Clayton Kershaw had the best ERA in the NL in 2017, with an ERA of 2.31.

Interpreted as:

Who had the best era with a minimum of 1 IP per team game in the nl in 2017?

	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	Clayton Kershaw C. Kershaw	2.31	2017	LAD	27	18	4	.818	27	202	1	0	0	175.0	136	45	49	23	30	0	0	0	679	4	10.39	1.54	6.73	1.18	29.7	4.4	0.95	.267	2.52	56	3.06	72	6.99	23
2	Max Scherzer M. Scherzer	2.51	2017	WSH	31	16	6	.727	31	268	2	0	0	200.2	126	56	62	22	55	11	0	2	780	4	12.02	2.47	4.87	0.99	34.4	7.1	0.90	.245	2.78	57	2.89	66	5.65	33.2
3	Stephen Strasburg S. Strasburg	2.52	2017	WSH	28	15	4	.789	28	204	1	1	0	175.1	131	49	55	13	47	7	0	5	701	3	10.47	2.41	4.34	0.67	29.1	6.7	1.02	.274	2.82	57	2.71	62	6.72	32.4
4	Robbie Ray R. Ray	2.89	2017	ARI	28	15	5	.750	28	218	1	1	0	162.0	116	52	57	23	71	5	0	3	665	8	12.11	3.94	3.07	1.28	32.8	10.7	1.15	.267	3.17	63	3.71	85	6.44	11.6
5	Gio Gonzalez G. Gonzalez	2.96	2017	WSH	32	15	9	.625	32	188	0	0	0	201.0	158	66	69	21	79	7	0	5	827	7	8.42	3.54	2.38	0.94	22.7	9.6	1.18	.258	3.09	67	3.92	89	7.07	10.7
6	Zack Greinke Z. Greinke	3.20	2017	ARI	32	17	7	.708	32	215	1	0	0	202.1	172	72	80	25	45	0	0	0	801	12	9.56	2.00	4.78	1.11	26.8	5.6	1.07	.285	3.56	70	3.30	76	7.65	23.7
7	Lance Lynn L. Lynn	3.43	2017	STL	33	11	8	.579	33	153	0	0	0	186.1	151	71	80	27	78	10	0	5	776	2	7.39	3.77	1.96	1.30	19.7	10.1	1.23	.244	3.86	82	4.81	114	7.29	-12.4
8	Jimmy Nelson J. Nelson	3.49	2017	MIL	29	12	6	.667	29	199	1	0	0	175.1	171	68	75	16	48	9	0	1	728	6	10.21	2.46	4.15	0.82	27.3	6.6	1.25	.340	3.85	80	3.04	70	8.78	25.5
9	Jake Arrieta J. Arrieta	3.53	2017	CHC	30	14	10	.583	30	163	0	0	0	168.1	150	66	82	23	55	10	0	3	707	14	8.71	2.94	2.96	1.23	23.1	7.8	1.22	.279	4.38	81	4.15	96	8.02	3.1
10	Jacob deGrom J. deGrom	3.53	2017	NYM	31	15	10	.600	31	239	1	0	0	201.1	180	79	87	28	59	2	0	5	827	7	10.68	2.64	4.05	1.25	28.9	7.1	1.19	.305	3.89	87	3.49	83	8.05	16.7
11	Aaron Nola A. Nola	3.54	2017	PHI	27	12	11	.522	27	184	0	0	0	168.0	154	66	67	18	49	2	0	2	693	1	9.86	2.63	3.76	0.96	26.6	7.1	1.21	.309	3.59	82	3.26	74	8.25	21
12	Carlos Martinez C. Martinez	3.64	2017	STL	32	12	11	.522	32	217	2	2	0	205.0	179	83	93	27	71	8	0	3	858	9	9.53	3.12	3.06	1.19	25.3	8.3	1.22	.284	4.08	88	3.90	92	7.86	7.5
