Blake Snell had the best ERA in 2023, with an ERA of 2.25.

Interpreted as:

lowest era with a minimum of 1 IP per team game starting by a player pitching 2023

	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	ERA-	FIP	FIP-	H/9	PRAA
1	Blake Snell B. Snell	2.25	32	2023	SDP	32	14	9	.609	234	0	0	0	180.0	115	45	47	15	99	3	0	0	742	13	11.70	4.95	2.36	0.75	31.5	13.3	1.19	.256	2.35	54	3.43	79	5.75	18
2	Gerrit Cole G. Cole	2.63	33	2023	NYY	33	15	4	.789	222	2	2	0	209.0	157	61	64	20	48	7	0	0	821	4	9.56	2.07	4.63	0.86	27.0	5.8	0.98	.261	2.76	61	3.16	72	6.76	28.4
3	Sonny Gray S. Gray	2.79	32	2023	MIN	32	8	8	.500	183	0	0	0	184.0	156	57	59	8	55	6	0	0	754	6	8.95	2.69	3.33	0.39	24.3	7.3	1.15	.295	2.89	65	2.82	66	7.63	29.8
4	Kyle Bradish K. Bradish	2.83	30	2023	BAL	30	12	7	.632	168	0	0	0	168.2	132	53	54	14	44	8	0	0	671	9	8.96	2.35	3.82	0.75	25.0	6.6	1.04	.270	2.88	67	3.26	78	7.04	17.7
5	Kodai Senga K. Senga	2.98	29	2023	NYM	29	12	7	.632	202	0	0	0	166.1	126	55	60	17	77	5	0	0	694	14	10.93	4.17	2.62	0.92	29.1	11.1	1.22	.277	3.25	71	3.63	84	6.82	13
6	Justin Steele J. Steele	3.06	30	2023	CHC	30	16	5	.762	176	0	0	0	173.1	167	59	71	14	36	7	0	0	716	9	9.14	1.87	4.89	0.73	24.6	5.0	1.17	.317	3.69	72	3.01	70	8.67	24.9
7	Kevin Gausman K. Gausman	3.16	31	2023	TOR	31	12	9	.571	237	0	0	0	185.0	163	65	72	19	55	3	0	0	763	3	11.53	2.68	4.31	0.92	31.1	7.2	1.18	.321	3.50	75	2.97	69	7.93	27.1
8	Jordan Montgomery J. Montgomery	3.20	32	2023	TOT	32	10	11	.476	166	0	0	0	188.2	177	67	75	18	48	4	0	0	777	6	7.92	2.29	3.46	0.86	21.4	6.2	1.19	.294	3.58	75	3.56	83	8.44	15.8
9	Justin Verlander J. Verlander	3.22	27	2023	TOT	27	13	8	.619	144	0	0	0	162.1	139	58	63	18	45	5	0	0	669	5	7.98	2.49	3.20	1.00	21.5	6.7	1.13	.265	3.49	76	3.84	90	7.71	8.1
10	Logan Webb L. Webb	3.25	33	2023	SFG	33	10	11	.476	194	2	1	0	216.0	201	78	83	20	31	5	0	0	850	1	8.08	1.29	6.26	0.83	22.8	3.6	1.07	.302	3.46	77	3.16	75	8.38	25.7
11	Merrill Kelly M. Kelly	3.29	30	2023	ARI	30	12	8	.600	187	0	0	0	177.2	143	65	71	20	69	4	0	0	722	3	9.47	3.50	2.71	1.01	25.9	9.6	1.19	.278	3.60	74	3.84	91	7.24	8
12	Luis Castillo L. Castillo	3.34	33	2023	SEA	33	13	9	.591	219	0	0	0	197.0	160	73	81	28	56	5	0	0	802	3	10.01	2.56	3.91	1.28	27.3	7.0	1.10	.267	3.70	83	3.80	93	7.31	6.6
