Lenny Wilkens has the most games by a coach, with 2,487 games.

Interpreted as:

most regular-season games coaches

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
Lenny Wilkens	2,487	241.5	102.8	44.4	24.0				39.8			3.1			20.7	27.6	75.2	600,505	255,733	110,457	59,687				55,022
Don Nelson	2,398	241.7	108.2						41.8			4.2			20.9	27.4	76.3	579,595	259,574						57,689
Gregg Popovich	2,209	241.6	101.6	43.1	23.2	7.3	5.5	13.3	38.3	82.1	46.7	7.6	20.5	36.9	17.4	23.2	75.1	533,785	224,450	95,232	51,174	16,105	12,249	29,434	42,288
Bill Fitch	2,050	241.3	104.9	45.0	23.9				41.9			2.3			19.7	26.6	74.1	494,750	214,960	92,158	48,916				49,383
Jerry Sloan	2,024	241.6	101.3	41.8	25.2	8.2	5.3		37.9	79.0	48.0	3.1	9.0	34.8	22.4	29.4	76.3	488,910	205,077	84,581	51,046	16,672	10,714		48,925
Larry Brown	2,002	241.6	99.9						38.1			2.9			21.2	28.6	73.9	483,755	200,029						46,943
George Karl	1,999	241.6	104.8	42.1	23.7	9.1	5.0	14.8	39.3	83.3	47.1	5.4	14.9	36.0	20.9	27.7	75.6	483,035	209,431	84,105	47,422	18,189	9,952	29,663	46,119
Dick Motta	1,952	241.7	106.5						41.6			2.7			21.7	28.8	75.4	471,705	207,824						45,399
Pat Riley	1,904	241.5	102.5	43.0	24.8				39.6	82.4	48.0	3.9			19.5	26.1	74.7	459,910	195,149	81,888	47,314				44,062
Doc Rivers	1,895	241.8	103.7	42.0	22.8	8.0	4.9	13.9	38.2	81.9	46.6	8.0	21.9	36.8	19.3	25.4	76.0	458,150	196,512	79,603	43,197	15,076	9,294	26,395	41,555
Rick Adelman	1,791	242.0	104.0	44.0	23.6	8.4	4.6	14.5	39.0	85.4	45.7	5.8	16.4	35.2	20.2	26.6	76.1	433,440	186,184	78,849	42,238	15,057	8,282	25,962	37,464
Rick Carlisle	1,771	241.8	102.8	42.0	22.7	7.4	5.0	13.1	37.9	83.1	45.6	9.3	25.9	35.8	17.7	22.7	77.7	428,140	182,043	74,339	40,282	13,132	8,770	23,150	36,137
Jack Ramsay	1,647	241.3	110.5						43.9			0.7	2.7	26.6	22.5	29.9	75.0	397,380	181,984						41,578
Gene Shue	1,645	241.5	107.4						42.9			1.1			21.1	28.4	74.3	397,300	176,743						39,513
Phil Jackson	1,640	241.8	103.1	43.7	24.1	8.4	5.0	13.6	39.5	83.7	47.2	5.1	14.4	35.6	19.0	25.7	73.7	396,550	169,073	71,619	39,569	13,721	8,254	22,328	35,442
Cotton Fitzsimmons	1,607	241.5	110.7						43.5			1.2			23.0	30.5	75.6	388,155	177,888						40,547
Nate McMillan	1,428	241.6	100.8	41.2	21.9	7.5	4.6	12.8	37.9	82.4	46.0	7.7	21.1	36.7	17.3	22.4	77.3	345,070	143,956	58,877	31,240	10,665	6,575	18,319	29,367
Red Auerbach	1,419	241.6	103.0						38.9						25.2			342,835	146,160
John MacLeod	1,364	241.4	107.9	44.1	26.5				42.8	88.6	48.3	1.1	3.9	28.0	21.6	28.3	76.2	329,235	147,199	60,108	36,193				33,145
Mike Dunleavy	1,329	241.6	97.2	41.4	22.4	7.8	5.1	14.8	36.7	80.2	45.7	4.1	12.2	33.7	19.7	26.1	75.7	321,085	129,171	54,975	29,708	10,429	6,762	19,687	29,010
Red Holzman	1,300	241.2	104.9						41.9			0.6			21.0	28.3	74.1	313,520	136,413						32,473
Erik Spoelstra	1,277	241.9	103.5	41.8	22.5	7.7	4.8	13.3	38.3	82.0	46.7	9.5	26.2	36.1	17.5	22.9	76.4	308,955	132,227	53,435	28,790	9,851	6,164	16,948	25,143
Flip Saunders	1,246	241.7	97.1	41.8	23.1	7.3	5.6	13.3	37.2	82.0	45.4	4.5	12.9	35.1	18.1	23.6	76.6	301,190	120,996	52,110	28,797	9,129	6,935	16,559	26,841
Mike Fratello	1,215	241.7	99.6	41.1	22.7	8.4	5.3	14.8	37.6	80.5	46.7	3.3	9.4	35.6	21.0	27.8	75.7	293,725	120,981	49,880	27,613	10,235	6,425	18,024	28,395
Mike D'Antoni	1,199	241.5	107.2	42.1	22.9	7.6	4.9	13.9	39.1	84.7	46.1	10.6	29.0	36.5	18.6	24.0	77.3	289,560	128,582	50,518	27,400	9,165	5,817	16,627	24,529