4 pitchers were tied for their lowest ERA in a season, with an ERA of 0.00. The first three are Jay Jackson in 2022, Jon Jay in 2017 and Jay Powell in 2005.

Interpreted as:

best in a regular season pitchers for jays

	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	Jay Jackson J. Jackson	0.00	2022	ATL	2	0	0		0	1	0	0	0	1.1	1	0	0	0	0	0	1	0	5	0	6.75	0.00		0.00	20.0	0.0	0.75	.250	0.00	0	1.61	41	6.75	0.3
2	Jon Jay J. Jay	0.00	2017	CHC	1	0	0		0	0	0	0	0	1.0	1	0	0	0	0	0	1	0	4	0	0.00	0.00		0.00	0.0	0.0	1.00	.250	0.00	0	3.15	73	9.00	0.1
3	Jay Powell J. Powell	0.00	2005	ATL	5	0	0		0	1	0	0	0	3.1	1	0	0	0	4	0	1	0	15	0	2.70	10.80	0.25	0.00	6.7	26.7	1.50	.100	0.00	0	6.01	143	2.70	-0.7
4	Joey Jay J. Jay	0.00	1957	MIL	1	0	0		0	0	0	0	1	0.2	0	0	0	0	0	0	1	0	2	0	0.00	0.00		0.00	0.0	0.0	0.00	.000	0.00	0	2.46	70	0.00	0.1
5	Joey Jay J. Jay	0.00	1953	MIL	3	1	0	1.000	1	4	1	1	0	10.0	6	0	0	0	5	0	1		37	1	3.60	4.50	0.80	0.00	10.8	13.5	1.10	.214	0.00	0	3.29	84	5.40	0.7
6	Jay Powell J. Powell	1.08	1995	FLA	9	0	0		0	4	0	0	0	8.1	7	1	2	0	6	2	1	1	38	0	4.32	6.48	0.67	0.00	10.5	15.8	1.56	.269	2.16	26	5.02	119	7.56	-0.7
7	Jay Howell J. Howell	1.54	1992	LAD	41	1	3	.250	0	36	0	0	4	46.2	41	8	9	2	18	1	26	5	203	3	6.94	3.47	2.00	0.39	17.7	8.9	1.26	.267	1.74	46	3.01	88	7.91	2.2
8	Jay Howell J. Howell	1.58	1989	LAD	56	5	3	.625	0	55	0	0	28	79.2	60	14	15	3	22	0	41	6	312	1	6.21	2.49	2.50	0.34	17.6	7.1	1.03	.246	1.69	47	2.69	76	6.78	7.4
9	Jay Howell J. Howell	2.08	1988	LAD	50	5	3	.625	0	70	0	0	21	65.0	44	15	16	1	21	1	38	2	262	2	9.69	2.91	3.33	0.14	26.7	8.0	1.00	.254	2.22	63	1.82	54	6.09	11.7
10	Jay Jackson J. Jackson	2.12	2023	TOR	25	3	1	.750	0	27	0	0	0	29.2	18	7	8	4	9	1	10	2	116	1	8.19	2.73	3.00	1.21	23.3	7.8	0.91	.187	2.43	50	4.20	98	5.46	0.3
11	Joey Jay J. Jay	2.14	1958	MIL	18	7	5	.583	12	74	6	3	0	96.2	60	23	25	8	43	1	2	3	387	2	6.89	4.00	1.72	0.74	19.1	11.1	1.07	.199	2.33	59	3.39	94	5.59	2.2
12	Jay Howell J. Howell	2.18	1990	LAD	45	5	5	.500	0	59	0	0	16	66.0	59	16	17	5	20	6	35	3	271	4	8.05	2.73	2.95	0.68	21.8	7.4	1.20	.298	2.32	59	3.18	86	8.05	3.9
