Brandon Jennings is the youngest in a game with 50+ points. He was 20 years and 52 days old versus the Warriors on November 14, 2009.

who is the youngest player to score 50 points in an nba game

Interpreted as:

Who is the youngest player to score 50 or more points in an NBA regular-season game?

NAME	AGE	PTS	DATE	TM		OPP	MIN	REB	AST	STL	BLK	TOV	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	PF	+/-
Brandon Jennings	20-052	55	11/14/2009	MIL	vs	GSW	41	5	5	0	0	4	21	34	61.8	7	8	87.5	6	8	75.0	1	+11
LeBron James	20-080	56	3/20/2005	CLE	@	TOR	48	10	5	2	0	4	18	36	50.0	6	12	50.0	14	15	93.3	0	-7
Devin Booker	20-145	70	3/24/2017	PHX	@	BOS	45	8	6	3	1	5	21	40	52.5	4	11	36.4	24	26	92.3	3	-6
LeBron James	20-345	52	12/10/2005	CLE	@	MIL	43	7	7	2	0	3	19	29	65.5	5	9	55.6	9	10	90.0	5	-3
Kevin Porter Jr.	20-360	50	4/29/2021	HOU	vs	MIL	41	5	11	0	1	5	16	26	61.5	9	15	60.0	9	11	81.8	5	+19
LeBron James	21-022	51	1/21/2006	CLE	@	UTA	43	5	8	2	0	3	19	35	54.3	4	8	50.0	9	11	81.8	4	+19
Trae Young	21-154	50	2/20/2020	ATL	vs	MIA	40	2	8	2	1	7	12	25	48.0	8	15	53.3	18	19	94.7	4	+10
Rick Barry	21-261	57	12/14/1965	SFW	@	NYK	44	15	3				18	29	62.1				21	22	95.5	5
Allen Iverson	21-309	50	4/12/1997	PHI	@	CLE	46	5	6	2	0	9	17	32	53.1	5	9	55.6	11	18	61.1	5	-4
Jamal Mashburn	21-348	50	11/12/1994	DAL	@	CHI	43	10	2	0	0	8	19	31	61.3	3	3	100.0	9	13	69.2	4
Phil Chenier	22-037	53	12/6/1972	BAL	vs	POR	42	1	4				22	31	71.0				9	11	81.8	0
Shaquille O'Neal	22-045	53	4/20/1994	ORL	vs	MIN	36	18	4	2	2	3	22	31	71.0	0	0		9	13	69.2	3
Amar'e Stoudemire	22-047	50	1/2/2005	PHX	vs	POR	41	11	3	1	1	1	20	27	74.1	0	1	0.0	10	17	58.8	3	+25
Kobe Bryant	22-105	51	12/6/2000	LAL	@	GSW	51	7	8	2	1	8	18	35	51.4	2	7	28.6	13	13	100.0	4	-2
Karl-Anthony Towns	22-133	56	3/28/2018	MIN	vs	ATL	41	15	4	0	1	2	19	32	59.4	6	8	75.0	12	15	80.0	4	+7
Devin Booker	22-146	59	3/25/2019	PHX	@	UTA	41	4	4	1	0	6	19	34	55.9	5	8	62.5	16	17	94.1	5	-13
Devin Booker	22-148	50	3/27/2019	PHX	vs	WAS	37	10	4	1	1	5	19	29	65.5	3	9	33.3	9	10	90.0	3	+8
Bob McAdoo	22-150	52	2/22/1974	BUF	vs	BOS	48	22	2		7		20	28	71.4				12	14	85.7	4
Ja Morant	22-202	52	2/28/2022	MEM	vs	SAS	34	7	2	0	0	4	22	30	73.3	4	4	100.0	4	7	57.1	1	+23
Rick Barry	22-215	57	10/29/1966	SFW	@	CIN	48	15	7				21	44	47.7				15	17	88.2	2
Anthony Edwards	22-248	51	4/9/2024	MIN	vs	WAS	38	6	7	0	0	2	17	29	58.6	6	13	46.2	11	11	100.0	0	+6
Rick Barry	22-255	50	12/8/1966	SFW		STL	48	13	5				19	46	41.3				12	14	85.7	3
Rick Barry	22-272	50	12/25/1966	SFW	@	CIN	47	6	4				19	35	54.3				12	13	92.3	1
Tracy McGrady	22-288	50	3/8/2002	ORL	vs	WAS	42	10	3	2	0	3	18	29	62.1	4	7	57.1	10	15	66.7	1	+7
Darius Garland	22-291	51	11/13/2022	CLE	vs	MIN	40	2	6	2	0	2	16	31	51.6	10	15	66.7	9	13	69.2	3	+6