The California Angels and the Montreal Expos were tied for the most runs in a game in 1973, with 19 runs.

Interpreted as:

MLB team most runs in a regular-season game 1973

	TEAM	R	DATE	TM		OPP	RESULT	AB	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Angels	19	7/28/1973	CAL	@	KCR	W 19-8	47	21	3	0	3	18	7	0	8	0	0	54	33	6	0	0	1	2	.447	.519	.702	1.221
2	Expos	19	7/3/1973	MON	vs	NYM	W 19-8	44	21	3	0	4	19	7	0	6	0	0	52	36	7	0	1	1	0	.477	.538	.818	1.357
3	Orioles	18	9/28/1973	BAL	vs	CLE	W 18-4	34	14	3	0	1	17	15	0	5	3	1	50	20	4	0	1	1	2	.412	.580	.588	1.168
4	Braves	18	6/13/1973	ATL	vs	PIT	W 18-3	40	17	2	0	1	17	9	0	2	2	0	49	22	3	0	0	1	1	.425	.531	.550	1.081
5	Reds	17	8/2/1973	CIN	@	ATL	W 17-2	42	17	3	0	2	13	9	0	7	2	0	54	26	5	0	3	0	0	.405	.481	.619	1.101
6	Brewers	17	7/7/1973	MIL	vs	TEX	W 17-2	42	18	4	1	2	14	7	2	7	0	0	51	30	7	0	0	1	1	.429	.529	.714	1.244
7	Expos	17	6/8/1973	MON	vs	SFG	W 17-3	35	12	5	0	1	13	12	2	5	0	0	51	20	6	1	1	1	0	.343	.520	.571	1.091
8	Athletics	17	5/10/1973	OAK	@	TEX	W 17-2	50	23	2	0	2	17	7	0	8	0	0	58	31	4	0	1	0	0	.460	.517	.620	1.137
9	Red Sox	16	6/28/1973	BOS	vs	CLE	W 16-7	39	19	4	1	1	16	7	0	3	0	0	49	28	6	0	3	0	1	.487	.531	.718	1.249
10	Phillies	16	6/13/1973	PHI	vs	LAD	W 16-3	37	12	1	3	2	15	2	2	5	0	0	42	25	6	0	1	0	0	.324	.381	.676	1.057
11	Cubs	16	5/31/1973	CHC	vs	HOU	W 16-8	41	14	1	0	2	14	5	1	8	0	0	47	21	3	0	0	1	0	.341	.426	.512	.938
12	White Sox	16	4/20/1973	CWS	@	KCR	W 16-2	38	17	5	0	1	14	11	2	4	0	0	53	25	6	1	1	0	4	.447	.577	.658	1.235
13	Royals	16	4/19/1973	KCR	vs	OAK	W 16-8	44	19	6	1	1	15	9	0	4	1	0	53	30	8	0	0	0	0	.432	.528	.682	1.210
14	Angels	15	9/23/1973	CAL	@	MIN	W 15-7	43	15	2	0	1	13	7	0	6	2	0	50	20	3	0	0	0	1	.349	.440	.465	.905
15	Yankees	15	9/8/1973	NYY	vs	MIL	W 15-1	35	9	1	0	2	14	13	1	9	0	0	49	16	3	0	0	0	0	.257	.469	.457	.927
16	Red Sox	15	8/21/1973	BOS	@	TEX	W 15-9	42	19	3	1	3	15	7	0	2	2	0	49	33	7	0	0	0	3	.452	.531	.786	1.316
17	Braves	15	8/15/1973	ATL	@	CHC	W 15-1	45	19	2	1	2	15	4	0	8	0	0	51	29	5	1	1	0	0	.422	.460	.644	1.104
18	Braves	15	7/13/1973	ATL	vs	MON	W 15-6	41	21	2	1	2	14	4	0	3	0	0	46	31	5	0	1	0	2	.512	.543	.756	1.300
19	White Sox	15	7/3/1973	CWS	@	TEX	W 15-1	42	15	2	0	0	14	10	0	9	1	0	54	17	2	0	2	0	0	.357	.463	.405	.868
20	Cardinals	15	6/27/1973	STL	@	PIT	W 15-4	45	22	6	1	2	13	4	0	7	0	1	50	36	9	0	1	0	1	.489	.520	.800	1.320
21	Brewers	15	6/17/1973	MIL	@	CWS	W 15-5	42	16	5	0	3	15	7	0	3	0	1	49	30	8	0	0	0	1	.381	.469	.714	1.184
22	Dodgers	15	5/13/1973	LAD	@	SFG	W 15-3	44	20	5	0	2	14	8	0	4	0	0	53	31	7	1	0	0	2	.455	.538	.705	1.243
23	Giants	15	4/17/1973	SFG	vs	ATL	W 15-2	44	21	6	0	1	14	6	0	6	0	0	50	30	7	0	0	2	1	.477	.540	.682	1.222
24	Red Sox	15	4/6/1973	BOS	vs	NYY	W 15-5	45	20	4	0	3	13	2	2	3	2	0	50	33	7	0	1	1	0	.444	.480	.733	1.213
25	Red Sox	14	9/24/1973	BOS	@	DET	W 14-0	40	15	2	0	3	14	8	0	6	0	0	49	26	5	0	1	0	0	.375	.469	.650	1.119