Michael Jordan is the oldest player off the bench in a game with 30+ points. He was 39 years and 40 days old against the Bucks on March 29, 2002.

who is the oldest nba player to score 30 points in a game off the bench

Interpreted as:

Who is the oldest NBA player to score 30 or more points in a regular-season game off the bench?

NAME	AGE	PTS	DATE	TM		OPP	MIN	REB	AST	STL	BLK	TOV	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	PF	+/-
Michael Jordan	39-040	34	3/29/2002	WAS	vs	MIL	26	3	1	0	0	0	12	22	54.5	0	0		10	12	83.3	1	-7
Jamal Crawford	39-020	51	4/9/2019	PHX	@	DAL	38	5	5	1	1	4	18	30	60.0	7	13	53.8	8	9	88.9	4	-5
Eddie Johnson	38-312	37	3/9/1998	HOU	@	UTA	42	3	2	2	0	3	13	18	72.2	4	7	57.1	7	7	100.0	2	-3
Sam Cassell	37-051	31	1/8/2007	LAC	@	NOK	35	5	4	2	0	2	11	23	47.8	3	5	60.0	6	7	85.7	2	+18
Kyle Korver	36-329	30	2/9/2018	CLE	@	ATL	32	3	0	1	1	1	9	16	56.3	7	13	53.8	5	5	100.0	2	+18
Dwyane Wade	36-312	35	11/25/2018	MIA	@	TOR	34	5	6	0	1	3	13	22	59.1	4	7	57.1	5	7	71.4	3	+11
Magic Johnson	36-186	30	2/16/1996	LAL	vs	DAL	31	8	11	2	2	3	10	15	66.7	1	2	50.0	9	10	90.0	0
Antawn Jamison	36-171	33	11/30/2012	LAL	vs	DEN	33	12	2	1	1	3	13	19	68.4	5	10	50.0	2	2	100.0	4	+19
Walter Davis	36-054	33	11/2/1990	DEN	vs	GSW	28	10	1	0	0	2	14	24	58.3	0	1	0.0	5	7	71.4	4
JJ Redick	36-046	31	8/9/2020	NOP	vs	SAS	32	5	3	1	0	2	10	16	62.5	8	12	66.7	3	4	75.0	1	-6
Dale Ellis	35-214	33	3/7/1996	DEN	vs	PHX	40	8	5	0	0	3	13	21	61.9	5	7	71.4	2	2	100.0	2
Walter Davis	35-119	36	1/6/1990	DEN	vs	UTA	38	6	4	5	0	3	16	24	66.7	0	1	0.0	4	4	100.0	2
Walter Davis	35-097	35	12/15/1989	DEN	vs	SAC	28	3	2	2	0	1	13	23	56.5	0	1	0.0	9	9	100.0	0
Danny Ainge	34-296	34	1/7/1994	PHX	@	MIN	34	0	2	0	0	2	14	22	63.6	4	6	66.7	2	2	100.0	1
Calvin Murphy	34-206	32	12/1/1982	HOU	vs	LAL	35	0	3	1	0	2	13	20	65.0	0	0		6	6	100.0	1
Vinnie Johnson	34-180	32	2/28/1991	DET	@	MIA	35	5	0	2	0	0	13	22	59.1	0	0		6	6	100.0	2
Jason Terry	34-136	34	1/29/2012	DAL	vs	SAS	38	2	4	1	0	2	14	23	60.9	1	3	33.3	5	5	100.0	2	+8
Johnny Newman	34-132	35	4/9/1998	DEN	vs	SAC	39	2	2	3	0	5	10	17	58.8	2	3	66.7	13	13	100.0	2	+20
JJ Redick	34-121	30	10/23/2018	PHI	@	DET	37	5	6	0	0	0	9	21	42.9	6	15	40.0	6	7	85.7	1	+7
JJ Redick	34-118	31	10/20/2018	PHI	vs	ORL	32	4	4	1	0	0	10	20	50.0	8	13	61.5	3	3	100.0	1	+16
Walter Davis	34-118	31	1/5/1989	DEN	vs	GSW	30	4	2	0	0	2	10	20	50.0	4	8	50.0	7	7	100.0	4
Frank Brickowski	34-111	30	12/3/1993	MIL	@	DAL	32	6	3	1	0	6	10	13	76.9	1	1	100.0	9	10	90.0	3
Johnny Newman	34-106	33	3/14/1998	DEN	vs	POR	28	2	2	4	0	5	9	19	47.4	1	2	50.0	14	15	93.3	3	+10
Johnny Newman	34-074	34	2/10/1998	DEN	vs	BOS	29	2	1	2	1	3	9	13	69.2	1	1	100.0	15	18	83.3	3	-4
Walter Davis	34-057	33	11/5/1988	DEN	@	SEA	28	2	1	0	0	2	15	25	60.0	0	1	0.0	3	3	100.0	2