The Boston Celtics have lost 34 times in game fives all-time.

Interpreted as:

celtics game 5 after losing game 4 or more

	TEAM	DATE	L	TM		OPP	RESULT	MIN	PTS	REB	AST	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	TS%	PF
1	Celtics	4/9/1957	0	BOS	vs	STL	W 124-109	240	124	70	33	49	106	46.2				26	39	66.7	50.3	33
2	Celtics	3/27/1958	0	BOS	vs	PHI	W 93-88	240	93	73	13	39	111	35.1				15	16	93.8	39.4	21
3	Celtics	4/9/1958	1	BOS	vs	STL	L 100-102	240	100	66	18	32	106	30.2				36	50	72.0	39.1	35
4	Celtics	3/28/1959	0	BOS	vs	SYR	W 129-108	240	129	82	26	51	129	39.5				27	29	93.1	45.5	26
5	Celtics	3/22/1960	1	BOS	vs	PHI	L 107-128	240	107	89	19	40	135	29.6				27	33	81.8	35.8	24
6	Celtics	4/5/1960	0	BOS	vs	STL	W 127-102	240	127	72	25	55	122	45.1				17	24	70.8	47.9	22
7	Celtics	3/26/1961	0	BOS	vs	SYR	W 123-101	240	123	76	25	46	100	46.0				31	42	73.8	51.9	30
8	Celtics	4/11/1961	0	BOS	vs	STL	W 121-112	240	121	81	28	45	102	44.1				31	41	75.6	50.4	31
9	Celtics	4/1/1962	0	BOS	vs	PHI	W 119-104	240	119	81	28	48	115	41.7				23	34	67.6	45.8	33
10	Celtics	4/14/1962	1	BOS	vs	LAL	L 121-126	240	121	65	28	48	112	42.9				25	27	92.6	48.8	30
11	Celtics	4/6/1963	0	BOS	vs	CIN	W 125-120	240	125	69	29	47	105	44.8				31	40	77.5	51.0	33
12	Celtics	4/21/1963	1	BOS	vs	LAL	L 119-126	240	119	67	22	43	108	39.8				33	39	84.6	47.5	29
13	Celtics	4/9/1964	0	BOS	vs	CIN	W 109-95	240	109	66	25	42	103	40.8				25	33	75.8	46.4	24
14	Celtics	4/26/1964	0	BOS	vs	SFW	W 105-99	240	105	57	27	42	96	43.8				21	29	72.4	48.3	31
15	Celtics	4/11/1965	0	BOS	vs	PHI	W 114-108	240	114	66	25	41	96	42.7				32	39	82.1	50.4	30
16	Celtics	4/25/1965	0	BOS	vs	LAL	W 129-96	240	129	71	24	55	115	47.8				19	24	79.2	51.4	24
17	Celtics	4/1/1966	0	BOS	vs	CIN	W 112-103	240	112	63	25	49	98	50.0				14	26	53.8	51.2	24
18	Celtics	4/12/1966	0	BOS	@	PHI	W 120-112	240	120	70	19	44	104	42.3				32	44	72.7	48.6	31
19	Celtics	4/24/1966	1	BOS	vs	LAL	L 117-121	240	117	57	21	45	107	42.1				27	31	87.1	48.5	29
20	Celtics	4/11/1967	1	BOS	@	PHI	L 116-140	240	116	55	24	49	118	41.5				18	23	78.3	45.3	38
21	Celtics	3/31/1968	0	BOS	vs	DET	W 110-96	240	110	59	30	44	104	42.3				22	32	68.8	46.6	24
22	Celtics	4/15/1968	0	BOS	@	PHI	W 122-104	240	122	61	28	48	108	44.4				26	38	68.4	48.9	28
23	Celtics	4/30/1968	0	BOS	vs	LAL	W 120-117	265	120	60	24	45	106	42.5				30	42	71.4	48.2	29
24	Celtics	4/4/1969	0	BOS	@	PHI	W 93-90	240	93	56	20	33	80	41.3				27	34	79.4	49.0	26
25	Celtics	4/14/1969	1	BOS	@	NYK	L 104-112	240	104	40	26	42	80	52.5				20	29	69.0	56.1	26
	Average		0.3					242.2	108.3	49.6	24.1	40.9	90.2	45.3	6.9	19.5	35.4	22.2	28.5	78.0	52.7	24.4
	Total		34					24,945	11,155	5,110	2,482	4,213	9,295	45.3	441	1,246	35.4	2,288	2,933	78.0	52.7	2,511