how often do teams that win game 1 of a playoff series win the series

The Chicago Stags won 3 times in game ones all-time.

	TEAM	W	GP	MPG	PPG	RPG	APG	SPG	BPG	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	TS%	TPG	MIN	PTS	REB	AST	STL	BLK	TOV	PF
1	Stags	3	8	240.0	74.1					27.4						19.4	29.0	66.8			1,920	593						220
2	Rebels	1	1	240.0	77.0					30.0						17.0	25.0	68.0			240	77						16
3	Knicks	44	88	242.0	95.8					36.4			5.4	14.5	37.6	20.0	26.9	74.4			21,295	8,434
4	Warriors	44	79	241.9	105.3	50.9		9.2	6.1	40.4			10.5	27.8	37.9	19.1	26.3	72.6			19,110	8,318	3,667		441	291		1,885
5	Bombers	1	3	240.0	64.0					24.0						16.0	22.3	71.6			720	192						66
6	Capitols	2	6	240.0	79.2					28.2						22.8	29.8	76.5			1,440	475						171
7	Bullets	4	6	240.0	72.8					22.0						28.8	37.3	77.2			1,440	437
8	Celtics	92	139	241.4	107.1					41.0			6.4	17.7	36.1	21.2	27.3	77.9			33,560	14,893						3,252
9	Kings	18	45	241.1	96.6			8.2	4.1	36.0			4.9	13.4	36.3	22.4	29.6	75.7		16.3	10,850	4,349			189	95	376	1,079
10	Lakers	106	164	240.8	103.7			8.3	6.3	39.5			4.3	12.8	33.6	22.2	30.0	74.1			39,485	17,008			862	659		3,864
11	Pistons	38	81	240.0	94.2					35.8			4.2	11.7	35.4	19.9	27.0	73.7			19,440	7,631						1,897
12	Packers	1	3	240.0	71.0					23.0						25.0	34.0	73.5			720	213						92
13	Olympians	2	5	240.0	76.6					26.6						23.4	34.2	68.4			1,200	383						128
14	Red Skins	0	1	240.0	85.0					28.0	87.0	32.2				29.0	44.0	65.9	40.0		240	85						33
15	Hawks	36	78	240.6	101.8					38.1			5.5	17.1	32.2	22.5	30.4	73.8			18,770	7,941						1,880
16	76ers	51	101	242.0	103.5					38.8			4.0	11.7	34.0	23.8	32.2	74.0			24,440	10,456						2,521
17	Wizards	17	46	242.7	100.0	47.2	19.8			39.2	88.8	44.1	4.9	14.4	33.8	19.3	26.3	73.5	49.8		11,165	4,598	2,169	912				1,075
18	Bulls	40	69	242.2	97.4	43.8	22.5			37.7	84.1	44.9	4.4	13.1	33.6	18.2	23.9	76.3	51.5		16,710	6,720	3,023	1,553				1,565
19	Rockets	30	63	241.2	102.3	43.0	22.8		5.7	38.9	84.8	45.9	6.7	19.5	34.2	18.4	24.9	73.9	53.4		15,195	6,443	2,709	1,434		351		1,399
20	Bucks	24	61	241.6	102.0	44.2	22.8			39.9	87.3	45.7	5.6	18.2	30.5	18.0	24.7	72.7	52.0		14,740	6,225	2,698	1,389				1,411
21	Suns	33	64	241.2	105.5	42.5	24.2	7.9	5.0	41.0	87.0	47.1	5.4	15.5	34.8	18.9	24.3	77.5	54.0	14.5	15,435	6,753	2,721	1,549	495	317	914	1,405
22	Clippers	13	27	240.9	105.9	41.6	22.2			40.0	83.9	47.7	9.8	24.8	39.6	17.4	23.8	73.2	56.1		6,505	2,858	1,122	599				608
23	Thunder	37	67	240.7	103.0	44.0	22.1	8.1	5.3	38.8	84.3	46.0	5.9	16.5	35.8	20.4	26.7	76.5	53.6	14.1	16,130	6,903	2,947	1,479	541	353	948	1,546
24	Cavaliers	22	51	241.5	98.1	42.1	21.1	7.1	4.6	37.1	83.3	44.5	6.8	21.1	32.3	17.7	23.8	74.4	52.3		12,315	5,004	2,149	1,076	360	234		985
25	Spurs	48	79	241.6	100.9	42.2	22.2	7.8	5.5	38.7	82.1	47.1	5.3	14.0	38.2	18.5	25.7	72.1	54.0		19,085	7,973	3,335	1,754	618	437		1,701