LeBron James has averaged the most points per game by a player younger than 20 when playing 50+ games, with 21.9 per game.

Interpreted as:

highest ppg by a player under 20 years old 50 or more games

	NAME	PPG	GP	MPG	RPG	APG	SPG	BPG	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	TS%	OREB	DREB	TPG	MIN	PTS	REB	AST	STL	BLK	TOV	PF	+/-
1	LeBron James L. James	21.9	108	39.9	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	673	202	83	367	202	-11
2	Carmelo Anthony C. Anthony	21.0	82	36.5	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	227	97	41	247	225	+65
3	Luka Dončić L. Dončić	20.9	57	32.2	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	324	57	16	194	107	-16
4	Kevin Durant K. Durant	20.3	80	34.6	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	192	78	75	232	122	-651
5	Anthony Edwards A. Edwards	19.3	72	32.1	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	211	82	36	160	129	-228
6	LaMelo Ball L. Ball	15.7	51	28.8	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	313	81	18	145	136	-84
7	Andrew Wiggins A. Wiggins	15.3	54	34.6	4.3	1.9	1.1	0.6	5.7	13.1	43.5	0.6	1.8	35.4	3.3	4.4	73.9	50.8	1.5	2.8	2.0	1,867	826	233	104	60	32	106	131	-280
8	RJ Barrett	14.3	56	30.4	5.0	2.6	1.0	0.3	5.2	13.0	40.2	1.1	3.5	32.0	2.8	4.5	61.4	47.9	0.9	4.1	2.2	1,704	803	279	143	55	17	124	122	-325
9	Devin Booker D. Booker	13.9	78	27.9	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	204	44	20	165	233	-380
10	Bradley Beal B. Beal	13.9	56	31.2	3.8	2.4	0.9	0.5	5.0	12.3	41.0	1.6	4.2	38.6	2.2	2.8	78.6	51.5	0.8	3.0	1.6	1,745	780	211	137	50	29	90	113	-89
11	Jaren Jackson Jr. J. Jackson Jr.	13.8	58	26.1	4.7	1.1	0.9	1.4	5.1	10.2	50.6	0.9	2.4	35.9	2.6	3.4	76.6	59.1	1.3	3.4	1.7	1,515	798	272	64	52	82	98	220	-103
12	Jayson Tatum J. Tatum	13.3	63	30.6	5.0	1.4	0.9	0.8	4.7	9.9	47.3	1.3	2.9	43.2	2.6	3.2	82.9	58.7	0.7	4.3	1.3	1,926	835	314	88	59	50	81	131	+271
13	Cliff Robinson C. Robinson	13.0	62						5.3			0.0			2.3	3.4	69.2						807
14	Alex Sarr A. Sarr	13.0	67	27.1	6.5	2.4	0.7	1.5	4.9	12.4	39.4	1.6	5.1	30.8	1.7	2.5	67.9	48.2	1.9	4.6	1.7	1,814	869	435	161	44	101	114	146	-547
15	Kevin Knox II K. Knox II	12.8	75	28.8	4.5	1.1	0.6	0.3	4.5	12.2	37.0	1.7	4.9	34.3	2.2	3.0	71.7	47.5	0.8	3.7	1.5	2,158	963	335	82	43	24	114	175	-637
16	Jabari Smith Jr. J. Smith Jr.	12.8	79	31.0	7.2	1.3	0.5	0.9	4.6	11.3	40.8	1.5	4.9	30.7	2.1	2.6	78.6	51.4	1.5	5.7	1.3	2,450	1,010	569	101	43	74	104	227	-555
17	Josh Giddey J. Giddey	12.5	54	31.5	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	345	51	20	171	88	-299
18	Dwight Howard D. Howard	12.4	100	33.3	10.6	1.0	0.9	1.6	4.5	8.8	51.1	0.0	0.0	0.0	3.5	5.3	65.2	55.9	3.5	7.1	2.0	3,327	1,243	1,061	100	94	163	203	297	-216
19	Zaccharie Risacher Z. Risacher	12.4	71	24.8	3.6	1.3	0.7	0.5	4.7	10.4	44.9	1.6	4.6	34.6	1.4	2.0	72.3	54.8	1.2	2.4	1.2	1,757	878	258	89	50	35	88	141	-151
20	D'Angelo Russell D. Russell	12.1	56	27.2	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	189	64	9	134	93	-289
21	Kobe Bryant K. Bryant	11.7	150	21.1	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	290	123	63	269	282	+324
22	Luol Deng L. Deng	11.7	61	27.3	5.3	2.2	0.8	0.4	4.6	10.6	43.4	0.5	1.9	26.5	2.0	2.7	74.1	49.6	1.5	3.8	1.9	1,663	711	322	135	48	27	118	98	+158
23	Chris Bosh C. Bosh	11.2	63	32.9	7.3	1.0	0.7	1.4	4.2	9.3	45.7	0.0	0.1	37.5	2.7	3.9	68.4	50.9	2.6	4.7	1.4	2,074	704	461	65	46	86	86	176	-139
24	Coby White C. White	11.1	55	24.3	3.5	2.4	0.7	0.1	4.1	10.9	37.0	1.8	5.3	33.8	1.2	1.7	74.7	47.7	0.5	3.0	1.5	1,337	612	192	132	41	4	80	91	-177
25	Jeremy Sochan J. Sochan	11.0	56	26.0	5.3	2.5	0.8	0.4	4.5	9.9	45.3	0.6	2.4	24.6	1.4	2.1	69.8	50.9	1.7	3.6	1.7	1,458	614	295	142	43	23	97	138	-235