Danny Darwin had the lowest ERA in the NL in 1990, with an ERA of 2.21.

Interpreted as:

Who had the best era with a minimum of 1 IP per team game in the nl in 1990?

	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	Danny Darwin D. Darwin	2.21	1990	HOU	48	11	4	.733	17	109	3	0	2	162.2	136	40	42	11	31	4	14	4	646	0	6.03	1.72	3.52	0.61	16.9	4.8	1.03	.255	2.32	61	2.98	83	7.52	11.3
2	Zane Smith Z. Smith	2.55	1990	TOT	33	12	9	.571	31	130	4	2	0	215.1	196	61	77	15	50	3	1	4	860	2	5.43	2.09	2.60	0.63	15.1	5.8	1.14	.273	3.22	68	3.24	87	8.19	11.6
3	Ed Whitson E. Whitson	2.60	1990	SDP	32	14	9	.609	32	127	6	3	0	228.2	215	66	73	13	47	1	0	8	918	2	5.00	1.85	2.70	0.51	13.8	5.1	1.15	.277	2.87	68	3.06	78	8.46	21.1
4	Frank Viola F. Viola	2.67	1990	NYM	35	20	12	.625	35	182	7	3	0	249.2	227	74	83	15	60	2	0	2	1,016	11	6.56	2.16	3.03	0.54	17.9	5.9	1.15	.280	2.99	73	2.87	77	8.18	23.6
5	Jose Rijo J. Rijo	2.70	1990	CIN	29	14	8	.636	29	152	7	1	0	197.0	151	59	65	10	78	2	0	1	801	2	6.94	3.56	1.95	0.46	19.0	9.7	1.16	.252	2.97	69	3.13	79	6.90	18
6	Doug Drabek D. Drabek	2.76	1990	PIT	33	22	6	.786	33	131	9	3	0	231.1	190	71	78	15	56	3	0	2	918	6	5.10	2.18	2.34	0.58	14.3	6.1	1.06	.245	3.03	75	3.27	87	7.39	12.2
7	Ramon Martinez R. Martinez	2.92	1990	LAD	33	20	6	.769	33	223	12	3	0	234.1	191	76	89	22	67	4	0	5	950	3	8.56	2.57	3.33	0.84	23.5	7.1	1.10	.267	3.42	79	3.03	82	7.34	18
8	Oil Can Boyd O. Can Boyd	2.93	1990	MON	31	10	6	.625	31	113	3	3	0	190.2	164	62	64	19	52	3	0	10	774	3	5.33	2.45	2.17	0.90	14.6	6.7	1.13	.247	3.02	77	3.77	102	7.74	-1.6
9	Dennis Martinez D. Martinez	2.95	1990	MON	32	10	11	.476	32	156	7	2	0	226.0	191	74	80	16	49	6	0	9	908	1	6.21	1.95	3.18	0.64	17.2	5.4	1.06	.257	3.19	78	3.07	83	7.61	16.2
10	Bruce Hurst B. Hurst	3.14	1990	SDP	33	11	9	.550	33	162	9	4	0	223.2	188	78	85	21	63	1	0	5	903	7	6.52	2.54	2.57	0.85	17.9	7.0	1.12	.255	3.42	82	3.43	88	7.56	11.7
11	Charlie Leibrandt C. Leibrandt	3.16	1990	ATL	24	9	11	.450	24	76	5	2	0	162.1	164	57	72	9	35	4	0	3	680	4	4.21	1.94	2.17	0.50	11.2	5.1	1.23	.279	3.99	79	3.30	85	9.09	10.7
12	David Cone D. Cone	3.23	1990	NYM	31	14	10	.583	30	233	6	2	0	211.2	177	76	84	21	65	1	1	1	860	10	9.91	2.76	3.58	0.89	27.1	7.6	1.14	.289	3.57	89	2.82	76	7.53	21.1
