how many times has the team that beat the defending champs advanced to the finals

The Chicago Stags didn't win any championships in the NBA Finals all-time.

	TEAM	CHAMPS	GP	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	Stags	0	5	NBA Finals	240.0	74.2					28.4						17.4	27.4	63.5					1,200	371						129
2	Warriors	7	65	NBA Finals	241.5	101.2	49.2		8.3	5.6	37.0			13.3	35.6	37.2	20.3	27.6	73.6		10.7	32.4	14.6	15,700	6,580	2,659		316	212	554	1,593
3	Bullets	1	6	NBA Finals	240.0	74.3		7.3			25.0	95.7	26.1				24.3	33.7	72.3	33.6				1,440	446		44				170
4	Capitols	0	6	NBA Finals	240.0	72.2					25.0						22.2	33.0	67.2					1,440	433						179
5	Lakers	17	185	NBA Finals	242.2	101.7			7.7	5.2	38.3			4.1	11.9	34.2	23.1	31.9	72.4		12.5	29.4	14.6	44,800	18,822			729	498	1,535	4,667
6	76ers	3	53	NBA Finals	240.9	98.1			9.7	7.3	36.7			1.0	4.4	23.9	24.2	35.0	69.2		13.2	29.3	16.7	12,770	5,200			263	197	452	1,357
7	Knicks	2	48	NBA Finals	242.6	89.7			8.1	5.0	34.6	83.7	41.3	3.9	13.3	29.6	19.6	26.9	72.9	47.0	12.8	28.2	14.0	11,645	4,306			97	60	309	1,233
8	Royals	1	7	NBA Finals	240.0	83.3	51.9	24.3			29.4	73.7	39.9				24.4	33.1	73.7	47.2				1,680	583	363	170				182
9	Pistons	3	40	NBA Finals	241.9	96.2			6.9	5.5	35.5			2.8	8.9	31.5	23.3	30.9	75.5		13.6	29.2	11.6	9,675	3,848			194	153	326	1,007
10	Celtics	18	140	NBA Finals	242.7	109.1	54.1		7.6	4.4	41.4	96.2	43.1	5.3	14.5	36.6	24.2	31.7	76.1	49.5	13.0	31.3	15.3	33,975	15,268	7,571		514	298	1,042	3,580
11	Hawks	1	25	NBA Finals	244.0	107.5	59.3				38.4	98.3	39.1				30.6	41.5	73.7	46.1				6,100	2,687	1,483					702
12	Bullets	1	20	NBA Finals	242.5	98.8	46.9	21.3	8.0	4.7	39.9	95.3	41.8				19.1	27.0	70.6	46.1	16.0	30.7	17.1	4,850	1,975	938	426	128	75	342	518
13	Bucks	2	17	NBA Finals	244.4	102.3	47.2	23.0	5.3	3.6	40.8	85.9	47.5	11.0	31.2	35.3	16.8	22.6	74.0	53.3	12.7	32.2	17.6	4,155	1,739	802	391	69	47	299	343
14	Suns	0	18	NBA Finals	248.3	105.2	41.6	21.2	7.7	5.1	40.5	87.6	46.3	7.8	19.5	39.7	19.0	24.1	79.0	53.6	11.1	30.4	15.5	4,470	1,893	748	382	138	91	279	416
15	Trail Blazers	1	17	NBA Finals	242.9	103.4	45.5	23.3	8.6	4.5	39.2	85.2	46.1	1.9	9.0	21.2	23.7	31.5	75.2	52.2	13.6	31.9	19.6	4,130	1,758	773	396	147	77	333	486
16	Thunder	1	23	NBA Finals	242.2	96.6	43.1	18.2	6.5	5.6	36.8	83.0	44.3	5.8	18.8	30.9	20.3	26.8	75.6	51.0	13.4	29.7	15.3	5,570	2,222	991	419	150	129	353	580
17	Rockets	2	23	NBA Finals	241.1	95.3	42.7	22.7	8.3	5.7	36.5	85.2	42.8	3.6	10.5	34.0	18.7	25.4	73.7	49.4	14.8	27.9	13.6	5,545	2,191	982	522	191	130	312	486
18	Bulls	6	35	NBA Finals	244.3	96.7	39.8	23.4	8.4	4.9	37.2	80.1	46.5	4.7	14.1	33.1	17.6	24.1	73.0	53.3	12.6	27.2	12.7	8,550	3,384	1,393	819	295	173	444	818
19	Magic	0	9	NBA Finals	248.3	98.2	41.7	22.4	5.7	5.6	36.0	80.7	44.6	8.8	25.9	33.9	17.4	25.3	68.9	53.5	9.6	32.1	14.9	2,235	884	375	202	51	50	134	207
20	Jazz	0	12	NBA Finals	242.1	83.7	39.4	20.8	6.8	3.0	31.3	71.8	43.7	4.0	12.1	33.1	17.0	22.8	74.7	51.2	10.1	29.3	14.6	2,905	1,004	473	249	82	36	175	287
21	Spurs	5	34	NBA Finals	241.5	91.3	42.0	19.1	6.6	5.6	33.2	73.4	45.3	7.1	18.0	39.4	17.8	24.6	72.1	54.2	10.5	31.4	14.4	8,210	3,103	1,427	648	224	189	491	654
22	Pacers	0	6	NBA Finals	244.2	106.7	41.2	20.2	5.5	4.3	36.3	78.5	46.3	8.2	19.3	42.2	25.8	30.3	85.2	58.1	8.7	32.5	10.8	1,465	640	247	121	33	26	65	159
23	Nets	0	10	NBA Finals	240.0	87.9	41.1	18.6	8.5	5.6	33.7	84.7	39.8	4.1	14.2	28.9	16.4	22.2	73.9	46.5	14.6	26.5	12.7	2,400	879	411	186	85	56	127	250
24	Mavericks	1	17	NBA Finals	241.5	95.0	40.8	16.9	6.8	3.2	34.6	77.9	44.4	7.8	23.1	33.7	18.1	23.8	76.0	53.8	9.5	31.2	13.0	4,105	1,615	693	288	116	55	221	369
25	Heat	3	40	NBA Finals	241.3	96.7	38.7	19.8	7.3	3.9	35.2	77.8	45.3	8.9	23.9	37.3	17.3	23.3	74.5	54.9	9.0	29.7	12.4	9,650	3,867	1,547	792	290	156	496	850