13	Jay Howell J. Howell	2.31	1993	ATL	54	3	3	.500	0	37	0	0	0	58.1	48	15	16	3	16	0	22	4	233	0	5.71	2.47	2.31	0.46	15.9	6.9	1.10	.254	2.47	56	3.20	78	7.41	6
14	Jay Witasick J. Witasick	2.37	2002	SFG	44	1	0	1.000	0	54	0	0	0	68.1	58	18	19	3	21	4	9	3	276	3	7.11	2.77	2.57	0.40	19.6	7.6	1.16	.284	2.50	60	3.04	76	7.64	7.4
15	Jay Howell J. Howell	2.69	1984	NYY	61	9	4	.692	1	109	0	0	7	103.2	86	31	33	5	34	0	23	3	426	4	9.46	2.95	3.21	0.43	25.6	8.0	1.16	.291	2.86	70	2.27	58	7.47	19.4
16	Jay Ritchie J. Ritchie	2.74	1964	BOS	21	1	1	.500	0	35	0	0	0	46.0	43	14	21	4	14	0	4	2	195	0	6.85	2.74	2.50	0.78	17.9	7.2	1.24	.275	4.11	71	3.13	78	8.41	4.3
17	Jay Tibbs J. Tibbs	2.82	1989	BAL	10	5	0	1.000	8	30	1	0	0	54.1	62	17	17	2	20	0	0	0	238	3	4.97	3.31	1.50	0.33	12.6	8.4	1.51	.323	2.82	74	3.23	85	10.27	3.4
18	Jay Witasick J. Witasick	2.84	2005	TOT	60	1	5	.167	0	73	0	0	1	63.1	53	20	26	4	29	6	11	5	277	5	10.37	4.12	2.52	0.57	26.4	10.5	1.29	.297	3.69	64	3.18	73	7.53	8.3
19	Jay Howell J. Howell	2.85	1985	OAK	63	9	8	.529	0	68	0	0	29	98.0	98	31	32	5	31	1	58	3	414	4	6.24	2.85	2.19	0.46	16.4	7.5	1.32	.301	2.94	73	2.93	73	9.00	12.2
20	Jay Tibbs J. Tibbs	2.86	1984	CIN	14	6	2	.750	14	40	3	1	0	100.2	87	32	34	4	33	0	0	1	403	2	3.58	2.95	1.21	0.36	9.9	8.2	1.19	.255	3.04	77	3.47	95	7.78	1.9
21	Jay Tessmer J. Tessmer	3.12	1998	NYY	7	1	0	1.000	0	6	0	0	0	8.2	4	3	3	1	4	0	3	0	33	1	6.23	4.15	1.50	1.04	18.2	12.1	0.92	.136	3.12	68	4.63	102	4.15	-0.1
22	Jay Ritchie J. Ritchie	3.17	1965	BOS	44	1	2	.333	0	55	0	0	2	71.0	83	25	30	3	26	1	24	5	311	0	6.97	3.30	2.12	0.38	17.7	8.4	1.54	.354	3.80	85	2.66	69	10.52	9.1
23	Jay Ritchie J. Ritchie	3.17	1967	ATL	52	4	6	.400	0	57	0	0	2	82.1	75	29	32	6	29	4	15	11	351	6	6.23	3.17	1.97	0.66	16.2	8.3	1.26	.271	3.50	93	3.30	100	8.20	-0.1
24	Jay Howell J. Howell	3.18	1991	LAD	44	6	5	.545	0	40	0	0	16	51.0	39	18	19	3	11	1	35	3	202	0	7.06	1.94	3.64	0.53	19.8	5.4	0.98	.245	3.35	89	2.75	75	6.88	5.3
25	Jay Witasick J. Witasick	3.21	2004	SDP	44	0	1	.000	0	57	0	0	1	61.2	57	22	28	8	26	1	20	2	266	4	8.32	3.79	2.19	1.17	21.4	9.8	1.35	.282	4.09	81	4.19	99	8.32	0.1