13	Mike Harkey M. Harkey	3.26	1990	CHC	27	12	6	.667	27	94	2	1	0	173.2	153	63	71	14	59	7	0	8	728	8	4.87	3.06	1.59	0.73	12.9	8.1	1.22	.251	3.68	82	3.91	101	7.93	-0.6
14	Terry Mulholland T. Mulholland	3.34	1990	PHI	33	9	10	.474	26	75	6	1	0	180.2	172	67	78	15	42	2	2	7	746	7	3.74	2.09	1.79	0.75	10.1	5.6	1.18	.257	3.89	87	3.78	99	8.57	1
15	Jack Armstrong J. Armstrong	3.42	1990	CIN	29	12	9	.571	27	110	2	1	0	166.0	151	63	72	9	59	6	1	7	704	7	5.96	3.20	1.86	0.49	15.6	8.4	1.27	.273	3.90	87	3.35	84	8.19	11.3
16	Greg Maddux G. Maddux	3.46	1990	CHC	35	15	15	.500	35	144	8	2	0	237.0	242	91	116	11	71	4	0	10	1,011	3	5.47	2.70	2.03	0.42	14.2	7.0	1.32	.296	4.41	87	3.14	81	9.19	19
17	Sid Fernandez S. Fernandez	3.46	1990	NYM	30	9	14	.391	30	181	2	1	0	179.1	130	69	79	18	67	5	0	4	735	1	9.08	3.36	2.70	0.90	24.6	9.1	1.10	.241	3.96	95	3.29	89	6.52	8.4
18	Joe Magrane J. Magrane	3.59	1990	STL	31	10	17	.370	31	100	3	2	0	203.1	204	81	86	10	59	8	0	7	855	11	4.43	2.61	1.69	0.44	11.7	6.9	1.29	.286	3.81	94	3.44	91	9.03	7.8
19	Andy Benes A. Benes	3.60	1990	SDP	32	10	11	.476	31	140	2	0	0	192.1	177	77	87	18	69	1	1	5	811	2	6.55	3.23	2.03	0.84	17.3	8.5	1.28	.273	4.07	94	3.65	94	8.28	5.4
20	Mark Portugal M. Portugal	3.62	1990	HOU	32	11	10	.524	32	136	1	0	0	196.2	187	79	90	21	67	4	0	4	831	6	6.22	3.07	2.03	0.96	16.4	8.1	1.29	.275	4.12	99	3.89	108	8.56	-7.2
21	Mike Morgan M. Morgan	3.75	1990	LAD	33	11	15	.423	33	106	6	4	0	211.0	216	88	100	19	60	5	0	5	891	4	4.52	2.56	1.77	0.81	11.9	6.7	1.31	.281	4.27	101	3.89	105	9.21	-4.5
22	Jim Deshaies J. Deshaies	3.78	1990	HOU	34	7	12	.368	34	119	2	0	0	209.1	186	88	93	21	84	8	0	9	881	3	5.12	3.61	1.42	0.90	13.5	9.5	1.29	.254	4.00	104	4.29	119	8.00	-17.4
23	John Burkett J. Burkett	3.79	1990	SFG	33	14	7	.667	32	118	2	0	1	204.0	201	86	92	18	61	4	1	7	857	3	5.21	2.69	1.93	0.79	13.8	7.1	1.28	.279	4.06	103	3.75	100	8.87	0
24	Tom Browning T. Browning	3.80	1990	CIN	35	15	9	.625	35	99	2	1	0	227.2	235	96	98	24	52	5	0	13	957	5	3.91	2.06	1.90	0.95	10.3	5.4	1.26	.272	3.87	97	4.05	102	9.29	-1.3
25	Mike Scott M. Scott	3.81	1990	HOU	32	9	13	.409	32	121	4	2	0	205.2	194	87	102	27	66	1	0	6	871	1	5.29	2.89	1.83	1.18	13.9	7.6	1.26	.255	4.46	105	4.31	120	8.49	-17.6