The Boston Red Sox have the best ERA by a team this season, with an ERA of 2.38.

Interpreted as:

What team has the best lefty pitcher this regular season?

	TEAM	ERA	SEASON	G	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	Red Sox	2.38	2025	105	18	218	0	0	9	192.2	162	51	65	13	69	5	28	4	800	6	10.18	3.22	3.16	0.61	27.3	8.6	1.20	.301	3.04	57	2.83	69	7.57	26.8
2	Yankees	2.42	2025	82	31	250	0	0	0	245.2	170	66	74	24	71	5	18	0	969	7	9.16	2.60	3.52	0.88	25.8	7.3	0.98	.236	2.71	61	3.23	77	6.23	25.3
3	Giants	2.56	2025	44	16	122	0	0	0	116.0	88	33	33	8	53	2	4	4	475	4	9.47	4.11	2.30	0.62	25.7	11.2	1.22	.276	2.56	65	3.28	86	6.83	6.7
4	Tigers	2.66	2025	66	15	165	1	1	2	149.0	116	44	47	14	29	6	5	2	580	2	9.97	1.75	5.69	0.85	28.4	5.0	0.97	.279	2.84	68	2.78	69	7.01	20.6
5	Braves	2.73	2025	68	13	157	0	0	1	135.1	111	41	48	13	46	9	9	5	557	4	10.44	3.06	3.41	0.86	28.2	8.3	1.16	.295	3.19	67	3.22	83	7.38	10.1
6	Mets	2.76	2025	51	12	114	0	0	0	114.1	101	35	40	6	41	7	7	1	484	2	8.97	3.23	2.78	0.47	23.6	8.5	1.24	.301	3.15	71	3.02	77	7.95	11.6
7	Astros	2.85	2025	110	18	232	2	0	17	208.1	151	66	66	17	50	9	35	2	820	8	10.02	2.16	4.64	0.73	28.3	6.1	0.96	.262	2.85	73	2.75	69	6.52	29.4
8	Cubs	2.90	2025	74	26	169	0	0	2	183.0	149	59	66	20	54	9	11	1	741	1	8.31	2.66	3.13	0.98	22.8	7.3	1.11	.264	3.25	74	3.67	95	7.33	4.1
9	Reds	2.98	2025	71	24	157	0	0	0	178.1	152	59	66	20	49	10	12	1	736	8	7.92	2.47	3.20	1.01	21.3	6.7	1.13	.264	3.33	69	3.76	90	7.67	8.6
10	Royals	2.98	2025	91	29	227	0	0	1	223.2	186	74	80	18	81	9	12	3	923	8	9.13	3.26	2.80	0.72	24.6	8.8	1.19	.286	3.22	72	3.29	81	7.48	18.9
11	Mariners	3.07	2025	32	0	41	0	0	0	29.1	26	10	10	3	8	1	4	0	122	0	12.58	2.45	5.13	0.92	33.6	6.6	1.16	.333	3.07	83	2.52	65	7.98	4.6
12	Rangers	3.07	2025	79	10	110	0	0	3	126.0	107	43	46	12	42	1	14	1	513	6	7.86	3.00	2.62	0.86	21.4	8.2	1.18	.273	3.29	78	3.58	87	7.64	7.7
13	Twins	3.14	2025	28	0	28	0	0	2	28.2	26	10	10	2	7	1	12	0	118	1	8.79	2.20	4.00	0.63	23.7	5.9	1.15	.300	3.14	79	2.86	71	8.16	3.8
14	Marlins	3.32	2025	34	4	49	0	0	0	57.0	56	21	25	7	21	1	8	1	248	4	7.74	3.32	2.33	1.11	19.8	8.5	1.35	.288	3.95	80	4.10	104	8.84	-0.9
15	Cardinals	3.36	2025	77	14	113	0	0	1	144.2	141	54	63	9	32	5	16	3	604	4	7.03	1.99	3.53	0.56	18.7	5.3	1.20	.297	3.92	85	3.08	79	8.77	13
16	Blue Jays	3.50	2025	72	6	121	0	0	0	105.1	73	41	44	10	43	7	6	1	428	4	10.34	3.67	2.81	0.85	28.3	10.0	1.10	.255	3.76	89	3.43	85	6.24	7.3
17	Phillies	3.53	2025	105	31	275	0	0	10	247.0	238	97	105	21	76	6	24	0	1,038	10	10.02	2.77	3.62	0.77	26.5	7.3	1.27	.329	3.83	87	2.94	73	8.67	29.7
18	Pirates	3.61	2025	102	24	156	0	0	0	214.2	178	86	95	19	77	11	17	5	884	5	6.54	3.23	2.03	0.80	17.6	8.7	1.19	.256	3.98	87	4.00	101	7.46	-0.9
19	Rays	3.77	2025	49	0	56	0	0	2	43.0	34	18	19	9	15	2	8	0	178	0	11.72	3.14	3.73	1.88	31.5	8.4	1.14	.260	3.98	99	4.37	111	7.12	-2.2
20	Dodgers	3.89	2025	121	10	144	0	0	13	150.1	131	65	74	20	61	2	24	4	625	9	8.62	3.65	2.36	1.20	23.0	9.8	1.28	.279	4.43	98	4.14	102	7.84	-1.5
21	Guardians	3.94	2025	70	12	109	0	0	1	125.2	122	55	64	12	63	5	14	1	555	6	7.81	4.51	1.73	0.86	19.6	11.4	1.47	.301	4.58	101	4.20	105	8.74	-2.7
22	Angels	4.12	2025	90	25	176	0	0	1	203.1	202	93	103	28	101	7	18	10	898	11	7.79	4.47	1.74	1.24	19.6	11.2	1.49	.297	4.56	102	4.72	113	8.94	-11.7
23	Padres	4.23	2025	87	6	93	0	0	1	106.1	96	50	56	13	38	0	20	3	450	3	7.87	3.22	2.45	1.10	20.7	8.4	1.26	.271	4.74	109	3.98	102	8.13	-0.8
24	Nationals	4.33	2025	81	25	199	0	0	0	189.0	174	91	98	16	81	11	6	0	812	13	9.48	3.86	2.46	0.76	24.5	10.0	1.35	.313	4.67	108	3.52	88	8.29	10
25	Brewers	4.47	2025	91	16	131	0	0	1	149.0	141	74	84	17	69	7	17	4	656	3	7.91	4.17	1.90	1.03	20.0	10.5	1.41	.287	5.07	110	4.32	108	8.52	-5.3