Jacob deGrom had the best ERA in 2018, with an ERA of 1.70.

Interpreted as:

era with a minimum of 1 IP per team game leaders 2018

	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	Jacob deGrom J. deGrom	1.70	2018	NYM	32	10	9	.526	32	269	1	0	0	217.0	152	41	48	10	46	5	0	3	835	2	11.16	1.91	5.85	0.41	32.2	5.5	0.91	.281	1.99	44	1.98	50	6.30	49
2	Blake Snell B. Snell	1.89	2018	TBR	31	21	5	.808	31	221	0	0	0	180.2	112	38	41	16	64	1	0	2	700	13	11.01	3.19	3.45	0.80	31.6	9.1	0.97	.241	2.04	46	2.94	72	5.58	23.1
3	Trevor Bauer T. Bauer	2.21	2018	CLE	28	12	6	.667	27	221	0	0	1	175.1	134	43	51	9	57	9	1	2	717	12	11.34	2.93	3.88	0.46	30.8	7.9	1.09	.297	2.62	50	2.43	57	6.88	35
4	Aaron Nola A. Nola	2.37	2018	PHI	33	17	6	.739	33	224	0	0	0	212.1	149	56	57	17	58	7	0	3	831	4	9.49	2.46	3.86	0.72	27.0	7.0	0.97	.251	2.42	59	3.00	72	6.32	27.2
5	Justin Verlander J. Verlander	2.52	2018	HOU	34	16	9	.640	34	290	1	1	0	214.0	156	60	63	28	37	8	0	0	833	5	12.20	1.56	7.84	1.18	34.8	4.4	0.90	.272	2.65	62	2.78	67	6.56	33
6	Max Scherzer M. Scherzer	2.53	2018	WSH	33	18	7	.720	33	300	2	1	0	220.2	150	62	66	23	51	12	0	4	866	4	12.24	2.08	5.88	0.94	34.6	5.9	0.91	.265	2.69	62	2.65	64	6.12	36.1
7	Miles Mikolas M. Mikolas	2.83	2018	STL	32	18	4	.818	32	146	1	1	0	200.2	186	63	70	16	29	7	0	4	808	2	6.55	1.30	5.03	0.72	18.1	3.6	1.07	.279	3.14	73	3.27	82	8.34	15.9
8	Kyle Freeland K. Freeland	2.85	2018	COL	33	17	7	.708	33	173	0	0	0	202.1	182	64	64	17	70	6	0	2	844	2	7.70	3.11	2.47	0.76	20.5	8.3	1.25	.285	2.85	62	3.66	86	8.10	13.2
9	Mike Foltynewicz M. Foltynewicz	2.85	2018	ATL	31	13	10	.565	31	202	2	1	0	183.0	130	58	65	17	68	6	0	3	744	7	9.93	3.34	2.97	0.84	27.2	9.1	1.08	.251	3.20	69	3.37	84	6.39	13.3
10	Gerrit Cole G. Cole	2.88	2018	HOU	32	15	5	.750	32	276	1	1	0	200.1	143	64	68	19	64	7	0	0	799	9	12.40	2.88	4.31	0.85	34.5	8.0	1.03	.286	3.05	70	2.70	65	6.42	32.7
11	Corey Kluber C. Kluber	2.89	2018	CLE	33	20	7	.741	33	222	2	1	0	215.0	179	69	75	25	34	3	0	0	842	2	9.29	1.42	6.53	1.05	26.4	4.0	0.99	.276	3.14	66	3.12	74	7.49	26.5
12	Mike Clevinger M. Clevinger	3.02	2018	CLE	32	13	8	.619	32	207	1	1	0	200.0	164	67	71	21	67	4	0	0	810	4	9.32	3.02	3.09	0.95	25.6	8.3	1.16	.280	3.20	69	3.52	83	7.38	15.9
