worst season era by an mlb player with at least 0.1 innings pitched and an era below 21.1

16 pitchers are tied for the highest ERA with 0.1+ innings pitched with an ERA better than 21.10 in a season, with an ERA of 21.00. The first three are Jhonny Pereda and Miguel Rojas this season and Daniel Castano in 2023.

	NAME	ERA	IP	SEASON	TM	G	W	L	W%	GS	SO	CG	SHO	SV	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	Jhonny Pereda J. Pereda	21.00	3.0	2025	ATH	3	0	0		0	3	0	0	0	9	7	7	1	2	0	3	0	20	0	9.00	6.00	1.50	3.00	15.0	10.0	3.67	.571	21.00	537	7.39	183	27.00	-1.1
2	Miguel Rojas M. Rojas	21.00	3.0	2025	LAD	2	0	0		0	0	0	0	0	9	7	7	3	0	1	2	0	19	0	0.00	0.00		9.00	0.0	0.0	3.00	.400	21.00	526	17.06	424	27.00	-4.3
3	Daniel Castano D. Castano	21.00	3.0	2023	MIA	2	0	0		0	4	0	0	0	7	7	8	2	3	0	1	0	20	0	12.00	9.00	1.33	6.00	20.0	15.0	3.33	.455	24.00	470	12.25	280	21.00	-2.6
4	Tom Gorzelanny T. Gorzelanny	21.00	3.0	2016	CLE	7	1	0	1.000	0	4	0	0	0	4	7	7	1	5	0	1	1	18	0	12.00	15.00	0.80	3.00	22.2	27.8	3.00	.375	21.00	481	9.80	229	12.00	-1.8
5	Joe Horgan J. Horgan	21.00	6.0	2005	WSH	8	0	0		0	5	0	0	0	19	14	15	0	4	1	1	0	44	1	7.50	6.00	1.25	0.00	11.4	9.1	3.83	.559	22.50	518	3.84	93	28.50	0.2
6	Christian Parker C. Parker	21.00	3.0	2001	NYY	1	0	1	.000	1	1	0	0	0	8	7	7	2	1	0	0	0	18	0	3.00	3.00	1.00	6.00	5.6	5.6	3.00	.429	21.00	479	12.04	272	24.00	-2.5
7	Buddy Carlyle B. Carlyle	21.00	3.0	2000	SDP	4	0	0		0	2	0	0	0	6	7	7	0	3	0	2	0	18	0	6.00	9.00	0.67	0.00	11.1	16.7	3.00	.462	21.00	488	4.79	106	18.00	-0.1
8	Danny Young D. Young	21.00	3.0	2000	CHC	4	0	1	.000	0	0	0	0	0	5	7	7	1	6	0	2	0	20	0	0.00	18.00	0.00	3.00	0.0	30.0	3.67	.308	21.00	463	13.46	286	15.00	-2.9
9	Woodie Fryman W. Fryman	21.00	3.0	1983	MON	6	0	3	.000	0	1	0	0	0	8	7	7	1	1	0	1	0	16	0	3.00	3.00	1.00	3.00	6.3	6.3	3.00	.538	21.00	591	7.41	200	24.00	-1.2
10	Warren Hacker W. Hacker	21.00	3.0	1948	CHC	3	0	1	.000	1	0	0	0	0	7	7	7	0	3	0	1		19	0	0.00	9.00	0.00	0.00	0.0	15.8	3.33	.438	21.00	542	5.66	143	21.00	-0.6
11	Max Macon M. Macon	21.00	3.0	1944	BSN	1	0	0		0	1	0	0	0	10	7	7	2	1	0	0		20	0	3.00	3.00	1.00	6.00	5.0	5.0	3.67	.500	21.00	576	11.54	316	30.00	-2.6
