The Cleveland Cavaliers blocked their most shots in a game versus the Knicks on January 7, 1989, with 21 blocks.

nba record for most blocks in a game by the cavs

Interpreted as:

NBA record for most blocks in a regular-season game by the cavs

TEAM	BLK	DATE	TM		OPP	RESULT	MIN	PTS	REB	AST	STL	TOV	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	PF
Cleveland Cavaliers	21	1/7/1989	CLE	vs	NYK	W 104-96	240	104	50	27	5	24	40	80	50.0	2	5	40.0	22	34	64.7	14
Cleveland Cavaliers	17	11/15/2003	CLE	vs	PHI	W 91-88	265	91	57	24	4	18	38	87	43.7	1	8	12.5	14	20	70.0	24
Cleveland Cavaliers	17	11/27/1991	CLE	vs	PHI	W 107-97	240	107	50	36	6	11	42	87	48.3	3	8	37.5	20	24	83.3	15
Cleveland Cavaliers	17	2/15/1989	CLE	vs	NYK	W 129-107	240	129	51	36	9	18	52	86	60.5	3	9	33.3	22	37	59.5	19
Cleveland Cavaliers	16	12/26/2001	CLE	vs	NJN	L 89-91	240	89	54	23	11	9	36	96	37.5	5	17	29.4	12	18	66.7	18
Cleveland Cavaliers	16	12/30/1991	CLE	vs	HOU	W 121-89	240	121	47	42	4	12	50	90	55.6	6	14	42.9	15	18	83.3	15
Cleveland Cavaliers	16	2/3/1988	CLE	@	WAS	W 107-106	240	107	36	34	7	15	46	86	53.5	1	3	33.3	14	21	66.7	22
Cleveland Cavaliers	15	11/6/1992	CLE	vs	CHI	L 96-101	240	96	49	18	6	11	36	91	39.6	3	8	37.5	21	26	80.8	19
Cleveland Cavaliers	15	4/10/1992	CLE	@	NJN	L 86-110	240	86	38	12	9	12	32	88	36.4	2	10	20.0	20	25	80.0	13
Cleveland Cavaliers	15	1/6/1988	CLE	vs	LAC	W 116-100	240	116	42	25	13	16	48	91	52.7	1	1	100.0	19	24	79.2	17
Cleveland Cavaliers	14	12/1/2021	CLE	@	MIA	W 111-85	240	111	46	27	8	20	37	68	54.4	16	31	51.6	21	23	91.3	15
Cleveland Cavaliers	14	12/21/1991	CLE	vs	CHA	W 120-111	240	120	38	33	6	15	50	88	56.8	3	5	60.0	17	24	70.8	16
Cleveland Cavaliers	14	11/6/1990	CLE	@	ORL	W 102-95	240	102	46	29	9	22	39	80	48.8	2	9	22.2	22	31	71.0	26
Cleveland Cavaliers	14	2/23/1990	CLE	vs	ORL	W 123-96	240	123	56	39	9	14	46	95	48.4	4	10	40.0	27	32	84.4	15
Cleveland Cavaliers	14	3/9/1989	CLE	@	GSW	L 114-120	240	114	46	22	12	23	41	90	45.6	7	10	70.0	25	35	71.4	25
Cleveland Cavaliers	14	12/4/1988	CLE	vs	DEN	W 122-103	240	122	45	32	5	15	50	89	56.2	1	4	25.0	21	31	67.7	20
Cleveland Cavaliers	14	2/1/1988	CLE	vs	DET	W 94-83	240	94	47	25	7	12	38	82	46.3	0	3	0.0	18	29	62.1	18
Cleveland Cavaliers	14	2/16/1987	CLE	vs	SEA	W 105-94	240	105	42	24	9	16	40	79	50.6	0	1	0.0	25	34	73.5	20
Cleveland Cavaliers	14	2/10/1977	CLE	vs	IND	W 116-101	240	116	49	28	4	15	43	87	49.4				30	44	68.2	27
Cleveland Cavaliers	13	2/8/2024	CLE	@	BKN	W 118-95	240	118	48	26	8	15	43	80	53.8	15	37	40.5	17	17	100.0	18
Cleveland Cavaliers	13	11/4/2022	CLE	@	DET	W 112-88	240	112	47	30	5	18	44	81	54.3	11	26	42.3	13	16	81.3	15
Cleveland Cavaliers	13	12/4/2013	CLE	vs	DEN	W 98-88	240	98	58	20	6	12	37	91	40.7	5	14	35.7	19	24	79.2	10
Cleveland Cavaliers	13	3/16/2004	CLE	vs	CHI	W 111-87	240	111	57	29	13	20	42	93	45.2	8	13	61.5	19	29	65.5	15
Cleveland Cavaliers	13	4/5/2003	CLE	vs	NOH	W 79-76	240	79	48	25	3	16	34	91	37.4	1	6	16.7	10	15	66.7	18
Cleveland Cavaliers	13	2/11/2003	CLE	@	IND	L 96-107	240	96	47	26	4	21	37	75	49.3	6	10	60.0	16	23	69.6	21