Matthew Boyd had the highest ERA in 2020, with an ERA of 6.71.

Interpreted as:

worst era with a minimum of 1 IP per team game pitcher in MLB in 2020

	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	Matthew Boyd M. Boyd	6.71	2020	DET	12	3	7	.300	12	60	1	0	0	60.1	67	45	46	15	22	5	0	0	271	5	8.95	3.28	2.73	2.24	22.1	8.1	1.48	.308	6.86	153	5.77	131	9.99	-9.3
2	Johnny Cueto J. Cueto	5.40	2020	SFG	12	2	3	.400	12	56	0	0	0	63.1	61	38	41	9	26	3	0	0	277	1	7.96	3.69	2.15	1.28	20.2	9.4	1.37	.284	5.83	123	4.63	109	8.67	-2.8
3	Kyle Gibson K. Gibson	5.35	2020	TEX	12	2	6	.250	12	58	1	1	0	67.1	73	40	44	12	30	6	0	1	301	1	7.75	4.01	1.93	1.60	19.3	10.0	1.53	.313	5.88	119	5.38	118	9.76	-5.8
4	Jon Lester J. Lester	5.16	2020	CHC	12	3	3	.500	12	42	0	0	0	61.0	64	35	35	11	17	3	0	0	265	2	6.20	2.51	2.47	1.62	15.8	6.4	1.33	.276	5.16	117	5.13	117	9.44	-5
5	Aaron Civale A. Civale	4.74	2020	CLE	12	4	6	.400	12	69	1	0	0	74.0	82	39	39	11	16	3	0	0	312	0	8.39	1.95	4.31	1.34	22.1	5.1	1.32	.333	4.74	107	4.02	91	9.97	3.5
6	Patrick Corbin P. Corbin	4.66	2020	WSH	11	2	7	.222	11	60	0	0	0	65.2	85	34	35	10	18	0	0	1	295	1	8.22	2.47	3.33	1.37	20.3	6.1	1.57	.362	4.80	103	4.16	92	11.65	2.8
7	Martín Pérez M. Pérez	4.50	2020	BOS	12	3	5	.375	12	46	0	0	0	62.0	55	31	33	8	28	3	0	0	262	2	6.68	4.06	1.64	1.16	17.6	10.7	1.34	.266	4.79	96	4.88	110	7.98	-3
8	Alec Mills A. Mills	4.48	2020	CHC	11	5	5	.500	11	46	1	1	0	62.1	53	31	31	13	19	2	0	0	252	0	6.64	2.74	2.42	1.88	18.3	7.5	1.16	.233	4.48	101	5.43	123	7.65	-7.2
9	Andrew Heaney A. Heaney	4.45	2020	LAA	12	4	3	.571	12	70	0	0	0	66.2	63	33	35	9	19	2	0	1	279	2	9.45	2.57	3.68	1.21	25.1	6.8	1.23	.302	4.72	99	3.78	83	8.51	5.8
10	Kyle Freeland K. Freeland	4.33	2020	COL	13	2	3	.400	13	46	0	0	0	70.2	77	34	34	9	23	3	0	0	304	0	5.86	2.93	2.00	1.15	15.1	7.6	1.42	.305	4.33	85	4.64	98	9.81	0.7
11	Brady Singer B. Singer	4.06	2020	KCR	12	4	5	.444	12	61	0	0	0	64.1	52	29	29	8	23	2	0	0	263	5	8.53	3.22	2.65	1.12	23.2	8.7	1.17	.260	4.06	89	4.07	93	7.27	2.3
12	Zack Greinke Z. Greinke	4.03	2020	HOU	12	3	3	.500	12	67	0	0	0	67.0	67	30	30	6	9	1	0	0	273	3	9.00	1.21	7.44	0.81	24.5	3.3	1.13	.321	4.03	92	2.79	64	9.00	12
