which player that plays less than 20 minutes a game leads the league in per requiring at least 15 games played this season

I don't have anything for this season, but Steven Adams had a PER of 16.7 when playing <20.0 minutes per game and playing 15+ games in 2024-25.

	NAME	PER	MPG	GP	SEASON	TM	PPG	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	Steven Adams S. Adams	16.7	13.7	58	2024-25	HOU	3.9	5.6	1.1	0.4	0.5	1.6	2.9	54.5	0.0	0.0	0.0	0.7	1.6	46.2	54.1	2.9	2.8	0.9	794	225	327	66	22	28	54	60	+172
2	Nicolas Batum N. Batum	10.3	17.5	78	2024-25	LAC	4.0	2.8	1.1	0.7	0.5	1.3	3.1	43.7	1.1	2.6	43.3	0.2	0.3	81.0	63.3	0.6	2.2	0.4	1,367	313	218	84	52	36	34	111	+152
3	Bismack Biyombo B. Biyombo	12.3	18.9	28	2024-25	SAS	5.1	5.6	1.1	0.6	0.8	2.4	4.1	58.8	0.0	0.0		0.4	0.9	40.0	57.6	1.5	4.1	1.0	528	144	158	31	16	23	27	52	-100
4	Alec Burks A. Burks	12.8	17.6	49	2024-25	MIA	7.3	2.5	1.1	0.6	0.1	2.3	5.5	42.4	1.8	4.2	42.5	0.8	1.0	77.6	60.8	0.3	2.2	0.6	863	356	124	55	28	7	29	37	+110
5	Andre Drummond A. Drummond	16.1	18.8	40	2024-25	PHI	7.3	7.8	0.9	1.0	0.5	2.9	5.9	50.0	0.1	0.5	15.0	1.4	2.3	62.2	53.5	2.7	5.0	1.4	751	293	310	34	39	18	55	94	-245
6	Taj Gibson T. Gibson	10.8	11.1	37	2024-25	CHA	2.9	3.2	0.6	0.2	0.5	1.3	2.6	49.5	0.0	0.1	50.0	0.3	0.5	60.0	51.5	1.4	1.9	0.7	409	107	120	21	9	18	25	54	-124
7	Eric Gordon E. Gordon	10.8	19.7	39	2024-25	PHI	6.8	1.2	1.7	0.7	0.3	2.2	5.2	42.6	1.4	3.5	40.9	0.9	1.2	75.0	59.1	0.2	1.0	0.7	768	266	46	65	26	12	28	32	-72
8	Jeff Green J. Green	13.6	12.4	32	2024-25	HOU	5.4	1.8	0.6	0.2	0.1	1.9	3.8	50.4	0.9	2.5	36.7	0.7	0.8	80.8	64.9	0.3	1.5	0.3	396	172	58	20	6	4	9	32	-38
9	Reggie Jackson R. Jackson	9.8	12.4	31	2024-25	PHI	4.4	1.4	1.5	0.5	0.1	1.7	4.3	39.1	0.8	2.4	33.8	0.2	0.3	77.8	49.6	0.3	1.1	0.5	384	136	42	45	16	3	17	34	-19
10	DeAndre Jordan D. Jordan	15.5	12.3	56	2024-25	DEN	3.7	5.1	0.9	0.3	0.5	1.6	2.5	65.0	0.0	0.0		0.5	1.1	42.2	62.1	1.5	3.6	0.7	691	209	284	53	16	27	40	74	-47
11	Cory Joseph C. Joseph	10.9	12.2	50	2024-25	ORL	3.5	1.5	1.4	0.5	0.1	1.2	3.1	40.3	0.8	2.1	36.4	0.3	0.4	77.8	54.7	0.3	1.1	0.4	612	177	74	72	26	4	18	50	+35
