Anthony Edwards has buried the most career threes by a player younger than 21, with 386 three-pointers.

most threes made by a player before age 21

NAME	3PM	GP	MPG	PPG	RPG	APG	SPG	BPG	TPG	FGM	FGA	FG%	3PA	3P%	FTM	FTA	FT%	MIN	PTS	REB	AST	STL	BLK	TOV	PF	+/-
Anthony Edwards	386	144	33.2	20.3	4.7	3.4	1.3	0.6	2.4	7.3	17.1	42.9	7.8	34.4	3.0	3.8	78.1	4,780	2,925	679	486	187	82	350	293	-40
LaMelo Ball	312	126	30.9	18.3	6.4	7.0	1.6	0.4	3.1	6.6	15.3	43.1	6.6	37.8	2.7	3.2	82.6	3,890	2,311	803	884	200	48	390	373	+15
Luka Doncic	305	119	32.4	24.2	8.5	7.1	1.1	0.3	3.7	8.0	18.0	44.3	7.9	32.5	5.6	7.6	73.6	3,857	2,876	1,012	839	126	34	446	253	+142
Jalen Green	290	118	33.0	19.3	3.7	3.1	0.7	0.3	2.4	6.7	15.8	42.1	7.2	34.2	3.6	4.5	78.8	3,890	2,279	432	361	81	30	282	189	-877
Jabari Smith Jr.	258	155	31.4	13.3	7.6	1.4	0.6	0.9	1.2	4.8	11.1	43.0	5.0	33.5	2.0	2.5	79.8	4,874	2,054	1,185	222	95	135	193	427	-638
Devin Booker	258	160	31.5	18.1	3.0	3.1	0.8	0.3	2.6	6.4	15.0	42.4	4.5	35.5	3.8	4.5	83.5	5,033	2,897	473	494	122	43	419	481	-642
Jamal Murray	229	139	25.2	12.6	3.0	2.4	0.7	0.3	1.7	4.6	10.5	43.3	4.6	35.8	1.8	2.0	90.1	3,497	1,750	416	338	101	40	233	243	+195
Bradley Beal	229	129	33.1	15.7	3.8	2.9	0.9	0.4	1.7	5.9	14.2	41.6	4.5	39.6	2.1	2.7	78.7	4,275	2,029	484	380	121	47	218	266	+21
D'Angelo Russell	212	122	27.6	13.5	3.5	3.8	1.2	0.2	2.5	4.9	12.2	40.4	5.0	35.0	1.9	2.6	75.1	3,371	1,649	431	464	143	26	307	223	-672
LeBron James	212	186	41.0	25.0	6.4	6.4	1.9	0.7	3.4	9.1	20.1	45.4	3.5	33.0	5.6	7.4	75.5	7,629	4,649	1,187	1,193	352	135	626	361	+165
Jayson Tatum	200	143	30.8	14.9	5.6	1.7	1.1	0.8	1.5	5.4	11.7	46.5	3.5	40.2	2.7	3.2	84.3	4,407	2,132	797	244	152	108	212	307	+673
Coby White	196	91	28.1	13.9	3.9	3.5	0.6	0.1	1.9	5.0	12.7	39.8	6.1	35.4	1.7	2.1	81.8	2,554	1,267	352	317	59	9	172	180	-246
Jaren Jackson Jr.	196	115	27.3	15.5	4.6	1.2	0.8	1.5	1.7	5.7	11.7	48.5	4.4	38.4	2.5	3.3	75.7	3,137	1,788	534	142	92	174	197	452	-207
Kevin Knox II	190	140	23.7	9.9	3.7	1.0	0.5	0.4	1.1	3.4	9.4	36.7	4.0	33.7	1.6	2.3	69.7	3,324	1,382	519	143	66	52	159	281	-816
RJ Barrett	187	128	32.9	16.1	5.4	2.8	0.8	0.3	2.1	5.9	14.0	42.5	4.0	37.0	2.8	4.1	68.3	4,215	2,067	693	360	108	37	263	310	-188
Martell Webster	184	161	21.4	7.4	2.9	0.7	0.4	0.3	0.9	2.6	6.4	40.2	3.2	35.9	1.1	1.5	75.5	3,444	1,193	461	111	69	45	145	258	-481
Malaki Branham	170	141	22.3	9.7	2.3	2.0	0.4	0.1	1.2	3.8	8.8	43.6	3.7	32.5	0.8	0.9	85.0	3,144	1,363	329	283	60	15	167	209	-737
Eric Gordon	169	97	34.7	16.3	2.6	2.8	1.1	0.4	2.1	5.4	11.7	45.9	4.5	38.6	3.8	4.6	82.7	3,365	1,584	255	270	108	39	205	199	-469
Malik Monk	166	112	15.8	8.4	1.4	1.6	0.4	0.2	1.0	3.0	7.8	38.1	4.3	34.4	1.0	1.1	88.5	1,772	938	153	183	47	22	115	131	-171
Kyrie Irving	165	100	32.8	20.7	3.7	5.5	1.3	0.4	3.2	7.7	16.4	46.7	4.1	40.7	3.7	4.4	85.6	3,279	2,071	373	552	133	37	315	238	-274
Shaedon Sharpe	162	112	25.3	11.6	3.5	1.7	0.6	0.3	1.4	4.3	9.7	44.5	4.1	35.0	1.5	2.0	77.2	2,838	1,299	396	188	66	36	155	224	-543
Stephon Marbury	162	118	36.3	17.2	2.7	8.0	1.2	0.2	3.2	5.9	14.2	41.5	4.1	33.5	4.0	5.6	71.5	4,286	2,028	322	939	141	23	375	301	-75
Trae Young	156	81	30.9	19.1	3.7	8.1	0.9	0.2	3.8	6.5	15.5	41.8	6.0	32.4	4.2	5.1	82.9	2,503	1,549	301	653	72	15	308	140	-336
Kevin Durant	156	154	36.7	22.7	5.4	2.6	1.1	0.8	3.0	8.1	17.9	45.3	2.8	35.9	5.5	6.3	86.7	5,653	3,495	830	397	174	128	457	256	-1152
Eddie Griffin	154	150	25.2	8.7	5.8	0.9	0.5	1.6	0.8	3.4	9.0	38.3	3.1	33.1	0.8	1.2	67.8	3,786	1,306	877	139	69	245	123	253	-10