Zack Greinke had the lowest ERA in the NL in 2015, with an ERA of 1.66.

Interpreted as:

Who had the best era with a minimum of 1 IP per team game in the nl in 2015?

	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	Zack Greinke Z. Greinke	1.66	2015	LAD	32	19	3	.864	32	200	1	0	0	222.2	148	41	43	14	40	5	0	1	843	7	8.08	1.62	5.00	0.57	23.7	4.7	0.84	.229	1.74	44	2.75	73	5.98	26.2
2	Jake Arrieta J. Arrieta	1.77	2015	CHC	33	22	6	.786	33	236	4	3	0	229.0	150	45	52	10	48	6	0	2	870	6	9.28	1.89	4.92	0.39	27.1	5.5	0.86	.246	2.04	45	2.34	60	5.90	39
3	Clayton Kershaw C. Kershaw	2.13	2015	LAD	33	16	7	.696	33	301	4	3	0	232.2	163	55	62	15	42	5	0	1	890	9	11.64	1.62	7.17	0.58	33.8	4.7	0.88	.281	2.40	57	1.98	52	6.31	47.7
4	Jacob deGrom J. deGrom	2.54	2015	NYM	30	14	8	.636	30	205	0	0	0	191.0	149	54	59	16	38	2	0	2	751	6	9.66	1.79	5.39	0.75	27.3	5.1	0.98	.271	2.78	69	2.70	70	7.02	25
5	Gerrit Cole G. Cole	2.60	2015	PIT	32	19	8	.704	32	202	0	0	0	208.0	183	60	71	11	44	10	0	1	832	7	8.74	1.90	4.59	0.48	24.3	5.3	1.09	.304	3.07	68	2.65	70	7.92	26.9
6	Matt Harvey M. Harvey	2.71	2015	NYM	29	13	8	.619	29	188	0	0	0	189.1	156	57	62	18	37	5	0	2	755	4	8.94	1.76	5.08	0.86	24.9	4.9	1.02	.272	2.95	73	3.04	79	7.42	17.5
7	John Lackey J. Lackey	2.77	2015	STL	33	13	10	.565	33	175	1	0	0	218.0	211	67	71	21	53	4	0	5	896	5	7.22	2.19	3.30	0.87	19.5	5.9	1.21	.295	2.93	73	3.56	93	8.71	6.7
8	Max Scherzer M. Scherzer	2.79	2015	WSH	33	14	12	.538	33	276	4	3	0	228.2	176	71	74	27	34	5	0	2	899	10	10.86	1.34	8.12	1.06	30.7	3.8	0.92	.268	2.91	71	2.76	72	6.93	27.6
9	Madison Bumgarner M. Bumgarner	2.93	2015	SFG	32	18	9	.667	32	234	4	2	0	218.1	181	71	73	21	39	7	0	2	869	1	9.65	1.61	6.00	0.87	26.9	4.5	1.01	.282	3.01	78	2.87	78	7.46	20.4
10	Carlos Martinez C. Martinez	3.01	2015	STL	31	14	7	.667	29	184	0	0	0	179.2	168	60	65	13	63	8	1	5	755	8	9.22	3.16	2.92	0.65	24.4	8.3	1.29	.318	3.26	79	3.20	84	8.42	12.7
11	Shelby Miller S. Miller	3.02	2015	ATL	33	6	17	.261	33	171	2	2	0	205.1	183	69	82	13	73	6	0	8	860	5	7.50	3.20	2.34	0.57	19.9	8.5	1.25	.285	3.59	78	3.44	91	8.02	7.3
12	Lance Lynn L. Lynn	3.03	2015	STL	31	12	11	.522	31	167	0	0	0	175.1	172	59	66	13	68	5	0	5	751	2	8.57	3.49	2.46	0.67	22.2	9.1	1.37	.319	3.39	80	3.43	90	8.83	7.8
