9 coaches are tied for the worst winning percentage by a coach, winning 0.0 percent of the time. The first three are Tom Barrise, Pete Myers and Bill Berry.

lowest win percentage in nba history by a coach

COACH	W%	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
Tom Barrise	.000	2	240.0	94.0	33.0	19.0	10.5	3.0	15.5	34.0	78.0	43.6	5.5	15.0	36.7	20.5	26.0	78.8	480	188	66	38	21	6	31	32
Pete Myers	.000	3	240.0	91.7	36.3	23.7	4.7	4.7	13.7	39.3	82.3	47.8	4.7	12.7	36.8	8.3	12.0	69.4	720	275	109	71	14	14	41	69
Bill Berry	.000	2	240.0	79.5	45.0	19.0	8.5	4.0	18.0	32.0	80.0	40.0	2.0	5.0	40.0	13.5	22.5	60.0	480	159	90	38	17	8	36	51
Bob Staak	.000	1	240.0	104.0	42.0	22.0	8.0	4.0	17.0	42.0	92.0	45.7	9.0	20.0	45.0	11.0	18.0	61.1	240	104	42	22	8	4	17	22
Mel Daniels	.000	2	240.0	103.0	44.5	16.0	6.0	6.5	18.5	42.0	93.0	45.2	1.5	5.5	27.3	17.5	24.0	72.9	480	206	89	32	12	13	37	54
Draff Young	.000	4	240.0	110.5	49.0	25.3				42.8	97.0	44.1				25.0	33.5	74.6	960	442	196	101				98
Terry Dischinger	.000	2	240.0	90.0	48.5	18.0				36.0	100.5	35.8				18.0	23.5	76.6	480	180	97	36				47
Carl Bennett	.000	6	240.0	73.5						25.3						22.8	34.2	66.8	1,440	441
Lew Hayman	.000	1	240.0	65.0						29.0						7.0			240	65						19
Roy Rubin	.078	51	241.0	102.7						41.6						19.6	26.1	75.1	12,290	5,239						1,216
Albert Soar	.105	19	241.3	70.0						27.3						15.4			4,585	1,330
Jim Todd	.108	37	240.7	92.8	39.7	18.8	7.5	5.4	14.8	35.5	83.3	42.6	5.5	15.8	35.0	16.2	21.3	76.4	8,905	3,432	1,468	696	277	201	548	841
Mike Farmer	.111	9	240.0	106.0						41.8						22.4	30.9	72.7	2,160	954						248
Gene Tormohlen	.125	8	243.1	108.0						45.1						17.8	27.0	65.7	1,945	864						174
Bill Hanzlik	.134	82	240.6	89.0	39.0	18.9	8.1	4.8	14.8	32.6	78.2	41.7	3.5	10.9	32.3	20.2	26.2	77.2	19,730	7,300	3,197	1,547	664	393	1,214	1,937
Nat Hickey	.138	29	240.0	68.6						25.8						16.9			6,960	1,988
Quinn Buckner	.159	82	240.6	95.1	41.7	19.9	9.4	3.6	16.2	37.3	86.2	43.2	2.9	9.4	31.2	17.7	23.7	74.7	19,730	7,801	3,421	1,629	767	299	1,328	2,007
Jimmy Darden	.177	62	240.0	77.7						27.9						21.9	32.0	68.4	14,880	4,818
Kevin Pritchard	.185	27	240.0	94.3	39.8	22.2	7.3	7.5	16.2	35.9	76.8	46.8	4.3	12.6	34.1	18.1	24.6	73.5	6,480	2,545	1,074	599	196	203	438	580
Kiki VanDeWeghe	.188	64	241.6	94.0	39.4	19.7	6.9	4.7	13.0	34.8	80.0	43.6	4.9	14.9	32.8	19.5	24.9	78.0	15,460	6,017	2,519	1,258	443	299	832	1,266
Kenny Natt	.190	58	243.0	101.8	38.8	19.4	6.9	4.3	14.7	36.0	81.3	44.3	8.1	20.5	39.3	21.7	26.9	80.7	14,095	5,903	2,250	1,124	403	250	853	1,349
Brian Winters	.196	184	241.8	92.5	40.7	21.2	8.6	5.1	15.5	35.1	81.5	43.0	4.6	13.9	32.7	17.8	24.7	72.0	44,485	17,016	7,487	3,907	1,584	945	2,851	4,128
Roger Potter	.200	5	255.0	80.4						27.2						26.0	36.8	70.7	1,275	402
Brian Keefe	.205	39	241.3	112.2	42.1	27.9	7.6	4.7	13.7	42.7	92.1	46.3	12.6	36.8	34.1	14.2	18.8	75.5	9,410	4,374	1,640	1,089	295	183	534	776
Ed Gregory	.222	18	240.0	107.9	41.2	24.8	9.1	3.2	17.9	42.5	90.3	47.1	1.7	5.6	31.0	21.2	27.4	77.1	4,320	1,942	741	447	163	58	323	466