12	Alex Len A. Len	10.7	8.3	46	2024-25	TOT	1.6	2.1	0.8	0.2	0.5	0.7	1.4	50.8	0.0	0.2	22.2	0.2	0.4	47.1	52.5	0.8	1.2	0.4	380	74	95	38	9	21	20	56	-153
13	Kevin Love K. Love	16.2	10.9	23	2024-25	MIA	5.3	4.1	1.0	0.7	0.2	1.8	5.0	35.7	1.0	2.9	35.8	0.7	1.0	69.6	48.8	1.0	3.1	0.6	251	122	94	22	15	4	14	21	-25
14	Kyle Lowry K. Lowry	9.9	18.8	35	2024-25	PHI	3.9	1.9	2.7	0.9	0.3	1.2	3.3	35.0	0.8	2.5	33.0	0.8	0.9	81.8	52.5	0.3	1.6	0.6	659	138	67	96	33	11	21	62	-71
15	Patty Mills P. Mills	8.3	11.1	29	2024-25	TOT	3.8	0.8	0.9	0.4	0.1	1.2	3.3	37.5	0.9	2.6	34.7	0.4	0.5	92.9	54.3	0.1	0.6	0.6	321	111	22	26	13	3	17	24	-15
16	Markieff Morris M. Morris	5.9	11.0	15	2024-25	TOT	3.7	1.5	1.4	0.1	0.2	1.4	4.7	30.0	0.6	2.4	25.0	0.3	0.4	83.3	38.5	0.2	1.3	0.3	165	56	23	21	2	3	5	16	-28
17	Mason Plumlee M. Plumlee	14.9	17.6	74	2024-25	PHX	4.5	6.1	1.8	0.4	0.6	1.7	2.7	61.9	0.0	0.1	0.0	1.1	1.7	64.8	64.5	1.6	4.6	0.8	1,300	333	455	134	33	47	59	154	+54
18	Garrett Temple G. Temple	8.5	8.1	28	2024-25	TOR	1.9	1.0	1.1	0.6	0.1	0.6	2.1	30.0	0.2	1.0	21.4	0.4	0.4	91.7	40.6	0.3	0.7	0.4	227	53	29	31	17	2	10	23	-28
19	Tristan Thompson T. Thompson	9.1	8.2	40	2024-25	CLE	1.7	3.4	0.6	0.1	0.3	0.8	1.8	43.7	0.0	0.1	0.0	0.2	0.8	23.3	41.0	0.8	2.6	0.4	328	69	134	24	2	11	14	36	-85
20	Jonas Valančiūnas J. Valančiūnas	20.8	18.8	81	2024-25	TOT	10.4	7.7	2.0	0.5	0.6	4.3	7.7	55.0	0.1	0.5	21.6	1.8	2.0	87.9	60.2	2.3	5.4	1.5	1,524	843	627	164	37	46	120	181	-304
21	Seth Curry S. Curry	12.2	15.6	68	2024-25	CHA	6.5	1.7	0.9	0.4	0.1	2.4	5.0	47.8	1.2	2.7	45.6	0.5	0.6	84.6	61.6	0.4	1.3	0.5	1,062	444	113	60	27	7	32	59	-171
22	Danté Exum D. Exum	13.6	18.6	20	2024-25	DAL	8.7	1.7	2.8	0.6	0.2	3.2	6.7	47.8	1.2	2.7	43.4	1.2	1.6	74.2	58.9	0.2	1.5	1.1	372	174	33	56	12	3	22	34	-48
23	Doug McDermott D. McDermott	9.5	8.1	42	2024-25	SAC	3.5	0.5	0.2	0.1	0.0	1.2	2.8	42.7	1.0	2.4	43.6	0.1	0.1	60.0	61.7	0.1	0.5	0.1	342	147	22	7	4	2	6	30	+27
24	Dario Šarić D. Šarić	7.7	13.1	16	2024-25	DEN	3.5	3.1	1.4	0.4	0.1	1.3	3.6	36.2	0.4	1.6	26.9	0.4	0.6	70.0	44.9	0.9	2.3	0.9	210	56	50	23	7	1	15	19	-49
25	Gary Harris G. Harris	6.9	14.8	48	2024-25	ORL	3.0	1.3	0.6	0.5	0.3	1.1	2.8	38.3	0.8	2.1	35.6	0.1	0.3	58.3	52.4	0.4	0.9	0.4	711	145	64	30	26	12	17	45	+85