13	José Berríos J. Berríos	4.00	2020	MIN	12	5	4	.556	12	68	0	0	0	63.0	57	28	28	8	26	3	0	0	271	5	9.71	3.71	2.62	1.14	25.1	9.6	1.32	.295	4.00	91	4.06	92	8.14	2.4
14	Germán Márquez G. Márquez	3.75	2020	COL	13	4	6	.400	13	73	0	0	0	81.2	78	34	41	6	25	0	0	0	344	4	8.04	2.76	2.92	0.66	21.2	7.3	1.26	.300	4.52	74	3.27	69	8.60	12.6
15	Max Scherzer M. Scherzer	3.74	2020	WSH	12	5	4	.556	12	92	1	0	0	67.1	70	28	30	10	23	1	0	1	295	6	12.30	3.07	4.00	1.34	31.2	7.8	1.38	.355	4.01	83	3.45	76	9.36	8
16	Framber Valdez F. Valdez	3.57	2020	HOU	11	5	3	.625	10	76	0	0	0	70.2	63	28	32	5	16	5	0	0	288	6	9.68	2.04	4.75	0.64	26.4	5.6	1.12	.312	4.08	81	2.84	65	8.02	12.3
17	Lucas Giolito L. Giolito	3.48	2020	CWS	12	4	3	.571	12	97	1	1	0	72.1	47	28	31	8	28	2	0	0	288	3	12.07	3.48	3.46	1.00	33.7	9.7	1.04	.255	3.86	78	3.18	69	5.85	11.2
18	Antonio Senzatela A. Senzatela	3.44	2020	COL	12	5	3	.625	12	41	1	0	0	73.1	71	28	29	9	18	4	0	0	303	0	5.03	2.21	2.28	1.10	13.5	5.9	1.21	.268	3.56	68	4.56	97	8.71	1.4
19	Lance Lynn L. Lynn	3.32	2020	TEX	13	6	3	.667	13	89	1	0	0	84.0	64	31	34	13	25	6	0	0	344	2	9.54	2.68	3.56	1.39	25.9	7.3	1.06	.242	3.64	74	4.18	91	6.86	3.7
20	Dylan Bundy D. Bundy	3.29	2020	LAA	11	6	3	.667	11	72	1	0	0	65.2	51	24	27	5	17	4	0	1	267	2	9.87	2.33	4.24	0.69	27.0	6.4	1.04	.272	3.70	73	2.94	64	6.99	11.7
21	Aaron Nola A. Nola	3.28	2020	PHI	12	5	5	.500	12	96	2	1	0	71.1	54	26	31	9	23	2	0	2	289	1	12.11	2.90	4.17	1.14	33.2	8.0	1.08	.283	3.91	73	3.18	70	6.81	10.6
22	Luis Castillo L. Castillo	3.21	2020	CIN	12	4	6	.400	12	89	1	0	0	70.0	62	25	31	5	24	1	0	0	292	1	11.44	3.09	3.71	0.64	30.5	8.2	1.23	.329	3.99	68	2.64	57	7.97	15.2
23	Adam Wainwright A. Wainwright	3.15	2020	STL	10	5	3	.625	10	54	2	0	0	65.2	54	23	25	9	15	2	0	0	262	0	7.40	2.06	3.60	1.23	20.6	5.7	1.05	.247	3.43	74	4.10	95	7.40	1.5
24	Marco Gonzales M. Gonzales	3.10	2020	SEA	11	7	2	.778	11	64	1	0	0	69.2	59	24	27	8	7	4	0	0	277	0	8.27	0.90	9.14	1.03	23.1	2.5	0.95	.263	3.49	74	3.31	77	7.62	7.9
25	Brandon Woodruff B. Woodruff	3.05	2020	MIL	13	3	5	.375	13	91	1	0	0	73.2	55	25	26	9	18	4	0	0	293	1	11.12	2.20	5.06	1.10	31.1	6.1	0.99	.269	3.18	68	3.20	72	6.72	10.2