Dikembe Mutombo is the oldest in a game with 18+ rebounds. He was 40 years and 250 days old against the Nuggets on March 2, 2007.

Interpreted as:

oldest NBA player with 18 or more rebounds in a regular-season game

	NAME	AGE	REB	DATE	TM		OPP	MIN	PTS	AST	STL	BLK	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	TS%	OREB	DREB	TOV	PF	+/-
1	Dikembe Mutombo D. Mutombo	40-250	22	3/2/2007	HOU	@	DEN	33	5	1	0	1	1	5	20.0	0	0		3	4	75.0	37.0	8	14	0	3	+14
2	Dikembe Mutombo D. Mutombo	40-202	18	1/13/2007	HOU	@	SAC	39	11	0	0	0	2	4	50.0	0	0		7	8	87.5	73.1	5	13	2	5	+15
3	Dikembe Mutombo D. Mutombo	40-199	19	1/10/2007	HOU	vs	LAL	34	7	0	0	5	3	6	50.0	0	0		1	2	50.0	50.9	7	12	0	3	+17
4	Dikembe Mutombo D. Mutombo	40-194	19	1/5/2007	HOU	vs	UTA	36	9	2	2	1	3	4	75.0	0	0		3	4	75.0	78.1	8	11	0	5	+16
5	Karl Malone K. Malone	40-120	18	11/21/2003	LAL	vs	CHI	40	14	3	1	1	5	11	45.5	0	0		4	6	66.7	51.3	5	13	2	3	+8
6	Karl Malone K. Malone	40-105	19	11/6/2003	LAL	@	SAS	42	15	5	1	0	6	17	35.3	0	0		3	6	50.0	38.2	5	14	2	6	-2
7	Tim Duncan T. Duncan	39-217	18	11/28/2015	SAS	vs	ATL	28	10	4	1	2	5	9	55.6	0	0		0	0		55.6	5	13	1	3	+24
8	Dikembe Mutombo D. Mutombo	39-200	18	1/11/2006	HOU	vs	SAC	34	8	0	2	0	3	5	60.0	0	0		2	3	66.7	63.3	7	11	2	2	-10
9	Robert Parish R. Parish	39-143	19	1/20/1993	BOS	vs	ATL	22	13	1	1	3	6	14	42.9	0	0		1	2	50.0	43.7	8	11	1	1
10	LeBron James L. James	39-028	20	1/27/2024	LAL	@	GSW	48	36	12	0	0	14	25	56.0	2	4	50.0	6	6	100.0	65.1	1	19	3	2	-6
11	Hakeem Olajuwon H. Olajuwon	38-303	20	11/20/2001	TOR	vs	DET	43	14	2	1	5	6	11	54.5	0	0		2	2	100.0	58.9	5	15	1	3	-3
12	Dennis Rodman D. Rodman	38-296	19	3/4/2000	DAL	@	PHX	36	6	0	1	0	3	5	60.0	0	0		0	2	0.0	51.0	8	11	5	3	-22
13	Dennis Rodman D. Rodman	38-294	21	3/2/2000	DAL	vs	NJN	33	4	0	0	0	2	6	33.3	0	0		0	0		33.3	7	14	1	0	+6
14	Dennis Rodman D. Rodman	38-284	18	2/21/2000	DAL	@	IND	34	2	2	0	0	1	5	20.0	0	0		0	0		20.0	6	12	0	3	-8
15	Robert Parish R. Parish	38-233	19	4/19/1992	BOS	vs	MIA	38	22	1	2	0	8	14	57.1	0	0		6	6	100.0	66.1	8	11	2	3
16	Tim Duncan T. Duncan	38-231	18	12/12/2014	SAS	vs	LAL	40	19	2	0	2	9	16	56.3	0	0		1	2	50.0	56.3	7	11	4	3	+13
17	Kevin Willis K. Willis	38-224	19	4/18/2001	DEN	vs	SAC	41	25	0	4	3	12	26	46.2	0	0		1	1	100.0	47.3	7	12	3	2	+15
18	Kevin Willis K. Willis	38-216	20	4/10/2001	DEN	@	HOU	41	17	1	1	1	8	21	38.1	0	0		1	1	100.0	39.6	6	14	1	3	+14
19	Kevin Willis K. Willis	38-209	18	4/3/2001	DEN	vs	POR	36	19	4	2	1	8	25	32.0	0	0		3	4	75.0	35.5	10	8	4	2	+3
20	Patrick Ewing P. Ewing	38-175	18	1/27/2001	SEA	vs	NJN	29	18	1	1	4	6	13	46.2	0	0		6	6	100.0	57.5	1	17	1	4	+17
21	Kurt Thomas K. Thomas	38-102	18	1/14/2011	CHI	@	IND	34	4	1	0	1	2	5	40.0	0	0		0	0		40.0	4	14	0	3	+9
22	Hakeem Olajuwon H. Olajuwon	38-023	20	2/13/2001	HOU	vs	WAS	34	15	1	4	3	6	13	46.2	0	0		3	4	75.0	50.8	5	15	3	5	+14
23	Marcus Camby M. Camby	38-022	18	4/13/2012	HOU	vs	PHX	31	14	4	2	3	7	16	43.8	0	1	0.0	0	0		43.8	6	12	0	0	-7
24	Marcus Camby M. Camby	37-319	20	2/4/2012	POR	vs	DEN	30	4	2	2	2	2	6	33.3	0	0		0	0		33.3	7	13	2	3	+10
25	Marcus Camby M. Camby	37-311	20	1/27/2012	POR	vs	PHX	24	0	3	2	2	0	4	0.0	0	0		0	0		0.0	2	18	1	2	+21