13	A.J. Burnett	3.18	2015	PIT	26	9	7	.563	26	143	0	0	0	164.0	174	58	64	11	49	11	0	2	699	6	7.85	2.69	2.92	0.60	20.5	7.0	1.36	.336	3.51	83	3.35	88	9.55	8.2
14	Tyson Ross T. Ross	3.26	2015	SDP	33	10	12	.455	33	212	1	0	0	196.0	172	71	78	9	84	8	0	3	823	14	9.73	3.86	2.52	0.41	25.8	10.2	1.31	.320	3.58	88	2.97	78	7.90	18.3
15	Jon Lester J. Lester	3.34	2015	CHC	32	11	12	.478	32	207	1	0	0	205.0	183	76	83	16	47	7	0	0	828	8	9.09	2.06	4.40	0.70	25.0	5.7	1.12	.303	3.64	85	2.91	75	8.03	21.9
16	Francisco Liriano F. Liriano	3.38	2015	PIT	31	12	7	.632	31	205	0	0	0	186.2	155	70	75	15	70	5	0	1	773	10	9.88	3.38	2.93	0.72	26.5	9.1	1.21	.293	3.62	88	3.18	84	7.47	12.9
17	Michael Wacha M. Wacha	3.38	2015	STL	30	17	7	.708	30	153	0	0	0	181.1	162	68	74	19	58	6	0	4	762	4	7.59	2.88	2.64	0.94	20.1	7.6	1.21	.272	3.67	89	3.86	101	8.04	-0.6
18	Dan Haren D. Haren	3.60	2015	TOT	32	11	9	.550	32	132	0	0	0	187.1	174	75	79	31	38	8	0	2	768	5	6.34	1.83	3.47	1.49	17.2	4.9	1.13	.256	3.80	94	4.61	121	8.36	-17.4
19	Jordan Zimmermann J. Zimmermann	3.66	2015	WSH	33	13	10	.565	33	164	0	0	0	201.2	204	82	89	24	39	8	0	3	831	2	7.32	1.74	4.21	1.07	19.7	4.7	1.20	.302	3.97	93	3.75	98	9.10	2
20	Brett Anderson B. Anderson	3.69	2015	LAD	31	10	9	.526	31	116	1	0	0	180.1	194	74	82	18	46	2	0	2	750	4	5.79	2.30	2.52	0.90	15.5	6.1	1.33	.310	4.09	99	3.94	104	9.68	-3
21	Mike Leake M. Leake	3.70	2015	TOT	30	11	10	.524	30	119	2	1	0	192.0	174	79	80	22	49	3	0	5	778	6	5.58	2.30	2.43	1.03	15.3	6.3	1.16	.260	3.75	95	4.19	109	8.16	-7.1
22	Jason Hammel J. Hammel	3.74	2015	CHC	31	10	7	.588	31	172	0	0	0	170.2	158	71	79	23	40	6	0	4	710	10	9.07	2.11	4.30	1.21	24.2	5.6	1.16	.288	4.17	96	3.67	95	8.33	3.9
23	Gio Gonzalez G. Gonzalez	3.79	2015	WSH	31	11	8	.579	31	169	0	0	0	175.2	181	74	79	8	69	4	0	3	758	4	8.66	3.54	2.45	0.41	22.3	9.1	1.42	.341	4.05	96	3.04	79	9.27	15.6
24	Alex Wood A. Wood	3.84	2015	TOT	32	12	12	.500	32	139	0	0	0	189.2	198	81	86	15	59	4	0	4	801	6	6.60	2.80	2.36	0.71	17.4	7.4	1.36	.313	4.08	101	3.69	98	9.40	1.7
25	James Shields J. Shields	3.91	2015	SDP	33	13	7	.650	33	216	0	0	0	202.1	189	88	93	33	81	9	0	5	860	7	9.61	3.60	2.67	1.47	25.1	9.4	1.33	.299	4.14	106	4.45	117	8.41	-15