The New York Highlanders had the most runs by a team in a loss in 1912, with 15 runs against the Philadelphia Athletics on May 3, 1912.

Interpreted as:

team most runs in a regular-season game in losses 1912

	TEAM	R	L	DATE	TM		OPP	RESULT	W	L%	AB	H	2B	3B	HR	RBI	BB	HBP	SO	SB	PA	TB	XBH	SH	AVG	OBP	SLG	OPS
1	Highlanders	15	1	5/3/1912	NYH	@	PHA	L 15-18	0	1.000	41	14	3	1	0	14	8	0	4	0	49	19	4	0	.341	.449	.463	.912
2	Highlanders	12	1	9/26/1912	NYH	@	BSA	L 12-15	0	1.000	40	17	3	2	0	10	3	1	1	6	44	24	5	0	.425	.477	.600	1.077
3	Braves	12	1	6/22/1912	BSN	vs	NYG	L 12-14	0	1.000	47	19	3	1	1	12	3	0	5	2	51	27	5	1	.404	.440	.574	1.014
4	Braves	12	1	6/20/1912	BSN	vs	NYG	L 12-21	0	1.000	41	14	1	1	2	12	2	0	7	5	43	23	4	0	.341	.372	.561	.933
5	Braves	11	1	7/6/1912	BSN	vs	PHN	L 11-13	0	1.000	49	16	5	1	0	9	7	1	5	2	59	23	6	2	.327	.421	.469	.890
6	Senators	11	1	5/29/1912	WSH	@	BSA	L 11-12	0	1.000	38	16	1	1	0	10	6	0		2	46	19	2	2	.421	.500	.500	1.000
7	Cubs	11	1	5/4/1912	CHC	@	PIT	L 11-12	0	1.000	42	15	4	3	0	10	1	1	6	0	44	25	7	0	.357	.386	.595	.982
8	Highlanders	10	1	9/30/1912	NYH	@	PHA	L 10-11	0	1.000	49	15	2	1	0	8	4	0	6	6	53	19	3	0	.306	.358	.388	.746
9	Reds	10	1	9/26/1912	CIN	@	CHC	L 10-11	0	1.000	40	11	1	0	0	9	8	0	10	0	48	12	1	0	.275	.396	.300	.696
10	Braves	10	1	8/10/1912	BSN	vs	CHC	L 10-11	0	1.000	38	15	1	0	0	9	3	2	3	1	47	16	1	4	.395	.465	.421	.886
11	Reds	10	1	6/13/1912	CIN	@	PHN	L 10-11	0	1.000	40	14	3	1	0	9	6	0	4	1	49	19	4	3	.350	.435	.475	.910
12	Reds	10	1	6/5/1912	CIN	@	NYG	L 10-22	0	1.000	41	14	2	1	0	10	2	0	1	0	44	18	3	1	.341	.372	.439	.811
13	Reds	10	1	5/23/1912	CIN	@	SLN	L 10-11	0	1.000	45	15	1	0	1		4	0	1	4	51	19	2	2	.333	.388	.422	.810
14	Highlanders	9	1	9/5/1912	NYH	vs	PHA	L 9-19	0	1.000	35	9	2	1	0	7	5	1	3	2	41	13	3	0	.257	.366	.371	.737
15	Browns	9	1	8/17/1912	SLA	@	NYH	L 9-16	0	1.000	36	12	1	1	1	7	4	0	6	2	41	18	3	1	.333	.400	.500	.900
16	Tigers	9	1	7/6/1912	DET	@	CWS	L 9-10	0	1.000	43	17	1	4	0	8	2	0	4	3	45	26	5	0	.395	.422	.605	1.027
17	Dodgers	9	1	7/3/1912	BKN	@	NYG	L 9-10	0	1.000	44	17	1	2	0	8	2	0	9	2	46	22	3	0	.386	.413	.500	.913
18	White Sox	9	1	6/30/1912	CWS	@	DET	L 9-11	0	1.000	27	10	4	1	0	7	3	1	4	1	32	16	5	1	.370	.452	.593	1.044
19	White Sox	9	1	6/28/1912	CWS	@	DET	L 9-10	0	1.000	41	14	2	0	0	9	3	0	0	2	46	16	2	2	.341	.386	.390	.777
20	Cardinals	9	1	6/4/1912	SLN	@	NYG	L 9-14	0	1.000	40	13	5	0	0	9	1	1	4	0	42	18	5	0	.325	.357	.450	.807
21	Braves	9	1	5/21/1912	BSN	@	PIT	L 9-14	0	1.000	39	14	2	0	0	8	2	1	4	2	45	16	2	3	.359	.405	.410	.815
22	Browns	9	1	5/13/1912	SLA	@	BSA	L 9-14	0	1.000	40	13	1	0	0	7	4	0		0	45	14	1	1	.325	.386	.350	.736
23	Cardinals	9	1	5/5/1912	SLN	vs	CIN	L 9-11	0	1.000	37	10	2	2	3	8	8	0	4	0	46	25	7	1	.270	.400	.676	1.076
24	Highlanders	8	1	9/20/1912	NYH	@	CLE	L 8-9	0	1.000	34	12	2	2	0	8	5	1	5	1	42	18	4	2	.353	.450	.529	.979
25	Senators	8	1	9/13/1912	WSH	@	DET	L 8-9	0	1.000	38	12	4	0	0	7	1	0	3	2	40	16	4	1	.316	.333	.421	.754