13	José Ureña J. Ureña	3.82	2017	MIA	34	14	7	.667	28	113	0	0	0	169.2	152	72	77	26	64	14	2	4	724	5	5.99	3.39	1.77	1.38	15.6	8.8	1.27	.249	4.08	93	5.19	124	8.06	-19.7
14	Jhoulys Chacin J. Chacin	3.89	2017	SDP	32	13	10	.565	32	153	0	0	0	180.1	157	78	82	19	72	14	0	5	765	7	7.64	3.59	2.13	0.95	20.0	9.4	1.27	.272	4.09	93	4.25	100	7.84	0.3
15	Zach Davies Z. Davies	3.90	2017	MIL	33	17	9	.654	33	124	0	0	0	191.1	204	83	90	20	55	9	0	3	817	2	5.83	2.59	2.25	0.94	15.2	6.7	1.35	.302	4.23	89	4.22	97	9.60	3.1
16	Patrick Corbin P. Corbin	4.03	2017	ARI	33	14	13	.519	32	178	0	0	0	189.2	208	85	97	26	61	3	0	8	826	10	8.45	2.89	2.92	1.23	21.5	7.4	1.42	.326	4.60	89	4.07	93	9.87	6.2
17	Michael Wacha M. Wacha	4.13	2017	STL	30	12	9	.571	30	158	1	1	0	165.2	170	76	82	17	55	3	0	3	701	5	8.58	2.99	2.87	0.92	22.5	7.8	1.36	.327	4.45	99	3.63	86	9.24	11.2
18	Ivan Nova I. Nova	4.14	2017	PIT	31	11	14	.440	31	131	2	1	0	187.0	203	86	96	29	36	7	0	2	785	8	6.30	1.73	3.64	1.40	16.7	4.6	1.28	.299	4.62	97	4.45	103	9.77	-2.9
19	Gerrit Cole G. Cole	4.26	2017	PIT	33	12	12	.500	33	196	0	0	0	203.0	199	96	98	31	55	4	0	1	849	7	8.69	2.44	3.56	1.37	23.1	6.5	1.25	.298	4.34	100	4.08	94	8.82	5.4
20	Dan Straily D. Straily	4.26	2017	MIA	33	10	9	.526	33	170	0	0	0	181.2	176	86	90	31	60	5	0	4	769	2	8.42	2.97	2.83	1.54	22.1	7.8	1.30	.288	4.46	103	4.57	109	8.72	-8.2
21	R.A. Dickey	4.26	2017	ATL	31	10	10	.500	31	136	0	0	0	190.0	193	90	99	26	67	10	0	3	815	13	6.44	3.17	2.03	1.23	16.7	8.2	1.37	.290	4.69	96	4.71	110	9.14	-9.5
22	Jon Lester J. Lester	4.33	2017	CHC	32	13	8	.619	32	180	1	0	0	180.2	179	87	101	26	60	4	0	3	763	3	8.97	2.99	3.00	1.30	23.6	7.9	1.32	.310	5.03	100	4.09	95	8.92	4.5
23	Germán Márquez G. Márquez	4.39	2017	COL	29	11	7	.611	29	147	0	0	0	162.0	174	79	82	25	49	8	0	3	701	6	8.17	2.72	3.00	1.39	21.0	7.0	1.38	.316	4.56	88	4.40	96	9.67	3.4
24	Jeff Samardzija J. Samardzija	4.42	2017	SFG	32	9	15	.375	32	205	1	1	0	207.2	204	102	107	30	32	6	0	1	847	2	8.88	1.39	6.41	1.30	24.2	3.8	1.14	.303	4.64	106	3.60	89	8.84	10.6
25	Julio Teheran J. Teheran	4.49	2017	ATL	32	11	13	.458	32	151	0	0	0	188.1	186	94	103	31	72	7	0	3	812	6	7.22	3.44	2.10	1.48	18.6	8.9	1.37	.281	4.92	102	4.94	116	8.89	-14.3