13	George Kirby G. Kirby	3.35	31	2023	SEA	31	12	10	.545	172	1	0	0	190.2	179	71	74	22	19	6	0	1	757	1	8.12	0.90	9.05	1.04	22.7	2.5	1.04	.292	3.49	83	3.34	81	8.45	16.7
14	Corbin Burnes C. Burnes	3.39	32	2023	MIL	32	10	8	.556	200	0	0	0	193.2	141	73	77	22	66	8	0	0	784	10	9.29	3.07	3.03	1.02	25.5	8.4	1.07	.244	3.58	77	3.81	86	6.55	13.1
15	Framber Valdez F. Valdez	3.45	31	2023	HOU	31	12	11	.522	200	2	2	0	198.0	166	76	86	19	57	10	0	0	808	6	9.09	2.59	3.51	0.86	24.8	7.1	1.13	.282	3.91	82	3.49	82	7.55	16.5
16	Zac Gallen Z. Gallen	3.47	34	2023	ARI	34	17	8	.680	220	1	1	0	210.0	188	81	87	22	47	5	0	0	846	8	9.43	2.01	4.68	0.94	26.0	5.6	1.12	.301	3.73	78	3.26	77	8.06	23.4
17	Zach Eflin Z. Eflin	3.50	31	2023	TBR	31	16	8	.667	186	0	0	0	177.2	158	69	69	19	24	3	0	1	703	0	9.42	1.22	7.75	0.96	26.5	3.4	1.02	.295	3.50	85	3.00	72	8.00	23.2
18	Jesús Luzardo J. Luzardo	3.58	32	2023	MIA	32	10	10	.500	208	0	0	0	178.2	162	71	79	22	55	6	0	1	741	7	10.48	2.77	3.78	1.11	28.1	7.4	1.21	.311	3.98	80	3.55	81	8.16	16.4
19	Chris Bassitt C. Bassitt	3.60	33	2023	TOR	33	16	8	.667	186	1	1	0	200.0	176	80	88	28	59	12	0	2	826	4	8.37	2.66	3.15	1.26	22.5	7.1	1.18	.274	3.96	85	4.28	100	7.92	0.1
20	Zack Wheeler Z. Wheeler	3.61	32	2023	PHI	32	13	6	.684	212	0	0	0	192.0	168	77	82	20	39	9	0	0	787	1	9.94	1.83	5.44	0.94	26.9	5.0	1.08	.292	3.84	82	3.15	71	7.88	27.7
21	Charlie Morton C. Morton	3.64	30	2023	ATL	30	14	12	.538	183	0	0	0	163.1	150	66	70	14	83	12	0	2	716	4	10.08	4.57	2.20	0.77	25.6	11.6	1.43	.321	3.86	82	3.87	90	8.27	7.6
22	José Berríos J. Berríos	3.65	32	2023	TOR	32	11	12	.478	184	0	0	0	189.2	173	77	82	25	52	9	0	3	782	4	8.73	2.47	3.54	1.19	23.5	6.6	1.19	.289	3.89	86	3.99	93	8.21	6.1
23	Pablo López P. López	3.66	32	2023	MIN	32	11	8	.579	234	1	1	0	194.0	176	79	81	24	48	9	0	1	801	7	10.86	2.23	4.88	1.11	29.2	6.0	1.15	.313	3.76	86	3.33	78	8.16	20.5
24	Dane Dunning D. Dunning	3.70	26	2023	TEX	35	12	7	.632	140	0	0	0	172.2	163	71	73	20	55	10	2	0	722	6	7.30	2.87	2.55	1.04	19.4	7.6	1.26	.288	3.81	87	4.27	98	8.50	2.1
25	Logan Gilbert L. Gilbert	3.73	32	2023	SEA	32	12	7	.632	189	1	1	0	190.2	169	79	82	29	36	2	0	1	770	6	8.92	1.70	5.25	1.37	24.5	4.7	1.08	.272	3.87	93	3.84	94	7.98	5.6