The Boston Red Sox lost the most games by a team in extra innings this season, with 66 losses.

Interpreted as:

most ls in extra innings by a team this regular season

	TEAM	L	SEASON	W	L%	G	W%	AB	H	2B	3B	HR	RBI	BB	HBP	SO	PA	TB	XBH	SH	SF	IBB	AVG	OBP	SLG	OPS
1	Red Sox	66	2025	32	.673	20	.327	83	17	2	0	2	17	10	3	27	98	25	4	2	0	7	.205	.313	.301	.614
2	Rangers	65	2025	53	.551	17	.449	90	19	1	0	5	29	22	1	24	118	35	6	2	3	10	.211	.362	.389	.751
3	Mariners	60	2025	102	.370	21	.630	124	25	3	0	4	30	25	1	32	162	40	7	9	2	11	.202	.336	.323	.658
4	Reds	58	2025	13	.817	15	.183	59	9	2	0	1	8	8	0	21	71	14	3	2	2	2	.153	.246	.237	.484
5	Diamondbacks	57	2025	45	.559	19	.441	74	14	1	0	2	18	16	1	22	102	21	3	8	3	6	.189	.330	.284	.614
6	Cardinals	56	2025	23	.709	12	.291	66	14	1	0	1	13	10	2	13	79	18	2	0	1	5	.212	.329	.273	.602
7	Yankees	46	2025	38	.548	14	.452	65	15	3	1	4	17	15	0	14	84	32	8	2	2	6	.231	.366	.492	.858
8	Twins	43	2025	21	.672	15	.328	54	11	1	0	2	13	8	0	14	64	18	3	1	1	2	.204	.302	.333	.635
9	Mets	40	2025	30	.571	13	.429	54	12	2	0	1	11	12	2	10	70	17	3	2	0	6	.222	.382	.315	.697
10	Pirates	40	2025	51	.440	14	.560	70	16	2	0	0	13	16	0	12	91	18	2	4	1	7	.229	.368	.257	.625
11	Tigers	40	2025	32	.556	13	.444	60	17	4	1	4	21	10	1	15	72	35	9	0	1	5	.283	.389	.583	.972
12	Phillies	40	2025	51	.440	15	.560	65	22	3	1	0	25	17	1	14	91	27	4	2	5	6	.338	.455	.415	.870
13	White Sox	37	2025	16	.698	10	.302	39	5	0	0	1	8	10	1	11	53	8	1	3	0	5	.128	.320	.205	.525
14	Angels	36	2025	51	.414	14	.586	62	17	2	2	2	22	17	1	10	87	29	6	5	2	8	.274	.427	.468	.895
15	Rays	35	2025	31	.530	12	.470	54	16	5	0	2	15	6	0	19	66	27	7	3	3	2	.296	.349	.500	.849
16	Astros	34	2025	53	.391	15	.609	65	10	0	0	1	11	16	0	17	87	13	1	4	2	10	.154	.313	.200	.513
17	Rockies	34	2025	7	.829	6	.171	32	4	0	0	0	4	8	0	11	41	4	0	1	0	2	.125	.300	.125	.425
18	Braves	31	2025	43	.419	16	.581	55	10	2	1	1	13	12	2	11	74	17	4	2	3	6	.182	.333	.309	.642
19	Marlins	30	2025	68	.306	14	.694	83	28	6	0	2	29	11	0	13	98	40	8	1	3	5	.337	.402	.482	.884
20	Brewers	28	2025	35	.444	12	.556	55	17	2	0	2	18	7	0	8	63	25	4	0	1	4	.309	.381	.455	.835
21	Guardians	28	2025	56	.333	18	.667	61	23	8	1	2	29	15	1	13	84	39	11	2	5	7	.377	.476	.639	1.115
22	Orioles	27	2025	49	.355	12	.645	61	16	5	0	3	18	13	0	16	76	30	8	2	0	4	.262	.392	.492	.884
23	Royals	27	2025	34	.443	12	.557	47	12	2	0	1	17	9	1	15	61	17	3	2	2	2	.255	.373	.362	.735
24	Cubs	26	2025	21	.553	11	.447	42	8	1	1	0	9	4	0	10	47	11	2	0	1	2	.190	.255	.262	.517
25	Giants	25	2025	56	.309	15	.691	59	17	3	0	2	27	13	1	15	81	26	5	5	3	4	.288	.408	.441	.849