12	Jim Lindsey J. Lindsey	21.00	3.0	1924	CLE	3	0	0		0	0	0	0	0	8	7	7	0	3	0	1		21	0	0.00	9.00	0.00	0.00	0.0	14.3	3.67	.444	21.00	492	6.04	144	24.00	-0.6
13	Squire Potter S. Potter	21.00	3.0	1923	WSH	1	0	0		0	1	0	0	0	11	7	9	0	4	0	1		20	0	3.00	12.00	0.25	0.00	5.0	20.0	5.00	.733	27.00	555	6.27	164	33.00	-0.9
14	Rube Marshall R. Marshall	21.00	3.0	1912	PHN	2	0	1	.000	1	2	0	0	0	12	7	11	0	1	0	1		23	0	6.00	3.00	2.00	0.00	8.7	4.3	4.33	.600	33.00	600	2.52	70	36.00	0.4
15	Walt Woods W. Woods	21.00	3.0	1900	PIT	1	0	0		0	1	0	0	0	9	7	7	0	1	0	0		19	0	3.00	3.00	1.00	0.00	5.3	5.3	3.33	.529	21.00	574	3.16	86	27.00	0.2
16	John Sowders J. Sowders	21.00	3.0	1887	IND	1	0	0		0	0	0	0	0	11	7	13	0	5	0	1		27	4	0.00	15.00	0.00	0.00	0.0	18.5	5.33	.500	39.00	519	8.28	196	33.00	-1.3
17	Jerad Eickhoff J. Eickhoff	20.77	4.1	2022	PIT	1	0	1	.000	1	4	0	0	0	10	10	10	2	1	3	0	0	27	0	8.31	2.08	4.00	4.15	14.8	3.7	2.54	.471	20.77	508	10.03	252	20.77	-2.9
18	Joe Biagini J. Biagini	20.77	4.1	2020	HOU	4	0	0		0	4	0	0	0	10	10	10	1	4	0	0	0	27	1	8.31	8.31	1.00	2.08	14.8	14.8	3.23	.500	20.77	474	7.11	162	20.77	-1.3
19	Wade Davis W. Davis	20.77	4.1	2020	COL	5	0	1	.000	0	3	0	0	2	9	10	10	3	3	0	2	1	25	2	6.23	6.23	1.00	6.23	12.0	12.0	2.77	.375	20.77	408	12.87	273	18.69	-3.7
20	Cory Mazzoni C. Mazzoni	20.77	8.2	2015	SDP	8	0	0		0	8	0	0	0	23	20	22	2	5	0	4	0	53	0	8.31	5.19	1.60	2.08	15.1	9.4	3.23	.553	22.85	560	6.01	158	23.88	-2.2
21	Brayan Villarreal B. Villarreal	20.77	4.1	2013	TOT	8	0	2	.000	0	6	0	0	0	8	10	10	1	9	0	4	0	29	1	12.46	18.69	0.67	2.08	20.7	31.0	3.92	.538	20.77	516	8.81	222	16.62	-2.3
22	Antonio Osuna A. Osuna	20.77	4.1	2001	CWS	4	0	0		0	6	0	0	0	8	10	10	3	2	1	0	1	23	0	12.46	4.15	3.00	6.23	26.1	8.7	2.31	.455	20.77	460	11.35	249	16.62	-3.2
23	David Nied D. Nied	20.77	4.1	1995	COL	2	0	0		0	3	0	0	0	11	10	10	2	3	0	0	0	27	0	6.23	6.23	1.00	4.15	11.1	11.1	3.23	.474	20.77	404	9.79	209	22.85	-2.2
24	Clarence Winters C. Winters	20.57	7.0	1924	BSA	4	0	1	.000	2	3	0	0	0	22	16	16	0	4	0	1		48	0	3.86	5.14	0.75	0.00	6.3	8.3	3.71	.537	20.57	482	3.90	93	28.29	0.2
25	Connor Thomas C. Thomas	20.25	5.1	2025	MIL	2	0	0		0	5	0	0	0	12	12	12	3	2	1	0	0	31	0	8.44	3.38	2.50	5.06	16.1	6.5	2.63	.450	20.25	497	10.18	255	20.25	-3.6