2.1
2	Andy Hassler A. Hassler	2.61	1.30	22	1974	CAL	23	7	11	.389	76	10	2	1	162.0	132	47	64	10	79	9	1	2	684	7	4.22	4.39	0.96	0.56	11.1	11.5	.239	3.56	77	4.06	116	7.33	-10.5
3	Scipio Spinks S. Spinks	2.67	1.31	16	1972	STL	16	5	5	.500	93	6	0	0	118.0	96	35	39	5	59	2	0	2	497	7	7.09	4.50	1.58	0.38	18.7	11.9	.269	2.97	77	2.92	87	7.32	5.7
4	Joe Kelly J. Kelly	2.69	1.35	15	2013	STL	37	10	5	.667	79	0	0	0	124.0	124	37	42	10	44	5	8	4	532	3	5.73	3.19	1.80	0.73	14.8	8.3	.289	3.05	73	4.00	108	9.00	-3.9
5	Jaime Garcia J. Garcia	2.70	1.32	28	2010	STL	28	13	8	.619	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	.292	3.53	69	3.40	87	8.32	9.3
6	Sam McDowell S. McDowell	2.70	1.43	24	1964	CLE	31	11	6	.647	177	6	2	1	173.1	148	52	60	8	100	3	3	6	760	11	9.19	5.19	1.77	0.42	23.3	13.2	.297	3.12	75	2.95	79	7.68	15.2
7	Bob Porterfield B. Porterfield	2.72	1.33	29	1952	WSH	31	13	14	.481	80	15	3	0	231.1	222	70	80	7	85	4	2		973	2	3.11	3.31	0.94	0.27	8.2	8.7	.270	3.11	76	3.25	90	8.64	9.7
8	Aaron Sele A. Sele	2.74	1.33	18	1993	BOS	18	7	2	.778	93	0	0	0	111.2	100	34	42	5	48	7	0	2	484	5	7.50	3.87	1.94	0.40	19.2	9.9	.287	3.39	61	3.37	78	8.06	11.7
9	Norm Charlton N. Charlton	2.74	1.30	16	1990	CIN	56	12	9	.571	117	1	1	2	154.1	131	47	53	10	70	4	13	4	650	9	6.82	4.08	1.67	0.58	18.0	10.8	.269	3.09	70	3.56	90	7.64	7.1
10	Bob Buhl B. Buhl	2.74	1.44	31	1957	MIL	34	18	7	.720	117	14	2	0	216.2	191	66	77	15	121	0	0	4	926	3	4.86	5.03	0.97	0.62	12.6	13.1	.262	3.20	77	3.95	112	7.93	-12.3
11	Steve Barber S. Barber	2.75	1.33	36	1963	BAL	39	20	13	.606	180	11	2	0	258.2	253	79	99	12	92	4	1	10	1,096	3	6.26	3.20	1.96	0.42	16.4	8.4	.298	3.44	79	2.80	80	8.80	20.3
12	Mark Portugal M. Portugal	2.77	1.30	33	1993	HOU	33	18	4	.818	131	1	1	0	208.0	194	64	75	10	77	4	0	3	876	9	5.67	3.33	1.70	0.43	15.0	8.8	.281	3.25	72	3.51	91	8.39	7.6
13	Nolan Ryan N. Ryan	2.77	1.34	37	1977	CAL	37	19	16	.543	341	22	4	0	299.0	198	92	110	12	204	9	0	7	1,272	21	10.26	6.14	1.67	0.36	26.8	16.0	.263	3.31	72	3.11	79	5.96	27.9
14	Jim Abbott J. Abbott	2.77	1.31	29	1992	CAL	29	7	15	.318	130	7	0	0	211.0	208	65	73	12	68	4	0	3	874	2	5.55	2.90	1.91	0.51	14.9	7.8	.297	3.11	70	3.31	82	8.87	16.4
15	Mel Parnell M. Parnell	2.77	1.33	33	1949	BSA	39	25	7	.781	122	27	4	2	295.1	258	91	102	8	134	5	5		1,240	9	3.72	4.08	0.91	0.24	9.8	10.8	.257	3.11	62	3.45	77	7.86	32.6
16	Andy Benes A. Benes	2.78	1.35	17	2002	STL	18	5	4	.556	64	1	0	0	97.0	80	30	39	10	51	5	0	3	417	0	5.94	4.73	1.25	0.93	15.3	12.2	.244	3.62	69	4.71	115	7.42	-6.7
17	Al Fitzmorris A. Fitzmorris	2.79	1.33	27	1974	KCR	34	13	6	.684	53	9	4	1	190.0	189	59	73	8	63	0	1	10	806	10	2.51	2.98	0.84	0.38	6.6	7.8	.265	3.46	75	3.55	100	8.95	-0.3
18	Denny Lemaster D. Lemaster	2.81	1.35	32	1968	HOU	33	10	15	.400	146	7	2	0	224.0	231	70	79	11	72	4	0	11	965	7	5.87	2.89	2.03	0.44	15.1	7.5	.301	3.17	96	2.74	99	9.28	0.6
19	Jose Rijo J. Rijo	2.84	1.34	19	1989	CIN	19	7	6	.538	86	1	1	0	111.0	101	35	39	6	48	2	0	3	464	4	6.97	3.89	1.79	0.49	18.5	10.3	.295	3.16	78	3.26	86	8.19	6.3
20	Al Brazle A. Brazle	2.84	1.39	19	1947	SLN	44	14	8	.636	85	7	0	4	168.0	186	53	65	7	48	2	11		713	4	4.55	2.57	1.77	0.38	11.9	6.7	.313	3.48	69	2.92	72	9.96	21.3
21	Herb Score H. Score	2.85	1.37	32	1955	CLE	33	16	10	.615	245	11	2	0	227.1	158	72	85	18	154	1	0	1	978	12	9.70	6.10	1.59	0.71	25.1	15.7	.250	3.37	72	3.29	84	6.26	15.6
22	Dave Roberts D. Roberts	2.85	1.31	36	1973	HOU	39	17	11	.607	119	12	6	0	249.1	264	79	92	15	62	2	0	8	1,054	3	4.30	2.24	1.92	0.54	11.3	5.9	.291	3.32	80	3.16	88	9.53	11.3
23	Scott Erickson S. Erickson	2.87	1.41	17	1990	MIN	19	8	4	.667	53	1	0	0	113.0	108	36	49	9	51	5	1	4	485	3	4.22	4.06	1.04	0.72	10.9	10.5	.270	3.90	71	4.38	112	8.60	-6
24	Hal Newhouser H. Newhouser	2.87	1.33	36	1947	DET	40	17	17	.500	176	24	3	2	285.0	268	91	105	9	110	2	4		1,216	11	5.56	3.47	1.60	0.28	14.5	9.0	.282	3.32	75	2.85	73	8.46	32.5
25	Ruben Gomez R. Gomez	2.88	1.40	32	1954	NYG	37	17	9	.654	106	10	4	0	221.2	202	71	85	20	109	7	1		964	5	4.30	4.43	0.97	0.81	11.0	11.3	.252	3.45	72	4.18	104	8.20	-4.4