13	Trevor Williams T. Williams	3.11	2018	PIT	31	14	10	.583	31	126	1	1	0	170.2	146	59	64	15	55	4	0	3	701	4	6.64	2.90	2.29	0.79	18.0	7.8	1.18	.261	3.38	78	3.86	95	7.70	3.8
14	Charlie Morton C. Morton	3.13	2018	HOU	30	15	3	.833	30	201	0	0	0	167.0	130	58	63	18	64	16	0	0	695	4	10.83	3.45	3.14	0.97	28.9	9.2	1.16	.283	3.40	76	3.59	87	7.01	10.4
15	Patrick Corbin P. Corbin	3.15	2018	ARI	33	11	7	.611	33	246	1	1	0	200.0	162	70	70	15	48	5	0	3	800	8	11.07	2.16	5.13	0.68	30.8	6.0	1.05	.302	3.15	78	2.47	62	7.29	34.2
16	Jameson Taillon J. Taillon	3.20	2018	PIT	32	14	10	.583	32	179	2	1	0	191.0	179	68	69	20	46	6	0	4	785	2	8.43	2.17	3.89	0.94	22.8	5.9	1.18	.298	3.25	80	3.46	85	8.43	12.8
17	Zack Greinke Z. Greinke	3.21	2018	ARI	33	15	11	.577	33	199	0	0	0	207.2	181	74	77	28	43	6	0	3	839	4	8.62	1.86	4.63	1.21	23.7	5.1	1.08	.272	3.34	79	3.70	93	7.84	6.4
18	Zack Wheeler Z. Wheeler	3.31	2018	NYM	29	12	7	.632	29	179	0	0	0	182.1	150	67	69	14	55	9	0	0	744	2	8.84	2.71	3.25	0.69	24.1	7.4	1.12	.279	3.41	87	3.24	81	7.40	15.1
19	Jon Lester J. Lester	3.32	2018	CHC	32	18	6	.750	32	149	0	0	0	181.2	174	67	75	24	64	6	0	1	761	4	7.38	3.17	2.33	1.19	19.6	8.4	1.31	.290	3.72	83	4.39	109	8.62	-7.6
20	Carlos Carrasco C. Carrasco	3.38	2018	CLE	32	17	10	.630	30	231	2	0	0	192.0	173	72	78	21	43	6	1	4	784	9	10.83	2.02	5.37	0.98	29.5	5.5	1.13	.315	3.66	77	2.94	69	8.11	27.6
21	Luis Severino L. Severino	3.39	2018	NYY	32	19	8	.704	32	220	1	1	0	191.1	173	72	76	19	46	5	0	0	780	8	10.35	2.16	4.78	0.89	28.2	5.9	1.14	.314	3.57	79	2.95	68	8.14	28.6
22	Kyle Hendricks K. Hendricks	3.44	2018	CHC	33	14	11	.560	33	161	0	0	0	199.0	184	76	82	22	44	9	0	4	812	0	7.28	1.99	3.66	0.99	19.8	5.4	1.15	.281	3.71	86	3.77	94	8.32	5.4
23	Jhoulys Chacin J. Chacin	3.50	2018	MIL	35	15	8	.652	35	156	0	0	0	192.2	153	75	83	18	71	11	0	3	796	5	7.29	3.32	2.20	0.84	19.6	8.9	1.16	.250	3.88	87	4.03	99	7.15	0.7
24	Mike Fiers M. Fiers	3.56	2018	TOT	31	12	8	.600	30	139	0	0	0	172.0	166	68	71	32	37	8	0	1	714	4	7.27	1.94	3.76	1.67	19.5	5.2	1.18	.269	3.72	83	4.74	112	8.69	-9.5
25	Derek Holland D. Holland	3.57	2018	SFG	36	7	9	.438	30	169	0	0	0	171.1	154	68	74	19	67	4	1	6	727	2	8.88	3.52	2.52	1.00	23.2	9.2	1.29	.288	3.89	92	3.87	100	8.09	-0.5