Hyun Jin Ryu had the best ERA in 2019, with an ERA of 2.32.

Interpreted as:

MLB era with a minimum of 1 IP per team game leader 2019

	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	Hyun Jin Ryu H. Jin Ryu	2.32	2019	LAD	29	14	5	.737	29	163	1	1	0	182.2	160	47	53	17	24	4	0	2	723	0	8.03	1.18	6.79	0.84	22.5	3.3	1.01	.278	2.61	54	3.09	70	7.88	27.1
2	Jacob deGrom J. deGrom	2.43	2019	NYM	32	11	8	.579	32	255	0	0	0	204.0	154	55	59	19	44	7	0	1	804	2	11.25	1.94	5.80	0.84	31.7	5.5	0.97	.282	2.60	60	2.66	62	6.79	37.8
3	Gerrit Cole G. Cole	2.50	2019	HOU	33	20	5	.800	33	326	0	0	0	212.1	142	59	66	29	48	3	0	0	817	4	13.82	2.03	6.79	1.23	39.9	5.9	0.89	.275	2.80	55	2.63	58	6.02	45
4	Justin Verlander J. Verlander	2.58	2019	HOU	34	21	6	.778	34	300	2	1	0	223.0	137	64	66	36	42	6	0	0	847	4	12.11	1.70	7.14	1.45	35.4	5.0	0.80	.218	2.66	57	3.26	72	5.53	31.5
5	Michael Soroka M. Soroka	2.68	2019	ATL	29	13	4	.765	29	142	0	0	0	174.2	153	52	56	14	41	7	0	1	701	3	7.32	2.11	3.46	0.72	20.3	5.8	1.11	.280	2.89	60	3.44	79	7.88	18.3
6	Jack Flaherty J. Flaherty	2.75	2019	STL	33	11	8	.579	33	231	0	0	0	196.1	135	60	62	25	55	7	0	2	772	6	10.59	2.52	4.20	1.15	29.9	7.1	0.97	.242	2.84	66	3.45	80	6.19	18.6
7	Sonny Gray S. Gray	2.87	2019	CIN	31	11	8	.579	31	205	0	0	0	175.1	122	56	59	17	68	7	0	1	708	7	10.52	3.49	3.01	0.87	29.0	9.6	1.08	.255	3.03	62	3.41	74	6.26	22.6
8	Max Scherzer M. Scherzer	2.92	2019	WSH	27	11	7	.611	27	243	0	0	0	172.1	144	56	59	18	33	7	0	2	693	0	12.69	1.72	7.36	0.94	35.1	4.8	1.03	.321	3.08	66	2.44	55	7.52	38.6
9	Zack Greinke Z. Greinke	2.93	2019	TOT	33	18	5	.783	33	187	0	0	0	208.2	175	68	73	21	30	4	0	2	810	2	8.07	1.29	6.23	0.91	23.1	3.7	0.98	.271	3.15	66	3.21	73	7.55	27.7
10	Clayton Kershaw C. Kershaw	3.03	2019	LAD	29	16	5	.762	28	189	0	0	0	178.1	145	60	63	28	41	2	0	0	706	7	9.54	2.07	4.61	1.41	26.8	5.8	1.04	.262	3.18	71	3.85	87	7.32	11.4
11	Charlie Morton C. Morton	3.05	2019	TBR	33	16	6	.727	33	240	0	0	0	194.2	154	66	71	15	57	12	0	0	790	5	11.10	2.64	4.21	0.69	30.4	7.2	1.08	.298	3.28	70	2.80	64	7.12	35.3
12	Marcus Stroman M. Stroman	3.22	2019	TOT	32	10	13	.435	32	159	0	0	0	184.1	183	66	77	18	58	1	0	1	774	7	7.76	2.83	2.74	0.88	20.5	7.5	1.31	.307	3.76	74	3.71	83	8.93	16.2
