Dirk Nowitzki got his most boards in a game against the Celtics on February 21, 2002, with 23 rebounds.

Interpreted as:

Dirk Nowitzki most rebounds in a regular-season game

	NAME	REB	DATE	TM		OPP	MIN	PTS	AST	STL	BLK	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	TS%	OREB	DREB	TOV	PF	+/-
1	Dirk Nowitzki D. Nowitzki	23	2/21/2002	DAL	vs	BOS	45	33	8	1	4	12	23	52.2	3	6	50.0	6	6	100.0	64.4	5	18	3	2	+1
2	Dirk Nowitzki D. Nowitzki	22	4/3/2003	DAL	vs	LAL	47	25	2	1	0	7	21	33.3	1	6	16.7	10	10	100.0	49.2	3	19	3	4	-10
3	Dirk Nowitzki D. Nowitzki	21	4/6/2002	DAL	@	SAS	47	26	3	1	0	11	21	52.4	1	5	20.0	3	4	75.0	57.1	3	18	1	3	+1
4	Dirk Nowitzki D. Nowitzki	21	2/23/2002	DAL	vs	SAC	43	26	3	1	2	8	16	50.0	1	3	33.3	9	11	81.8	62.4	0	21	3	4	+20
5	Dirk Nowitzki D. Nowitzki	20	2/26/2013	DAL	vs	MIL	35	21	3	2	0	8	16	50.0	1	3	33.3	4	4	100.0	59.1	3	17	3	1	-8
6	Dirk Nowitzki D. Nowitzki	20	12/27/2007	DAL	vs	CLE	40	19	1	0	1	6	17	35.3	0	2	0.0	7	8	87.5	46.3	4	16	1	1	-4
7	Dirk Nowitzki D. Nowitzki	20	3/5/2002	DAL	vs	PHX	41	30	2	3	0	11	25	44.0	0	3	0.0	8	9	88.9	51.8	1	19	8	3	+9
8	Dirk Nowitzki D. Nowitzki	19	3/20/2008	DAL	vs	BOS	38	22	1	0	2	8	20	40.0	0	3	0.0	6	6	100.0	48.6	0	19	6	1	+2
9	Dirk Nowitzki D. Nowitzki	18	11/27/2004	DAL	@	MEM	40	32	2	3	1	10	27	37.0	0	4	0.0	12	13	92.3	48.9	3	15	2	3	+7
10	Dirk Nowitzki D. Nowitzki	18	3/30/2004	DAL	vs	CLE	42	35	4	1	1	14	23	60.9	1	2	50.0	6	6	100.0	68.3	2	16	1	3	+19
11	Dirk Nowitzki D. Nowitzki	18	3/16/2003	DAL	@	SAC	50	34	4	0	2	10	23	43.5	6	10	60.0	8	8	100.0	64.1	1	17	2	3	+11
12	Dirk Nowitzki D. Nowitzki	17	1/29/2014	DAL	vs	HOU	35	38	3	0	0	13	21	61.9	1	3	33.3	11	11	100.0	73.5	4	13	2	1	+6
13	Dirk Nowitzki D. Nowitzki	17	12/27/2003	DAL	vs	MEM	42	18	4	0	0	6	10	60.0	2	3	66.7	4	4	100.0	76.5	2	15	4	3	+11
14	Dirk Nowitzki D. Nowitzki	17	12/23/2002	DAL	vs	WAS	48	30	2	2	0	9	23	39.1	0	2	0.0	12	14	85.7	51.4	5	12	0	1	+6
15	Dirk Nowitzki D. Nowitzki	17	12/20/2002	DAL	vs	UTA	48	28	1	4	0	7	18	38.9	1	6	16.7	13	15	86.7	56.9	2	15	0	4	-12
16	Dirk Nowitzki D. Nowitzki	17	11/19/2002	DAL	vs	LAL	35	18	0	0	0	7	19	36.8	1	3	33.3	3	4	75.0	43.4	2	15	2	4	+21
17	Dirk Nowitzki D. Nowitzki	17	11/11/2002	DAL	vs	POR	43	26	4	6	0	9	22	40.9	4	8	50.0	4	4	100.0	54.7	1	16	1	3	+11
18	Dirk Nowitzki D. Nowitzki	17	2/5/2002	DAL	@	IND	53	38	1	3	0	10	22	45.5	4	8	50.0	14	15	93.3	66.4	2	15	5	3	+4
19	Dirk Nowitzki D. Nowitzki	17	1/18/2001	DAL	vs	ORL	47	38	3	1	2	12	26	46.2	1	6	16.7	13	16	81.3	57.5	7	10	5	5	+15
20	Dirk Nowitzki D. Nowitzki	17	3/27/2000	DAL	@	UTA	47	16	8	1	3	6	11	54.5	3	6	50.0	1	1	100.0	69.9	2	15	4	2	+9
21	Dirk Nowitzki D. Nowitzki	16	2/20/2012	DAL	vs	BOS	30	26	1	1	2	10	24	41.7	1	3	33.3	5	5	100.0	49.6	2	14	1	1	+27
22	Dirk Nowitzki D. Nowitzki	16	1/13/2010	DAL	vs	LAL	43	30	2	0	1	11	22	50.0	1	1	100.0	7	7	100.0	59.8	0	16	0	3	-2
23	Dirk Nowitzki D. Nowitzki	16	3/14/2007	DAL	vs	PHX	57	30	6	0	1	11	28	39.3	0	2	0.0	8	12	66.7	45.1	4	12	3	2	+2
24	Dirk Nowitzki D. Nowitzki	16	11/11/2005	DAL	@	CHA	40	23	4	2	0	9	22	40.9	1	5	20.0	4	5	80.0	47.5	1	15	3	2	+12
25	Dirk Nowitzki D. Nowitzki	16	2/26/2005	DAL	vs	PHX	41	26	5	4	1	8	18	44.4	1	1	100.0	9	12	75.0	55.8	4	12	1	3	-3