which winning team has the smallest average margin of victory in an nba finals

The Cleveland Cavaliers have the lowest point differential per game played by a team in an NBA Finals, with -15.

Interpreted as:

Which winning team has the smallest average margin of victory per game in an NBA finals?

	TEAM	DIFF/GP	DIFF	GP	SEASON	SERIES	MPG	PPG	RPG	APG	SPG	BPG	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	TS%	OREB	DREB	TPG	MIN	PTS	REB	AST	STL	BLK	TOV	PF
1	Cavaliers	-15	-60	4	2017-18	NBA Finals	246.3	101.0	46.5	21.0	6.3	4.0	37.8	92.0	41.0	9.0	30.5	29.5	16.5	22.5	73.3	49.6	16.8	29.8	12.0	985	404	186	84	25	16	48	73
2	Heat	-14	-70	5	2013-14	NBA Finals	240.0	91.6	32.2	15.2	8.0	2.2	33.6	71.2	47.2	9.2	23.2	39.7	15.2	20.6	73.8	57.1	5.6	26.6	15.8	1,200	458	161	76	40	11	79	115
3	Lakers	-12.6	-63	5	1964-65	NBA Finals	240.0	110.8	58.2	19.8			40.8	93.4	43.7				29.2	39.8	73.4	49.9				1,200	554	291	99				130
4	Hawks	-12.4	-62	5	1960-61	NBA Finals	240.0	108.6	60.8	21.4			40.6	109.2	37.2				27.4	35.8	76.5	43.5				1,200	543	304	107				138
5	Bullets	-12.25	-49	4	1970-71	NBA Finals	240.0	94.0	47.8	19.5			40.5	105.5	38.4				13.0	19.3	67.5	41.2			16.8	960	376	191	78			67	91
6	Lakers	-10.25	-41	4	1958-59	NBA Finals	240.0	111.5	67.0	25.0			45.0	116.0	38.8				21.5	29.3	73.5	43.3				960	446	268	100				108
7	Lakers	-10	-40	4	1982-83	NBA Finals	240.0	100.5	42.8	24.5	9.0	7.3	40.8	90.3	45.2	0.8	3.8	20.0	18.3	23.3	78.5	50.0	15.3	27.5	20.0	960	402	171	98	36	29	80	120
8	Rockets	-9.83	-59	6	1980-81	NBA Finals	240.0	86.7	42.7	18.0	7.8	5.7	33.8	89.3	37.9	0.5	1.8	27.3	18.5	25.8	71.6	43.0	18.7	24.0	13.2	1,440	520	256	108	47	34	79	121
9	Lakers	-9.8	-49	5	1990-91	NBA Finals	245.0	91.6	35.6	19.2	6.8	4.4	33.4	74.8	44.7	2.6	9.2	28.3	22.2	27.4	81.0	52.7	11.8	23.8	15.0	1,225	458	178	96	34	22	75	96
10	Magic	-9.4	-47	5	2008-09	NBA Finals	250.0	91.2	38.2	18.4	6.0	6.0	32.2	75.2	42.8	7.6	23.0	33.0	19.2	27.8	69.1	52.2	7.6	30.6	14.6	1,250	456	191	92	30	30	73	110
11	Nets	-9.25	-37	4	2001-02	NBA Finals	240.0	96.8	39.0	21.5	9.5	4.5	38.8	88.8	43.7	4.5	14.8	30.5	14.8	22.0	67.0	49.1	15.0	24.0	11.3	960	387	156	86	38	18	45	105
12	Lakers	-9	-45	5	2003-04	NBA Finals	245.0	81.8	37.6	20.6	7.2	2.8	31.6	76.0	41.6	4.4	17.8	24.7	14.2	22.2	64.0	47.7	10.4	27.2	13.6	1,225	409	188	103	36	14	68	142
13	Lakers	-8.33	-50	6	2007-08	NBA Finals	240.0	93.8	37.2	19.3	6.8	3.2	33.0	74.8	44.1	7.2	20.7	34.7	20.7	28.3	72.9	53.7	8.2	29.0	13.8	1,440	563	223	116	41	19	83	156
14	Heat	-8.2	-41	5	2022-23	NBA Finals	240.0	96.4	37.6	23.0	5.6	4.2	35.8	88.0	40.7	11.6	33.8	34.3	13.2	15.4	85.7	50.9	9.6	28.0	9.2	1,200	482	188	115	28	21	46	99
15	Hawks	-7.86	-55	7	1959-60	NBA Finals	240.0	105.3	57.7	24.7			40.6	96.6	42.0				24.1	32.3	74.8	47.5				1,680	737	404	173				162
16	Jazz	-7.83	-47	6	1997-98	NBA Finals	244.2	80.2	38.0	21.3	6.3	2.5	31.8	71.8	44.3	2.2	10.0	21.7	14.3	18.7	76.8	50.1	10.2	27.8	17.3	1,465	481	228	128	38	15	104	150
17	Trail Blazers	-7.33	-44	6	1991-92	NBA Finals	244.2	96.7	41.8	20.8	7.8	3.8	35.3	79.8	44.3	1.7	8.7	19.2	24.3	30.8	78.9	51.7	13.7	28.2	17.0	1,465	580	251	125	47	23	102	155
18	Cavaliers	-7.17	-43	6	2014-15	NBA Finals	248.3	93.5	47.5	15.8	7.5	5.0	32.7	85.2	38.4	8.2	27.8	29.3	20.0	28.5	70.2	47.8	12.5	35.0	14.5	1,490	561	285	95	45	30	87	133
19	Magic	-7	-28	4	1994-95	NBA Finals	246.3	107.0	46.0	27.5	5.3	5.0	40.8	87.5	46.6	10.3	29.5	34.7	15.3	22.3	68.5	55.0	12.0	34.0	16.3	985	428	184	110	21	20	65	97
20	Cavaliers	-6.8	-34	5	2016-17	NBA Finals	240.0	114.8	43.6	21.6	7.2	3.6	41.6	90.2	46.1	13.2	34.6	38.2	18.4	24.6	74.8	56.8	11.6	32.0	13.4	1,200	574	218	108	36	18	67	112
21	76ers	-6.8	-34	5	2000-01	NBA Finals	245.0	93.8	42.8	18.4	7.8	4.8	35.4	83.4	42.4	3.4	11.8	28.8	19.6	27.4	71.5	49.1	13.2	29.6	13.0	1,225	469	214	92	39	24	65	125
22	Lakers	-6.75	-27	4	1988-89	NBA Finals	240.0	102.3	36.3	23.0	5.5	4.0	36.0	77.5	46.5	3.3	10.8	30.2	27.0	36.0	75.0	54.8	11.8	24.5	11.8	960	409	145	92	22	16	47	104
23	Warriors	-6.67	-40	6	1966-67	NBA Finals	244.2	117.8	72.5	23.7			47.8	123.8	38.6				22.2	31.7	70.0	42.8				1,465	707	435	142				182
24	76ers	-6.33	-38	6	1976-77	NBA Finals	240.0	105.0	44.8	22.7	11.8	5.0	39.5	88.2	44.8				26.0	36.5	71.2	50.4	12.0	32.8	22.0	1,440	630	269	136	71	30	132	174
25	Capitols	-6.33	-38	6	1948-49	NBA Finals	240.0	72.2					25.0						22.2	33.0	67.2					1,440	433						179