starting pitchers with the highest era with at least 20 games started this season

I don't have anything for this season, but Jordan Montgomery had the worst ERA by a starting pitcher with 20+ starts in 2024, with an ERA of 6.40.

	NAME	ERA	GS	SEASON	TM	G	W	L	W%	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	H/9
1	Jordan Montgomery J. Montgomery	6.40	21	2024	ARI	21	8	7	.533	77	0	0	0	104.0	135	74	76	13	40	1	0	2	475	6	6.66	3.46	1.93	1.13	16.2	8.4	1.68	.355	6.58	11.68
2	Kyle Hendricks K. Hendricks	6.27	24	2024	CHC	24	4	12	.250	81	0	0	0	116.1	135	81	83	20	39	3	0	0	511	0	6.27	3.02	2.08	1.55	15.9	7.6	1.50	.313	6.42	10.44
3	Logan Allen L. Allen	5.73	20	2024	CLE	20	8	5	.615	79	0	0	0	97.1	113	62	63	22	41	4	0	0	432	4	7.30	3.79	1.93	2.03	18.3	9.5	1.58	.318	5.83	10.45
4	Carlos Carrasco C. Carrasco	5.64	21	2024	CLE	21	3	10	.231	89	0	0	0	103.2	112	65	68	19	33	5	0	0	447	5	7.73	2.86	2.70	1.65	19.9	7.4	1.40	.309	5.90	9.72
5	Patrick Corbin P. Corbin	5.62	32	2024	WSH	32	6	13	.316	139	0	0	0	174.2	208	109	114	25	54	3	0	1	764	3	7.16	2.78	2.57	1.29	18.2	7.1	1.50	.337	5.87	10.72
6	Griffin Canning G. Canning	5.38	31	2024	LAA	31	6	13	.316	124	0	0	0	165.2	172	99	105	31	66	6	0	1	719	6	6.74	3.59	1.88	1.68	17.2	9.2	1.44	.287	5.70	9.34
7	Miles Mikolas M. Mikolas	5.35	32	2024	STL	32	10	11	.476	122	0	0	0	171.2	194	102	106	26	25	5	0	0	720	0	6.40	1.31	4.88	1.36	16.9	3.5	1.28	.310	5.56	10.17
8	Kyle Freeland K. Freeland	5.24	21	2024	COL	21	5	8	.385	85	0	0	0	113.1	134	66	73	22	26	1	0	0	490	1	6.75	2.06	3.27	1.75	17.3	5.3	1.41	.315	5.80	10.64
9	Chris Flexen C. Flexen	5.13	30	2024	CWS	30	3	14	.176	115	0	0	0	147.1	169	84	91	23	60	2	0	1	657	4	7.02	3.67	1.92	1.40	17.5	9.1	1.55	.319	5.56	10.32
10	Joey Estes J. Estes	5.11	24	2024	OAK	24	7	9	.438	92	1	1	0	125.0	128	71	73	23	25	10	0	1	531	2	6.62	1.80	3.68	1.66	17.3	4.7	1.22	.276	5.26	9.22
11	Cal Quantrill C. Quantrill	4.98	29	2024	COL	29	8	11	.421	110	0	0	0	148.1	156	82	83	23	69	11	0	0	656	6	6.67	4.19	1.59	1.40	16.8	10.5	1.52	.300	5.04	9.47
12	Edward Cabrera E. Cabrera	4.95	20	2024	MIA	20	4	8	.333	107	0	0	0	96.1	82	53	60	15	50	5	0	0	418	1	10.00	4.67	2.14	1.40	25.6	12.0	1.37	.278	5.61	7.66
13	Trevor Rogers T. Rogers	4.92	25	2024	TOT	25	2	11	.154	97	0	0	0	124.1	140	68	74	14	56	4	0	2	562	1	7.02	4.05	1.73	1.01	17.3	10.0	1.58	.322	5.36	10.13
14	Randy Vásquez R. Vásquez	4.87	20	2024	SDP	20	4	7	.364	62	0	0	0	98.0	119	53	56	13	29	6	0	1	431	5	5.69	2.66	2.14	1.19	14.4	6.7	1.51	.330	5.14	10.93
15	Frankie Montas Jr. F. Montas Jr.	4.84	30	2024	TOT	30	7	11	.389	148	0	0	0	150.2	140	81	89	24	66	6	0	0	655	3	8.84	3.94	2.24	1.43	22.6	10.1	1.37	.282	5.32	8.36
16	Matt Waldron M. Waldron	4.79	26	2024	SDP	26	7	11	.389	130	0	0	0	142.2	137	76	79	19	40	9	0	0	603	3	8.20	2.52	3.25	1.20	21.6	6.6	1.24	.291	4.98	8.64
17	Nick Lodolo N. Lodolo	4.76	21	2024	CIN	21	9	6	.600	122	0	0	0	115.1	101	61	62	13	37	18	0	0	493	1	9.52	2.89	3.30	1.01	24.7	7.5	1.20	.290	4.84	7.88
18	Austin Gomber A. Gomber	4.75	30	2024	COL	30	5	12	.294	116	0	0	0	165.0	178	87	89	30	38	1	0	0	696	3	6.33	2.07	3.05	1.64	16.7	5.5	1.31	.290	4.85	9.71
19	Brandon Pfaadt B. Pfaadt	4.71	32	2024	ARI	32	11	10	.524	185	0	0	0	181.2	183	95	103	24	42	4	0	1	760	1	9.17	2.08	4.40	1.19	24.3	5.5	1.24	.315	5.10	9.07
20	Mitch Spence M. Spence	4.64	24	2024	OAK	24	5	9	.357	104	0	0	0	126.0	144	65	66	18	37	5	0	0	552	8	7.43	2.64	2.81	1.29	18.8	6.7	1.44	.325	4.71	10.29
21	Colin Rea C. Rea	4.61	27	2024	MIL	27	10	6	.625	121	0	0	0	148.1	152	76	79	29	37	9	0	1	633	2	7.34	2.24	3.27	1.76	19.1	5.8	1.27	.281	4.79	9.22
22	Spencer Arrighetti S. Arrighetti	4.61	28	2024	HOU	28	7	13	.350	167	0	0	0	142.2	139	73	80	21	62	6	0	0	621	3	10.54	3.91	2.69	1.32	26.9	10.0	1.41	.323	5.05	8.77
23	Ryne Nelson R. Nelson	4.58	25	2024	ARI	25	9	5	.643	117	0	0	0	137.2	143	70	72	17	30	5	0	2	577	3	7.65	1.96	3.90	1.11	20.3	5.2	1.26	.309	4.71	9.35
24	Alec Marsh A. Marsh	4.57	25	2024	KCR	25	9	9	.500	122	0	0	0	128.0	121	65	70	19	39	11	0	1	543	3	8.58	2.74	3.13	1.34	22.5	7.2	1.25	.290	4.92	8.51
25	Kyle Harrison K. Harrison	4.56	24	2024	SFG	24	7	7	.500	118	0	0	0	124.1	125	63	65	18	42	7	0	0	532	2	8.54	3.04	2.81	1.30	22.2	7.9	1.34	.308	4.71	9.05