Karl Malone has averaged the most career rebounds per game by a 40-year-old player, with 8.7 per game.

Interpreted as:

highest rpg by a player as a 40 year old

	NAME	RPG	GP	MPG	PPG	APG	SPG	BPG	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	TS%	OREB	DREB	TPG	MIN	PTS	REB	AST	STL	BLK	TOV	PF	+/-
1	Karl Malone K. Malone	8.7	42	32.7	13.2	3.9	1.2	0.5	4.6	9.5	48.3	0.0	0.0	0.0	4.0	5.4	74.7	55.5	1.5	7.3	2.5	1,373	554	367	163	50	20	103	116	+219
2	LeBron James L. James	7.8	42	34.8	25.1	7.7	1.1	0.5	9.5	18.2	52.4	2.2	5.7	38.9	3.8	4.8	79.2	61.7	1.1	6.7	3.6	1,463	1,053	326	323	47	22	152	62	+49
3	Robert Parish R. Parish	7.3	74	26.9	11.7	1.1	0.6	1.3	4.8	9.8	49.1	0.0	0.0		2.1	2.8	74.0	53.0	1.9	5.4	1.5	1,987	866	542	82	42	96	108	190
4	Michael Jordan M. Jordan	7.2	30	39.9	22.4	3.4	1.3	0.5	9.5	20.5	46.2	0.1	0.6	22.2	3.3	3.9	83.9	50.3	1.0	6.2	2.2	1,198	671	215	103	39	14	66	59	-40
5	Dikembe Mutombo D. Mutombo	6.5	75	17.2	3.1	0.2	0.3	1.0	1.1	2.0	55.6	0.0	0.0		0.8	1.2	69.0	60.1	2.2	4.3	0.5	1,289	230	488	13	22	76	38	156	+101
6	Kareem Abdul-Jabbar K. Abdul-Jabbar	6.0	78	29.1	14.5	1.7	0.6	1.2	6.0	11.3	52.9	0.0	0.0	0.0	2.5	3.4	75.2	56.7	1.5	4.5	2.0	2,271	1,129	467	132	47	91	157	212
7	Jason Kidd J. Kidd	4.6	14	25.5	3.6	2.6	1.5	0.1	1.3	3.7	34.6	1.1	3.3	32.6	0.0	0.1	0.0	48.6	0.6	4.0	0.6	358	51	65	37	21	2	9	29	+92
8	Udonis Haslem U. Haslem	4.5	2	13.1	5.5	0.0	0.0	0.0	2.5	3.5	71.4	0.5	0.5	100.0	0.0	0.0		78.6	0.5	4.0	0.5	26	11	9	0	0	0	1	3	-2
9	Andre Miller A. Miller	3.3	6	21.3	6.5	3.5	1.0	0.0	2.7	6.5	41.0	0.0	0.5	0.0	1.2	1.8	63.6	44.5	0.8	2.5	1.7	128	39	20	21	6	0	10	9	+31
10	Kevin Willis K. Willis	3.2	71	11.8	4.2	0.3	0.3	0.3	1.7	3.6	47.9	0.0	0.0	0.0	0.7	1.2	61.4	50.6	1.2	2.0	0.8	840	297	226	24	20	20	60	120	-116
11	Dirk Nowitzki D. Nowitzki	3.1	51	15.6	7.3	0.7	0.2	0.4	2.6	7.4	35.9	1.3	4.0	31.2	0.8	1.0	78.0	46.9	0.1	3.0	0.4	795	373	158	35	9	18	18	76	-67
12	John Stockton J. Stockton	2.6	82	28.6	12.0	7.9	1.8	0.2	4.2	8.3	50.4	0.4	0.9	38.2	3.3	3.9	84.1	59.9	0.7	1.9	2.4	2,349	983	212	650	147	19	195	196	+269
13	Clifford Robinson C. Robinson	2.4	43	18.8	3.8	1.0	0.2	0.5	1.5	4.4	34.9	0.5	1.4	37.3	0.3	0.7	39.3	41.0	0.7	1.8	0.6	808	165	105	44	10	21	26	85	-220
14	Vince Carter V. Carter	2.4	62	21.2	6.3	1.6	0.9	0.6	2.1	5.5	39.1	1.3	3.2	39.6	0.8	1.0	78.7	53.4	0.4	2.0	0.6	1,315	392	151	98	53	37	39	119	+48
15	Steve Nash S. Nash	2.4	8	19.1	6.9	6.0	0.5	0.1	2.6	5.3	50.0	0.3	1.1	22.2	1.4	1.5	91.7	58.2	0.3	2.1	2.1	153	55	19	48	4	1	17	7	-28
16	Kurt Thomas K. Thomas	2.3	39	10.1	2.5	0.5	0.3	0.4	1.2	2.1	54.2	0.0	0.0	100.0	0.2	0.3	46.2	54.7	0.6	1.7	0.2	392	97	89	21	10	16	8	52	-22
17	Manu Ginobili M. Ginobili	2.2	65	20.0	8.9	2.5	0.7	0.2	3.1	7.1	43.4	1.0	3.0	33.3	1.7	2.0	84.0	55.3	0.3	1.9	1.6	1,299	576	142	163	43	16	105	126	+72
18	Grant Hill G. Hill	1.7	29	15.1	3.2	0.9	0.4	0.2	1.3	3.4	38.8	0.1	0.4	27.3	0.5	0.8	58.3	42.8	0.2	1.5	0.9	437	93	49	26	11	7	25	39	+1
19	Chris Paul C. Paul	1.7	3	15.2	3.3	4.7	1.3	0.0	1.0	3.3	30.0	1.0	3.0	33.3	0.3	0.3	100.0	47.9	1.0	0.7	1.0	46	10	5	14	4	0	3	9	-8
20	James Edwards J. Edwards	1.5	26	9.8	3.5	0.4	0.0	0.3	1.5	4.0	37.5	0.0	0.0		0.5	0.9	58.3	40.2	0.6	1.0	0.7	255	92	40	10	1	7	18	57
21	Rick Mahorn R. Mahorn	1.4	16	7.9	0.8	0.1	0.3	0.1	0.3	1.1	27.8	0.0	0.0		0.2	0.5	37.5	30.2	0.4	1.0	0.4	127	13	23	2	5	1	6	22	-34
22	Herb Williams H. Williams	1.3	16	7.1	1.7	0.2	0.3	0.3	0.8	1.8	44.8	0.0	0.0		0.1	0.3	25.0	43.9	0.3	1.1	0.2	113	27	21	3	5	5	3	19	-1
23	John Long J. Long	1.3	32	11.6	4.0	0.7	0.3	0.1	1.4	3.7	39.3	0.4	1.1	35.3	0.8	0.9	89.3	49.9	0.2	1.1	0.8	370	129	40	21	9	2	24	28	-63
24	Juwan Howard J. Howard	1.1	7	7.2	3.0	0.9	0.0	0.0	1.4	2.7	52.6	0.0	0.0		0.1	0.1	100.0	54.0	0.0	1.1	0.6	51	21	8	6	0	0	4	9	-13
25	Charles Jones C. Jones	1.0	24	6.0	0.6	0.2	0.1	0.3	0.3	0.5	63.6	0.0	0.0		0.0	0.1	50.0	63.1	0.4	0.6	0.2	144	15	23	5	2	6	4	22	-11