Adam Wainwright had the worst ERA with 100.0+ innings pitched in 2023, with an ERA of 7.40.

Interpreted as:

worst era by a player in 2023 min 100 ip

	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	Adam Wainwright A. Wainwright	7.40	101.0	2023	STL	21	5	11	.313	21	55	0	0	0	151	83	89	20	41	1	0	0	484	1	4.90	3.65	1.34	1.78	11.4	8.5	1.90	.357	7.93	172	5.98	140	13.46	-19.5
2	Joey Wentz J. Wentz	6.90	105.2	2023	DET	25	3	13	.188	19	98	0	0	0	131	81	87	25	47	0	0	0	492	2	8.35	4.00	2.09	2.13	19.9	9.6	1.68	.329	7.41	163	5.81	137	11.16	-18.6
3	Chris Flexen C. Flexen	6.86	102.1	2023	TOT	29	2	8	.200	16	74	0	0	0	133	78	81	25	38	4	9	0	466	6	6.51	3.34	1.95	2.20	15.9	8.2	1.67	.332	7.12	153	6.21	142	11.70	-20.7
4	Luke Weaver L. Weaver	6.40	123.2	2023	TOT	29	3	6	.333	25	109	0	0	0	155	88	90	29	40	4	1	0	563	3	7.93	2.91	2.73	2.11	19.4	7.1	1.58	.331	6.55	141	5.60	123	11.28	-13.5
5	Jordan Lyles J. Lyles	6.28	177.2	2023	KCR	31	6	17	.261	31	120	3	0	0	176	124	130	39	45	6	0	0	748	10	6.08	2.28	2.67	1.98	16.0	6.0	1.24	.255	6.59	140	5.62	131	8.92	-26.3
6	Lance Lynn L. Lynn	5.73	183.2	2023	TOT	32	13	11	.542	32	191	0	0	0	189	117	127	44	67	9	0	1	808	3	9.36	3.28	2.85	2.16	23.6	8.3	1.39	.292	6.22	133	5.53	125	9.26	-21.7
7	Taj Bradley T. Bradley	5.59	104.2	2023	TBR	23	5	8	.385	21	129	0	0	0	106	65	69	23	39	1	0	0	460	6	11.09	3.35	3.31	1.98	28.0	8.5	1.39	.310	5.93	136	4.79	115	9.11	-7.8
8	Trevor Williams T. Williams	5.55	144.1	2023	WSH	30	6	10	.375	30	111	0	0	0	178	89	97	34	53	5	0	1	659	0	6.92	3.30	2.09	2.12	16.8	8.0	1.60	.316	6.05	128	5.98	135	11.10	-24.8
9	Brady Singer B. Singer	5.52	159.2	2023	KCR	29	8	11	.421	29	133	0	0	0	182	98	102	20	49	8	0	0	702	3	7.50	2.76	2.71	1.13	18.9	7.0	1.45	.329	5.75	123	4.28	100	10.26	-0.1
10	Austin Gomber A. Gomber	5.50	139.0	2023	COL	27	9	9	.500	27	87	0	0	0	164	85	88	26	43	3	0	1	603	5	5.63	2.78	2.02	1.68	14.4	7.1	1.49	.311	5.70	111	5.42	118	10.62	-11.9
11	Michael Kopech M. Kopech	5.43	129.1	2023	CWS	30	5	12	.294	27	134	0	0	0	115	78	80	29	91	11	2	0	591	9	9.32	6.33	1.47	2.02	22.7	15.4	1.59	.264	5.57	126	6.46	147	8.00	-28.5
12	Tyler Anderson T. Anderson	5.43	141.0	2023	LAA	27	6	6	.500	25	119	0	0	0	146	85	90	20	64	7	0	1	629	6	7.60	4.09	1.86	1.28	18.9	10.2	1.49	.301	5.74	124	4.92	112	9.32	-7.6
