I couldn't find anything for this season, but Kristaps Porziņģis scored the most points per game with fewer than 20.0 points per game in 2024-25, with 19.5 per game.

Interpreted as:

most ppg by a player this season, less than 20 ppg

	NAME	PPG	SEASON	TM	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	Kristaps Porziņģis K. Porziņģis	19.5	2024-25	BOS	42	28.8	6.8	2.1	0.7	1.5	6.6	13.7	48.3	2.5	6.0	41.2	3.8	4.7	80.9	61.8	1.6	5.1	1.3	1,210	818	284	87	31	63	53	116	+173
2	Scottie Barnes S. Barnes	19.3	2024-25	TOR	65	32.8	7.7	5.8	1.4	1.0	7.3	16.4	44.6	1.2	4.3	27.1	3.5	4.6	75.5	52.3	1.7	6.0	2.8	2,134	1,252	502	378	93	63	185	113	-130
3	Anfernee Simons A. Simons	19.3	2024-25	POR	70	32.7	2.7	4.8	0.9	0.1	6.8	16.1	42.6	3.1	8.5	36.3	2.5	2.8	90.2	55.7	0.4	2.3	2.0	2,292	1,348	189	337	60	5	143	117	-220
4	Desmond Bane D. Bane	19.2	2024-25	MEM	69	32.0	6.1	5.3	1.2	0.4	7.1	14.8	48.4	2.4	6.1	39.2	2.6	2.9	89.4	60.0	0.9	5.2	2.4	2,205	1,327	418	369	80	28	169	164	+143
5	Domantas Sabonis D. Sabonis	19.1	2024-25	SAC	70	34.7	13.9	6.0	0.7	0.4	7.5	12.8	59.0	0.9	2.2	41.7	3.1	4.1	75.4	65.5	3.8	10.1	2.9	2,429	1,337	972	423	48	26	202	229	+145
6	Alperen Sengun A. Sengun	19.1	2024-25	HOU	76	31.5	10.3	4.9	1.1	0.8	7.5	15.0	49.6	0.3	1.2	23.3	3.9	5.6	69.2	54.5	3.4	6.9	2.6	2,395	1,451	786	372	84	61	194	209	+410
7	Lauri Markkanen L. Markkanen	19.0	2024-25	UTA	47	31.4	5.9	1.5	0.7	0.4	6.3	14.9	42.3	2.9	8.5	34.6	3.4	3.9	87.6	57.1	1.5	4.4	1.4	1,476	892	278	70	33	17	66	79	-186
8	John Collins J. Collins	19.0	2024-25	UTA	40	30.5	8.2	2.0	1.0	1.0	7.0	13.3	52.7	1.5	3.7	39.9	3.5	4.1	84.8	62.8	2.2	6.0	2.6	1,220	758	327	80	39	40	103	116	-16
9	Jalen Johnson J. Johnson	18.9	2024-25	ATL	36	35.7	10.0	5.0	1.6	1.0	7.5	15.1	50.0	1.2	3.9	31.2	2.6	3.5	74.6	56.9	1.7	8.3	2.9	1,284	680	359	181	56	36	106	67	+55
10	Cameron Johnson C. Johnson	18.8	2024-25	BKN	57	31.6	4.3	3.4	0.9	0.4	6.2	13.1	47.5	2.8	7.2	39.0	3.5	3.9	89.3	63.2	0.9	3.4	1.7	1,800	1,070	247	194	53	25	99	104	-200
11	Julius Randle J. Randle	18.7	2024-25	MIN	69	32.3	7.1	4.7	0.7	0.2	6.6	13.6	48.5	1.6	4.6	34.4	3.9	4.9	80.6	59.3	2.1	5.0	2.8	2,226	1,288	487	323	47	16	196	175	+166
12	Tyrese Haliburton T. Haliburton	18.6	2024-25	IND	73	33.6	3.5	9.2	1.4	0.7	6.5	13.8	47.3	3.0	7.7	38.8	2.6	3.0	85.1	61.6	0.6	3.0	1.6	2,451	1,359	258	673	105	49	120	92	+222
