celtics most blocks by a player in a playoff game after 1999

Since 1999-00, Robert Williams III has blocked the most shots for the Celtics in a playoff game, with 9 blocks in Game 1 of the 2021 First Round against the Nets.

	NAME	BLK	DATE	TM		OPP	MIN	PTS	REB	AST	STL	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	TS%	OREB	DREB	TOV	PF	+/-
1	Robert Williams III R. Williams III	9	5/22/2021	BOS	@	BKN	23	11	9	1	1	5	8	62.5	0	0		1	2	50.0	61.9	5	4	0	2	+5
2	Luke Kornet L. Kornet	7	5/14/2025	BOS	vs	NYK	26	10	9	1	1	5	5	100.0	0	0		0	0		100.0	2	7	0	4	+20
3	Kendrick Perkins K. Perkins	7	4/28/2009	BOS	vs	CHI	48	16	19	2	1	7	13	53.8	0	0		2	4	50.0	54.2	3	16	2	0	-2
4	Al Horford A. Horford	5	4/27/2025	BOS	@	ORL	35	6	6	2	0	2	7	28.6	0	3	0.0	2	2	100.0	38.1	2	4	1	0	+2
5	Al Horford A. Horford	5	5/7/2023	BOS	@	PHI	38	10	7	4	2	3	9	33.3	2	7	28.6	2	2	100.0	50.6	2	5	0	3	0
6	Al Horford A. Horford	5	4/25/2023	BOS	vs	ATL	33	3	6	5	1	1	5	20.0	1	3	33.3	0	0		30.0	1	5	1	2	+1
7	Robert Williams III R. Williams III	5	6/16/2022	BOS	vs	GSW	33	10	7	2	0	4	8	50.0	0	0		2	2	100.0	56.3	5	2	2	2	-1
8	Kevin Garnett K. Garnett	5	6/3/2012	BOS	vs	MIA	43	17	14	3	2	8	20	40.0	0	1	0.0	1	1	100.0	41.6	3	11	5	3	+7
9	Kevin Garnett K. Garnett	5	5/10/2012	BOS	vs	ATL	39	28	14	2	3	10	19	52.6	0	0		8	10	80.0	59.8	4	10	1	1	+9
10	Kendrick Perkins K. Perkins	5	5/10/2009	BOS	@	ORL	40	12	13	2	1	5	7	71.4	0	0		2	2	100.0	76.1	3	10	1	3	+5
11	Kendrick Perkins K. Perkins	5	5/4/2008	BOS	vs	ATL	27	10	10	0	0	4	8	50.0	0	0		2	2	100.0	56.3	2	8	0	3	+31
12	Paul Pierce P. Pierce	5	4/30/2005	BOS	@	IND	40	30	7	8	1	10	15	66.7	1	2	50.0	9	11	81.8	75.6	0	7	1	2	+32
13	Tony Battie T. Battie	5	5/21/2002	BOS	@	NJN	26	8	12	0	0	4	9	44.4	0	0		0	2	0.0	40.5	7	5	1	4	+13
14	Derrick White D. White	4	5/25/2024	BOS	@	IND	35	13	5	7	0	3	11	27.3	2	8	25.0	5	6	83.3	47.7	1	4	0	4	+4
15	Jayson Tatum J. Tatum	4	5/7/2023	BOS	@	PHI	47	24	18	6	1	9	20	45.0	1	6	16.7	5	7	71.4	52.0	4	14	2	3	+2
16	Robert Williams III R. Williams III	4	6/8/2022	BOS	vs	GSW	26	8	10	0	3	4	5	80.0	0	0		0	0		80.0	3	7	0	3	+21
17	Robert Williams III R. Williams III	4	6/2/2022	BOS	@	GSW	24	8	6	0	1	4	4	100.0	0	0		0	0		100.0	2	4	2	1	-1
18	Al Horford A. Horford	4	5/23/2022	BOS	vs	MIA	33	5	13	3	0	1	2	50.0	1	1	100.0	2	2	100.0	86.8	2	11	0	2	+33
19	Al Horford A. Horford	4	5/13/2022	BOS	@	MIL	38	2	10	3	1	1	6	16.7	0	4	0.0	0	0		16.7	2	8	1	1	+9
20	Jayson Tatum J. Tatum	4	5/7/2022	BOS	@	MIL	41	10	1	3	1	4	19	21.1	0	6	0.0	2	3	66.7	24.6	0	1	3	1	-5
21	Tristan Thompson T. Thompson	4	6/1/2021	BOS	@	BKN	30	9	9	1	0	1	4	25.0	0	0		7	8	87.5	59.8	4	5	0	3	-17
22	Jaylen Brown J. Brown	4	9/3/2020	BOS	vs	TOR	40	19	12	2	0	9	15	60.0	0	2	0.0	1	2	50.0	59.8	0	12	4	1	-6
23	Jayson Tatum J. Tatum	4	8/21/2020	BOS	@	PHI	32	15	6	0	1	6	19	31.6	2	9	22.2	1	2	50.0	37.7	1	5	1	4	+9
24	Kevin Garnett K. Garnett	4	5/4/2012	BOS	vs	ATL	42	20	13	1	1	9	18	50.0	0	0		2	2	100.0	53.0	2	11	1	3	+11
25	Jermaine O'Neal J. O'Neal	4	4/17/2011	BOS	vs	NYK	23	12	4	0	0	6	6	100.0	0	0		0	0		100.0	3	1	2	5	-11