13	Luis Medina L. Medina	5.42	109.2	2023	OAK	23	2	10	.167	17	106	0	0	0	109	66	73	14	57	8	0	2	495	11	8.70	4.68	1.86	1.15	21.4	11.5	1.51	.306	5.99	132	4.76	115	8.95	-7.7
14	Rich Hill R. Hill	5.41	146.1	2023	TOT	32	8	14	.364	27	129	0	0	0	165	88	98	23	58	7	3	0	660	2	7.93	3.57	2.22	1.41	19.5	8.8	1.52	.321	6.03	123	4.86	111	10.15	-8.2
15	Ken Waldichuk K. Waldichuk	5.36	141.0	2023	OAK	35	4	8	.333	22	132	0	0	1	149	84	93	24	71	9	2	1	639	7	8.43	4.53	1.86	1.53	20.7	11.1	1.56	.310	5.94	131	5.29	127	9.51	-18.6
16	Ryne Nelson R. Nelson	5.31	144.0	2023	ARI	29	8	8	.500	27	96	0	0	0	159	85	87	24	46	1	1	0	619	6	6.00	2.88	2.09	1.50	15.5	7.4	1.42	.299	5.44	120	5.06	119	9.94	-13.7
17	Patrick Corbin P. Corbin	5.20	180.0	2023	WSH	32	10	15	.400	32	124	0	0	0	210	104	113	33	57	4	0	0	790	6	6.20	2.85	2.18	1.65	15.7	7.2	1.48	.309	5.65	120	5.27	119	10.50	-16.9
18	Hunter Brown H. Brown	5.09	155.2	2023	HOU	31	11	13	.458	29	178	0	0	0	157	88	94	26	55	9	1	0	665	4	10.29	3.18	3.24	1.50	26.8	8.3	1.36	.330	5.43	120	4.37	103	9.08	-2.3
19	Zack Greinke Z. Greinke	5.06	142.1	2023	KCR	30	2	15	.118	27	97	0	0	0	158	80	82	25	23	4	0	0	593	2	6.13	1.45	4.22	1.58	16.4	3.9	1.27	.300	5.19	113	4.74	111	9.99	-7.3
20	Kyle Freeland K. Freeland	5.03	155.2	2023	COL	29	5	14	.263	29	94	0	0	0	187	87	96	29	42	1	0	0	677	2	5.43	2.43	2.24	1.68	13.9	6.2	1.47	.309	5.55	102	5.29	115	10.81	-11.2
21	David Peterson D. Peterson	5.03	111.0	2023	NYM	27	3	8	.273	21	128	1	0	0	124	62	64	16	50	6	0	0	492	6	10.38	4.05	2.56	1.30	26.0	10.2	1.57	.370	5.19	120	4.33	100	10.05	-0.1
22	Tanner Houck T. Houck	5.01	106.0	2023	BOS	21	6	10	.375	21	99	0	0	0	104	59	61	14	41	6	0	0	463	1	8.41	3.48	2.41	1.19	21.4	8.9	1.37	.297	5.18	110	4.43	102	8.83	-1.2
23	Drew Smyly D. Smyly	5.00	142.1	2023	CHC	41	11	11	.500	23	141	0	0	0	147	79	89	26	56	6	4	0	626	9	8.92	3.54	2.52	1.64	22.5	8.9	1.43	.305	5.63	118	4.95	115	9.30	-10.8
24	Jack Flaherty J. Flaherty	4.99	144.1	2023	TOT	29	8	9	.471	27	148	0	0	0	162	80	83	17	66	12	0	2	650	8	9.23	4.12	2.24	1.06	22.8	10.2	1.58	.356	5.18	117	4.35	102	10.10	-1.5
25	Tony Gonsolin T. Gonsolin	4.98	103.0	2023	LAD	20	7	5	.583	20	82	0	0	0	86	57	61	19	40	7	0	1	435	2	7.17	3.50	2.05	1.66	18.9	9.2	1.22	.233	5.33	116	5.43	122	7.51	-10.7