most ls in extra innings by a team since 2010

Since 2010, the Seattle Mariners have lost the most games by a team in extra innings, with 982 losses.

Interpreted as:

most regular-season ls in extra innings by a team since 2010

	TEAM	L	W	L%	G	W%	AB	H	2B	3B	HR	RBI	BB	HBP	SO	PA	TB	XBH	SH	SF	IBB	AVG	OBP	SLG	OPS
1	Mariners	982	908	.520	250	.480	1,595	398	73	1	51	250	220	10	414	1,890	626	125	47	17	67	.250	.341	.392	.733
2	Reds	969	846	.534	229	.466	1,513	375	62	10	43	220	216	24	401	1,815	586	115	48	13	52	.248	.348	.387	.736
3	Red Sox	930	1,085	.462	238	.538	1,713	434	70	3	46	275	220	28	422	2,015	648	119	33	20	73	.253	.344	.378	.723
4	Cardinals	909	828	.523	206	.477	1,442	340	56	4	43	205	224	25	378	1,737	533	103	24	21	66	.236	.344	.370	.714
5	Marlins	898	888	.503	236	.497	1,516	379	59	11	27	218	187	15	374	1,786	541	97	47	20	82	.250	.334	.357	.691
6	Mets	888	945	.484	214	.516	1,535	371	62	4	47	208	228	21	369	1,833	582	113	38	11	65	.242	.345	.379	.725
7	Pirates	876	906	.492	212	.508	1,498	368	61	8	37	195	220	11	352	1,782	556	106	38	15	76	.246	.343	.371	.715
8	Phillies	870	992	.467	238	.533	1,546	379	74	8	36	232	235	20	365	1,862	577	118	33	26	86	.245	.347	.373	.720
9	White Sox	869	746	.538	214	.462	1,378	347	61	13	35	206	167	21	384	1,615	539	109	37	12	59	.252	.339	.391	.730
10	Astros	865	707	.550	208	.450	1,326	311	48	6	25	185	186	9	349	1,572	446	79	34	17	63	.235	.329	.336	.665
11	Diamondbacks	849	1,105	.434	224	.566	1,620	419	85	9	40	240	253	18	410	1,954	642	134	43	17	79	.259	.362	.396	.758
12	Rays	849	941	.474	225	.526	1,499	344	62	10	35	228	234	23	415	1,790	531	107	22	12	59	.229	.340	.354	.694
13	Blue Jays	838	887	.486	227	.514	1,440	348	63	5	45	227	218	21	340	1,725	556	113	26	20	49	.242	.345	.386	.732
14	Yankees	805	878	.478	206	.522	1,387	334	57	2	43	217	209	20	355	1,683	524	102	41	25	74	.241	.343	.378	.721
15	Angels	804	789	.505	202	.495	1,313	297	42	7	36	185	202	20	307	1,593	461	85	42	16	71	.226	.335	.351	.686
16	Brewers	798	843	.486	221	.514	1,365	331	51	4	41	213	209	19	374	1,641	513	96	28	20	62	.242	.347	.376	.722
17	Tigers	798	716	.527	202	.473	1,289	332	49	10	36	218	167	12	335	1,514	509	95	32	13	47	.258	.345	.395	.740
18	Athletics	782	940	.454	225	.546	1,452	373	69	5	54	236	207	15	372	1,722	614	128	32	14	49	.257	.352	.423	.775
19	Padres	781	873	.472	207	.528	1,378	345	52	3	34	215	211	13	355	1,654	505	89	36	15	67	.250	.352	.366	.718
20	Braves	778	932	.455	242	.545	1,427	351	54	6	47	232	212	16	357	1,710	558	107	39	16	66	.246	.346	.391	.738
21	Dodgers	778	944	.452	220	.548	1,418	387	75	4	48	250	237	15	329	1,722	614	127	35	16	80	.273	.379	.433	.812
22	Cubs	776	908	.461	205	.539	1,391	366	56	7	36	209	239	14	361	1,684	544	99	24	16	79	.263	.373	.391	.764
23	Twins	753	872	.463	215	.537	1,362	327	47	5	39	226	196	20	342	1,625	501	91	28	19	49	.240	.340	.368	.708
24	Giants	752	1,349	.358	253	.642	1,765	493	82	10	47	304	239	27	423	2,101	736	139	46	24	86	.279	.369	.417	.786
25	Nationals	714	819	.466	201	.534	1,307	332	72	6	38	211	156	22	342	1,533	530	116	31	17	46	.254	.340	.406	.745