13	Shaedon Sharpe S. Sharpe	18.5	2024-25	POR	72	31.3	4.5	2.8	0.9	0.2	6.9	15.3	45.2	2.0	6.6	31.1	2.6	3.4	78.5	55.1	0.9	3.6	2.1	2,252	1,335	324	198	62	16	150	120	-138
14	Evan Mobley E. Mobley	18.5	2024-25	CLE	71	30.5	9.3	3.2	0.9	1.6	7.1	12.8	55.7	1.2	3.2	37.0	3.1	4.3	72.5	63.3	2.3	7.0	2.0	2,167	1,316	659	226	61	113	145	141	+546
15	Nikola Vučević N. Vučević	18.5	2024-25	CHI	73	31.2	10.1	3.5	0.8	0.7	7.5	14.2	53.0	1.8	4.4	40.2	1.6	2.0	80.5	61.1	2.4	7.6	1.6	2,278	1,349	735	256	61	52	119	163	-98
16	Collin Sexton C. Sexton	18.4	2024-25	UTA	63	27.9	2.7	4.2	0.7	0.1	6.6	13.8	48.0	1.7	4.3	40.6	3.4	4.0	86.5	59.3	1.0	1.8	2.5	1,758	1,159	171	264	47	6	160	144	-286
17	Michael Porter Jr. M. Porter Jr.	18.2	2024-25	DEN	77	33.7	7.0	2.1	0.6	0.5	6.9	13.6	50.4	2.5	6.4	39.5	1.9	2.5	76.8	61.7	1.8	5.2	1.4	2,593	1,398	540	165	50	38	104	157	+265
18	Bam Adebayo B. Adebayo	18.1	2024-25	MIA	78	34.3	9.6	4.3	1.3	0.7	6.9	14.3	48.5	1.0	2.8	35.7	3.2	4.2	76.5	56.1	2.4	7.2	2.1	2,674	1,410	749	337	98	53	161	162	+27
19	OG Anunoby	18.0	2024-25	NYK	74	36.6	4.8	2.2	1.5	0.9	6.6	13.9	47.6	2.3	6.2	37.2	2.5	3.1	81.0	59.1	1.3	3.5	1.4	2,706	1,332	358	164	110	65	102	172	+301
20	Andrew Wiggins A. Wiggins	18.0	2024-25	TOT	60	30.7	4.5	2.6	1.0	0.8	6.3	14.0	44.8	2.2	5.8	37.4	3.3	4.3	76.3	56.6	1.5	3.0	1.7	1,842	1,078	269	158	60	50	99	101	-100
21	Mikal Bridges M. Bridges	17.6	2024-25	NYK	82	37.0	3.2	3.7	0.9	0.5	7.2	14.4	50.0	2.0	5.6	35.4	1.2	1.4	81.4	58.5	0.9	2.3	1.6	3,036	1,444	259	306	75	43	132	127	+334
22	Jaden Ivey J. Ivey	17.6	2024-25	DET	30	29.9	4.1	4.0	0.9	0.4	6.3	13.8	46.0	2.1	5.1	40.9	2.8	3.9	73.3	56.9	1.3	2.8	3.0	898	528	124	119	28	11	89	67	-62
23	Jimmy Butler III J. Butler III	17.5	2024-25	TOT	55	31.7	5.4	5.4	1.4	0.3	5.5	10.9	50.4	0.6	1.9	30.8	6.0	7.1	84.2	62.6	2.3	3.1	1.3	1,746	964	296	298	77	18	74	52	+246
24	Dejounte Murray D. Murray	17.5	2024-25	NOP	31	32.6	6.5	7.4	2.0	0.4	6.3	15.9	39.3	1.7	5.6	29.9	3.3	4.0	82.3	49.4	0.5	5.9	3.4	1,012	542	200	228	63	12	106	61	-207
25	Malik Monk M. Monk	17.2	2024-25	SAC	65	31.6	3.8	5.6	0.9	0.6	6.3	14.4	43.9	2.1	6.6	32.5	2.4	2.7	86.5	54.9	0.5	3.3	2.4	2,054	1,117	245	362	61	38	159	158	+116