Dikembe Mutombo is the oldest Defensive Player of the Year in a season. He was 34 years old in 2000-01.

Interpreted as:

oldest ever player to win dpoy in a regular season

NAME	AGE	DPOY	SEASON	TM	GP	MPG	PPG	RPG	APG	SPG	BPG	TPG	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	MIN	PTS	REB	AST	STL	BLK	TOV	PF	+/-
Dikembe Mutombo	34	1	2000-01	TOT	75	34.5	10.0	13.5	1.0	0.4	2.7	1.9	3.6	7.4	48.4	0.0	0.0		2.8	3.9	72.5	2,591	749	1,015	76	29	203	144	204	+51
Marcus Camby	32	1	2006-07	DEN	70	33.8	11.2	11.7	3.2	1.2	3.3	1.7	4.5	9.4	47.3	0.0	0.0	0.0	2.3	3.2	72.9	2,369	785	816	223	87	231	122	183	+115
Mark Eaton	32	1	1988-89	UTA	82	35.5	6.2	10.3	1.0	0.5	3.8	1.7	2.3	5.0	46.2	0.0	0.0		1.6	2.4	66.0	2,914	508	843	83	40	315	142	290
Kevin Garnett	31	1	2007-08	BOS	71	32.8	18.8	9.2	3.4	1.4	1.3	1.9	7.5	13.9	53.9	0.0	0.2	0.0	3.8	4.7	80.1	2,328	1,337	655	244	100	89	138	163	+736
Ben Wallace	31	1	2005-06	DET	82	35.2	7.3	11.3	1.9	1.8	2.2	1.1	2.9	5.7	51.0	0.0	0.0	0.0	1.5	3.6	41.6	2,890	597	923	158	146	181	88	164	+598
Dikembe Mutombo	31	1	1997-98	ATL	82	35.6	13.4	11.4	1.0	0.4	3.4	2.0	4.9	9.1	53.7	0.0	0.0		3.7	5.5	67.0	2,917	1,101	932	82	34	277	168	254	+421
Hakeem Olajuwon	31	1	1993-94	HOU	80	41.0	27.3	11.9	3.6	1.6	3.7	3.4	11.2	21.2	52.8	0.1	0.2	42.1	4.9	6.8	71.6	3,277	2,184	955	287	128	297	271	289
Ben Wallace	30	1	2004-05	DET	74	36.1	9.7	12.2	1.7	1.4	2.4	1.1	4.0	8.8	45.3	0.0	0.1	11.1	1.8	4.1	42.8	2,671	721	902	123	106	176	82	159	+343
Dikembe Mutombo	30	1	1996-97	ATL	80	37.2	13.3	11.6	1.4	0.6	3.3	2.3	4.8	9.0	52.7	0.0	0.0		3.8	5.4	70.5	2,973	1,066	929	110	49	264	186	249	+432
Hakeem Olajuwon	30	1	1992-93	HOU	82	39.5	26.1	13.0	3.5	1.8	4.2	3.2	10.3	19.5	52.9	0.0	0.1	0.0	5.4	7.0	77.9	3,242	2,140	1,068	291	150	342	262	305
Michael Cooper	30	1	1986-87	LAL	82	27.5	10.5	3.1	4.5	1.0	0.5	1.2	3.9	9.0	43.8	1.1	2.8	38.5	1.5	1.8	85.1	2,253	859	254	373	78	43	102	199
Tyson Chandler	29	1	2011-12	NYK	62	33.2	11.3	9.9	0.9	0.9	1.4	1.6	3.9	5.7	67.9	0.0	0.0	0.0	3.5	5.1	68.9	2,061	699	612	56	56	89	102	186	+125
Alonzo Mourning	29	1	1999-00	MIA	79	34.8	21.7	9.5	1.6	0.5	3.7	2.7	8.3	15.0	55.1	0.0	0.1	0.0	5.2	7.4	71.1	2,748	1,718	753	123	40	294	217	308	+270
Dennis Rodman	29	1	1990-91	DET	82	33.5	8.2	12.5	1.0	0.8	0.7	1.1	3.4	6.8	49.3	0.1	0.4	20.0	1.4	2.1	63.1	2,747	669	1,026	85	65	55	94	281
Rudy Gobert	28	1	2020-21	UTA	71	30.8	14.3	13.5	1.3	0.6	2.7	1.7	5.5	8.2	67.5	0.0	0.1	0.0	3.3	5.3	62.3	2,187	1,015	960	89	40	190	118	163	+728
Joakim Noah	28	1	2013-14	CHI	80	35.3	12.6	11.3	5.4	1.2	1.5	2.4	4.8	10.0	47.5	0.0	0.0	0.0	3.1	4.2	73.7	2,820	1,007	900	431	99	121	194	245	+232
Marc Gasol	28	1	2012-13	MEM	80	35.0	14.1	7.8	4.0	1.0	1.7	2.0	5.4	10.9	49.4	0.0	0.2	7.1	3.4	4.0	84.8	2,796	1,127	622	318	80	139	157	255	+434
Ben Wallace	28	1	2002-03	DET	73	39.4	6.9	15.4	1.6	1.4	3.2	1.2	2.9	6.0	48.1	0.0	0.1	16.7	1.2	2.6	45.0	2,873	506	1,126	120	104	230	88	179	+222
Alonzo Mourning	28	1	1998-99	MIA	46	38.1	20.1	11.0	1.6	0.7	3.9	3.0	7.0	13.8	51.1	0.0	0.0	0.0	6.0	9.2	65.2	1,753	924	507	74	34	180	139	161	+340
Dikembe Mutombo	28	1	1994-95	DEN	82	37.8	11.5	12.5	1.4	0.5	3.9	2.3	4.3	7.7	55.6	0.0	0.0		3.0	4.6	65.4	3,100	946	1,029	113	40	321	192	284
Dennis Rodman	28	1	1989-90	DET	82	29.0	8.8	9.7	0.9	0.6	0.7	1.1	3.5	6.0	58.1	0.0	0.1	11.1	1.7	2.6	65.4	2,377	719	792	72	52	60	90	276
Mark Eaton	28	1	1984-85	UTA	82	34.3	9.7	11.3	1.5	0.4	5.6	2.5	3.7	8.2	44.9	0.0	0.0		2.3	3.3	71.2	2,813	794	927	124	36	456	206	312
Marcus Smart	27	1	2021-22	BOS	71	32.3	12.1	3.8	5.9	1.7	0.3	2.2	4.2	10.1	41.8	1.7	5.1	33.1	2.0	2.5	79.3	2,296	861	270	417	119	18	159	160	+443
Ben Wallace	27	1	2001-02	DET	80	36.5	7.6	13.0	1.4	1.7	3.5	0.9	3.2	6.0	53.1	0.0	0.0	0.0	1.2	2.9	42.3	2,921	609	1,039	115	138	278	70	178	+150
Gary Payton	27	1	1995-96	SEA	81	39.0	19.3	4.2	7.5	2.9	0.2	3.2	7.6	15.8	48.4	1.2	3.7	32.8	2.8	3.8	74.8	3,162	1,563	339	608	231	19	260	221