LeBron James has the most career assists by a player younger than 20, with 673 assists.

Interpreted as:

most assists before turning 20 years old by a player

	NAME	AST	GP	MPG	PPG	RPG	APG	SPG	BPG	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	TS%	OREB	DREB	TPG	MIN	PTS	REB	STL	BLK	TOV	PF	+/-
1	LeBron James L. James	673	108	39.9	21.9	5.9	6.2	1.9	0.8	8.2	18.8	43.5	0.8	2.7	30.8	4.6	6.1	75.6	50.8	1.3	4.6	3.4	4,307	2,362	634	202	83	367	202	-11
2	Bub Carrington B. Carrington	364	82	30.0	9.8	4.2	4.4	0.7	0.3	3.7	9.1	40.1	1.7	5.0	33.9	0.8	1.0	81.2	51.4	0.4	3.8	1.7	2,458	807	341	54	21	141	190	-798
3	Josh Giddey J. Giddey	345	54	31.5	12.5	7.8	6.4	0.9	0.4	5.2	12.4	41.9	1.0	3.9	26.3	1.0	1.5	70.9	47.8	1.8	6.0	3.2	1,700	674	421	51	20	171	88	-299
4	Tony Parker T. Parker	334	77	29.4	9.2	2.6	4.3	1.2	0.1	3.5	8.3	41.9	0.8	2.5	32.3	1.4	2.1	67.5	49.7	0.4	2.1	2.0	2,267	705	197	89	7	151	166	+177
5	Luka Dončić L. Dončić	324	57	32.2	20.9	7.3	5.7	1.0	0.3	6.9	15.9	43.4	2.5	7.0	35.3	4.7	6.5	72.6	56.0	1.1	6.2	3.4	1,837	1,194	415	57	16	194	107	-16
6	LaMelo Ball L. Ball	313	51	28.8	15.7	5.9	6.1	1.6	0.4	5.7	13.2	43.6	1.8	5.1	35.2	2.5	3.2	75.8	53.9	1.2	4.7	2.8	1,468	803	302	81	18	145	136	-84
7	Kobe Bryant K. Bryant	290	150	21.1	11.7	2.5	1.9	0.8	0.4	3.8	8.9	42.5	0.8	2.4	35.4	3.3	4.2	80.1	54.7	0.8	1.7	1.8	3,159	1,759	374	123	63	269	282	+324
8	Jrue Holiday J. Holiday	280	73	24.2	8.0	2.6	3.8	1.1	0.2	3.2	7.1	44.2	0.8	2.2	39.0	0.9	1.2	75.6	52.6	0.8	1.8	2.1	1,767	587	191	79	18	156	153	-161
9	Stephon Marbury S. Marbury	280	38	32.7	15.6	2.5	7.4	1.0	0.3	5.3	13.1	40.3	1.6	4.4	35.3	3.4	4.7	73.6	51.3	0.8	1.7	3.1	1,244	592	95	37	10	119	89	-141
10	Emmanuel Mudiay E. Mudiay	279	48	30.2	11.6	3.3	5.8	1.1	0.6	4.3	12.5	34.8	0.8	2.9	28.1	2.1	3.3	64.3	41.7	0.5	2.8	3.4	1,452	556	158	53	28	163	100	-75
11	Frank Ntilikina F. Ntilikina	250	78	21.9	5.9	2.3	3.2	0.8	0.2	2.3	6.4	36.4	0.6	2.0	31.8	0.6	0.9	72.1	43.7	0.5	1.8	1.7	1,706	463	177	65	18	131	181	-101
12	Theo Maledon T. Maledon	227	65	27.3	10.1	3.2	3.5	0.9	0.2	3.5	9.4	36.8	1.6	4.8	33.5	1.6	2.1	74.8	48.9	0.4	2.9	2.2	1,778	658	211	56	11	141	126	-621
13	Kyrie Irving K. Irving	227	40	31.3	19.0	3.8	5.7	1.0	0.5	7.0	14.8	47.4	1.3	3.3	40.5	3.7	4.2	87.0	57.1	1.0	2.9	3.1	1,253	760	153	40	18	125	95	-70
14	Carmelo Anthony C. Anthony	227	82	36.5	21.0	6.1	2.8	1.2	0.5	7.6	17.9	42.6	0.8	2.6	32.2	5.0	6.4	77.7	50.9	2.2	3.8	3.0	2,995	1,725	498	97	41	247	225	+65
15	Sebastian Telfair S. Telfair	224	68	19.6	6.8	1.5	3.3	0.5	0.1	2.5	6.3	39.3	0.3	1.0	24.6	1.5	2.0	78.9	47.1	0.1	1.4	1.8	1,330	460	104	35	4	125	120	-190
16	Anthony Edwards A. Edwards	211	72	32.1	19.3	4.7	2.9	1.1	0.5	7.0	16.8	41.7	2.4	7.2	32.9	2.9	3.8	77.6	52.3	0.8	3.8	2.2	2,314	1,392	336	82	36	160	129	-228
17	Tracy McGrady T. McGrady	211	113	20.2	8.0	4.8	1.9	0.9	1.1	3.1	6.9	44.3	0.2	0.7	28.9	1.7	2.4	72.0	50.4	2.0	2.8	1.3	2,285	909	547	101	127	146	180	-258
18	Devin Booker D. Booker	204	78	27.9	13.9	2.5	2.6	0.6	0.3	4.9	11.6	42.4	1.3	3.8	33.7	2.8	3.4	82.7	53.2	0.4	2.1	2.1	2,176	1,087	195	44	20	165	233	-380
19	Danté Exum D. Exum	198	82	22.2	4.8	1.6	2.4	0.5	0.2	1.8	5.1	34.9	1.0	3.2	31.4	0.2	0.4	62.5	45.7	0.3	1.3	1.4	1,817	393	131	41	14	118	147	+91
20	Giannis Antetokounmpo G. Antetokounmpo	194	98	25.1	7.9	4.7	2.0	0.7	0.7	2.7	6.2	43.3	0.4	1.3	32.8	2.0	2.9	69.6	52.3	1.1	3.7	1.6	2,460	770	463	73	73	156	225	-183
21	Kevin Durant K. Durant	192	80	34.6	20.3	4.4	2.4	1.0	0.9	7.3	17.1	43.0	0.7	2.6	28.8	4.9	5.6	87.3	51.9	0.9	3.5	2.9	2,768	1,624	348	78	75	232	122	-651
22	D'Angelo Russell D. Russell	189	56	27.2	12.1	3.6	3.4	1.1	0.2	4.7	11.2	41.8	1.5	4.5	34.3	1.3	1.8	70.7	50.7	0.6	3.0	2.4	1,523	678	199	64	9	134	93	-289
23	Alperen Sengun A. Sengun	185	72	20.7	9.6	5.5	2.6	0.8	0.9	3.5	7.3	47.4	0.4	1.6	24.8	2.3	3.2	71.1	55.2	1.9	3.5	2.0	1,489	692	393	59	68	145	214	-309
24	Scoot Henderson S. Henderson	180	40	26.5	12.8	2.9	4.5	0.6	0.3	4.5	11.7	38.0	1.2	3.9	31.4	2.6	3.3	80.2	48.4	0.9	2.1	3.0	1,061	510	117	23	10	119	120	-226
25	Zach LaVine Z. LaVine	170	57	20.4	7.4	2.1	3.0	0.7	0.1	2.9	6.9	41.7	0.4	1.4	29.3	1.3	1.6	81.3	49.2	0.2	1.9	2.1	1,162	424	121	42	7	117	111	-367