13	Patrick Corbin P. Corbin	3.25	2019	WSH	33	14	7	.667	33	238	1	1	0	202.0	169	73	81	24	70	3	0	2	835	4	10.60	3.12	3.40	1.07	28.5	8.4	1.18	.290	3.61	73	3.48	78	7.53	22.2
14	Walker Buehler W. Buehler	3.26	2019	LAD	30	14	4	.778	30	215	2	0	0	182.1	153	66	77	20	37	7	0	0	737	4	10.61	1.83	5.81	0.99	29.2	5.0	1.04	.290	3.80	77	2.99	68	7.55	29
15	Shane Bieber S. Bieber	3.28	2019	CLE	34	15	8	.652	33	259	3	2	0	214.1	186	78	86	31	40	6	1	1	859	6	10.88	1.68	6.48	1.30	30.2	4.7	1.05	.296	3.61	71	3.31	73	7.81	29
16	Stephen Strasburg S. Strasburg	3.32	2019	WSH	33	18	6	.750	33	251	0	0	0	209.0	161	77	79	24	56	10	0	4	841	8	10.81	2.41	4.48	1.03	29.8	6.7	1.04	.274	3.40	75	3.24	73	6.93	28.3
17	Dakota Hudson D. Hudson	3.35	2019	STL	33	16	7	.696	32	136	0	0	1	174.2	160	65	80	22	86	9	1	8	757	5	7.01	4.43	1.58	1.13	18.0	11.4	1.41	.274	4.12	80	4.91	115	8.24	-12.7
18	Luis Castillo L. Castillo	3.40	2019	CIN	32	15	8	.652	32	226	0	0	0	190.2	139	72	76	22	79	7	0	0	781	5	10.67	3.73	2.86	1.04	28.9	10.1	1.14	.262	3.59	74	3.69	80	6.56	19
19	Lucas Giolito L. Giolito	3.41	2019	CWS	29	14	9	.609	29	228	3	2	0	176.2	131	67	69	24	57	4	0	1	705	6	11.62	2.90	4.00	1.22	32.3	8.1	1.06	.273	3.52	75	3.42	73	6.67	24.6
20	Kyle Hendricks K. Hendricks	3.46	2019	CHC	30	11	10	.524	30	150	1	1	0	177.0	168	68	78	19	32	9	0	1	730	1	7.63	1.63	4.69	0.97	20.5	4.4	1.13	.287	3.97	78	3.60	81	8.54	16.2
21	Jeff Samardzija J. Samardzija	3.52	2019	SFG	32	11	12	.478	32	140	0	0	0	181.1	152	71	78	28	49	6	0	4	740	5	6.95	2.43	2.86	1.39	18.9	6.6	1.11	.240	3.87	84	4.58	109	7.54	-8.3
22	Mike Minor M. Minor	3.59	2019	TEX	32	14	10	.583	32	200	2	1	0	208.1	190	83	86	30	68	7	0	1	863	2	8.64	2.94	2.94	1.30	23.2	7.9	1.24	.287	3.72	71	4.23	89	8.21	11.7
23	Lance Lynn L. Lynn	3.67	2019	TEX	33	16	11	.593	33	246	0	0	0	208.1	195	85	89	21	59	8	0	0	875	18	10.63	2.55	4.17	0.91	28.1	6.7	1.22	.322	3.84	73	3.12	66	8.42	36.6
24	José Berríos J. Berríos	3.68	2019	MIN	32	14	8	.636	32	195	1	0	0	200.1	194	82	94	26	51	9	0	0	842	8	8.76	2.29	3.82	1.17	23.2	6.1	1.22	.299	4.22	80	3.84	84	8.72	16.1
25	Eduardo Rodriguez E. Rodriguez	3.81	2019	BOS	34	19	6	.760	34	213	0	0	0	203.1	195	86	88	24	75	7	0	2	859	3	9.43	3.32	2.84	1.06	24.8	8.7	1.33	.317	3.90	79	3.85	85	8.63	15.1