Doc Rivers has the most games by a coach in game sevens, with 16 games.

COACH	GP	MPG	PPG	RPG	APG	SPG	BPG	TPG	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	MIN	PTS	REB	AST	STL	BLK	TOV	PF
Doc Rivers	16	240.0	93.9	40.0	20.4	7.4	5.6	12.5	34.5	78.6	43.9	6.8	22.4	30.2	18.2	23.1	78.6	3,840	1,503	640	326	119	90	200	359
Pat Riley	11	240.0	96.4	41.3	22.5	7.0	4.9	13.1	36.0	78.5	45.9	4.6	14.0	33.1	19.7	27.5	71.6	2,640	1,060	454	247	77	54	144	259
Larry Brown	10	242.5	93.7	41.4	22.1	7.3	4.5	11.1	35.8	81.6	43.9	4.2	11.8	35.8	18.3	25.2	72.6	2,425	937	414	221	73	45	111	234
Phil Jackson	9	242.8	90.2	46.1	18.2	6.4	4.6	11.9	32.9	80.0	41.1	4.9	16.4	29.7	19.6	27.9	70.1	2,185	812	415	164	58	41	107	202
Erik Spoelstra	8	240.0	95.9	42.1	17.3	6.4	5.3	12.3	35.3	78.4	45.0	8.4	25.0	33.5	17.0	21.9	77.7	1,920	767	337	138	51	42	98	155
K.C. Jones	8	240.0	108.4	45.0	22.8				40.1	82.4	48.7	1.6	4.8	33.3	27.1	33.5	81.0	1,920	867	360	182				180
Red Auerbach	8	249.4	117.9	73.1	23.0				44.8	113.8	39.3				28.4	37.8	75.2	1,995	943	585	184				254
Gregg Popovich	7	243.6	97.9	42.4	18.3	6.7	5.3	11.1	34.6	78.6	44.0	8.1	21.3	38.3	20.6	24.9	82.8	1,705	685	297	128	47	37	78	147
George Karl	7	243.6	96.6	42.4	21.9	5.1	6.1	14.6	34.7	78.3	44.3	5.9	17.3	33.9	21.3	26.3	81.0	1,705	676	297	153	36	43	102	177
Don Nelson	7	240.0	106.7	39.4	23.1	8.0	7.1	12.4	41.3	88.7	46.5	4.0	10.3	38.7	20.7	25.6	81.0	1,680	747	276	162	56	50	87	176
Dick Motta	7	240.0	96.7	49.1	21.0				38.1	92.7	41.1				20.4	26.9	76.1	1,680	677	344	147				165
Rudy Tomjanovich	5	245.0	101.0	37.4	24.6	7.8	4.2	11.4	37.6	77.2	48.7	5.6	16.8	33.3	20.2	27.4	73.7	1,225	505	187	123	39	21	57	126
Rick Adelman	5	250.0	92.6	46.2	22.8	8.4	5.0	12.4	35.2	87.4	40.3	5.6	19.6	28.6	16.6	25.0	66.4	1,250	463	231	114	42	25	62	116
Lenny Wilkens	5	240.0	104.0	45.8	23.2	7.0	8.2	14.4	40.0	84.6	47.3	2.3	8.3	28.0	22.6	30.2	74.8	1,200	520	229	116	35	41	72	120
Red Holzman	5	240.0	103.2	46.2	22.6				42.0	90.0	46.7				19.2	24.4	78.7	1,200	516	231	113				116
Fred Schaus	5	245.0	109.6	56.8					40.0	94.6	42.3				29.6	39.6	74.7	1,225	548	284					132
Michael Malone	4	240.0	92.5	50.8	19.8	3.8	6.5	10.3	34.3	84.3	40.7	6.3	26.8	23.4	17.8	22.8	78.0	960	370	203	79	15	26	41	80
Brad Stevens	4	240.0	99.5	39.8	23.0	8.5	3.3	9.3	37.8	83.5	45.2	9.0	31.8	28.3	15.0	22.0	68.2	960	398	159	92	34	13	37	83
Tyronn Lue	4	240.0	102.8	42.0	20.0	6.5	4.0	10.8	34.0	76.0	44.7	11.3	33.0	34.1	23.5	28.5	82.5	960	411	168	80	26	16	43	78
Steve Kerr	4	240.0	101.5	45.5	23.0	6.0	5.5	11.0	37.8	87.0	43.4	15.8	40.8	38.7	10.3	16.3	63.1	960	406	182	92	24	22	44	84
Mike Brown	4	240.0	87.3	41.0	16.3	5.5	5.5	11.3	30.3	79.3	38.2	7.8	26.3	29.5	19.0	28.0	67.9	960	349	164	65	22	22	45	99
Mike D'Antoni	4	240.0	111.0	39.3	22.8	8.5	4.0	11.5	41.5	83.8	49.6	12.3	35.3	34.8	15.8	19.5	80.8	960	444	157	91	34	16	46	76
Rick Carlisle	4	240.0	103.0	40.3	23.5	7.8	4.5	12.5	38.3	80.3	47.7	9.3	24.3	38.1	17.3	22.5	76.7	960	412	161	94	31	18	50	81
Jeff Van Gundy	4	240.0	87.0	38.3	18.5	5.8	6.3	11.5	31.5	76.8	41.0	4.8	18.0	26.4	19.3	23.8	81.1	960	348	153	74	23	25	46	90
Billy Cunningham	4	240.0	104.3	40.8	26.3	7.3	9.5	17.5	40.0	82.8	48.3	0.3	0.7	50.0	24.0	30.5	78.7	960	417	163	105	29	38	70	109