Isaiah Stewart had the most double-doubles by a rookie in 2020-21, with 8 double-doubles.

	NAME	DD2	SEASON	TM	GP	MPG	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	Isaiah Stewart I. Stewart	8	2020-21	DET	68	21.4	7.9	6.7	0.9	0.6	1.3	3.3	6.0	55.3	0.3	0.9	33.3	0.9	1.4	69.6	59.7	2.3	4.3	1.0	1,455	537	453	59	39	86	67	184	-60
2	LaMelo Ball L. Ball	7	2020-21	CHA	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	313	81	18	145	136	-84
3	Tyrese Haliburton T. Haliburton	5	2020-21	SAC	58	30.1	13.0	3.0	5.3	1.3	0.5	5.0	10.7	47.2	2.1	5.1	40.9	0.8	1.0	85.7	58.5	0.7	2.3	1.6	1,746	753	173	309	77	28	92	83	-180
4	KJ Martin	4	2020-21	HOU	45	23.7	9.3	5.4	1.1	0.7	0.9	3.6	7.1	50.9	0.8	2.1	36.5	1.3	1.9	71.4	59.0	1.6	3.8	0.8	1,068	419	242	48	30	41	38	89	-283
5	Patrick Williams P. Williams	3	2020-21	CHI	71	27.9	9.2	4.6	1.4	0.9	0.6	3.6	7.4	48.3	0.8	1.9	39.1	1.3	1.8	72.8	56.2	0.9	3.7	1.4	1,983	655	327	99	64	46	98	126	-292
6	James Wiseman J. Wiseman	3	2020-21	GSW	39	21.4	11.5	5.8	0.7	0.3	0.9	4.9	9.4	51.9	0.3	1.0	31.6	1.4	2.2	62.8	55.2	1.4	4.4	1.5	836	448	226	26	11	36	60	121	-183
7	Saddiq Bey S. Bey	3	2020-21	DET	70	27.3	12.2	4.5	1.4	0.7	0.2	4.0	9.9	40.4	2.5	6.6	38.0	1.8	2.1	84.4	56.7	0.6	3.9	0.9	1,909	857	318	95	52	14	60	110	-213
8	Anthony Edwards A. Edwards	3	2020-21	MIN	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	211	82	36	160	129	-228
9	Precious Achiuwa P. Achiuwa	3	2020-21	MIA	61	12.1	5.0	3.4	0.5	0.3	0.5	2.0	3.7	54.4	0.0	0.0	0.0	0.9	1.8	50.9	55.0	1.2	2.2	0.7	737	304	208	29	20	28	43	91	-116
10	RJ Hampton	3	2020-21	TOT	51	17.4	6.9	3.5	1.7	0.4	0.2	2.7	6.1	43.5	0.5	1.7	31.0	1.1	1.6	67.1	50.7	0.6	2.9	1.0	888	354	179	87	21	10	53	61	-284
11	Jae'Sean Tate J. Tate	3	2020-21	HOU	70	29.2	11.3	5.3	2.5	1.2	0.5	4.5	8.9	50.6	0.9	2.8	30.8	1.5	2.1	69.4	57.6	1.9	3.5	1.4	2,043	794	374	178	85	36	98	222	-189
12	Naji Marshall N. Marshall	3	2020-21	NOP	32	21.9	7.7	4.6	2.8	0.8	0.3	2.6	6.5	39.2	0.9	2.6	34.9	1.7	2.3	70.7	50.8	0.5	4.2	1.2	700	246	148	88	26	10	38	58	-28
13	Onyeka Okongwu O. Okongwu	2	2020-21	ATL	50	12.0	4.6	3.3	0.4	0.5	0.7	1.9	3.0	64.4	0.0	0.1	0.0	0.7	1.1	63.2	65.5	1.2	2.0	0.6	601	228	163	18	23	33	29	100	-89
14	Jordan Nwora J. Nwora	2	2020-21	MIL	30	9.1	5.7	2.0	0.2	0.6	0.3	2.1	4.5	45.9	0.9	2.1	45.2	0.6	0.8	76.0	58.6	0.3	1.7	0.8	274	171	60	7	17	8	24	22	-3
15	Xavier Tillman Sr. X. Tillman Sr.	2	2020-21	MEM	59	18.4	6.6	4.3	1.3	0.7	0.6	2.8	5.1	55.9	0.4	1.1	33.8	0.6	0.9	64.2	60.5	1.3	3.1	0.8	1,085	390	256	75	44	33	45	116	+33
16	Deni Avdija D. Avdija	2	2020-21	WAS	54	23.3	6.3	4.9	1.2	0.6	0.3	2.4	5.8	41.7	1.0	3.1	31.5	0.5	0.8	64.4	51.5	0.4	4.4	0.6	1,257	342	262	63	32	15	33	140	-81
17	Cameron Oliver C. Oliver	1	2020-21	HOU	4	21.8	10.8	5.3	1.3	0.5	1.0	4.8	8.3	57.6	1.0	3.3	30.8	0.3	1.0	25.0	61.9	1.3	4.0	0.8	87	43	21	5	2	4	3	11	-11
18	Dylan Windler D. Windler	1	2020-21	CLE	31	16.5	5.2	3.5	1.1	0.6	0.4	1.8	4.2	43.8	0.8	2.5	33.8	0.7	0.9	77.8	56.7	0.6	2.8	1.0	513	161	107	33	19	12	32	37	-62
19	Isaac Okoro I. Okoro	1	2020-21	CLE	67	32.4	9.6	3.1	1.9	0.9	0.4	3.5	8.3	42.0	0.9	3.2	29.0	1.7	2.3	72.6	51.4	1.0	2.1	1.3	2,173	646	206	128	62	24	86	185	-407
20	Paul Reed P. Reed	1	2020-21	PHI	26	6.8	3.4	2.3	0.5	0.4	0.5	1.6	3.0	53.8	0.0	0.2	0.0	0.2	0.3	50.0	54.0	1.2	1.2	0.5	177	88	61	12	10	13	12	29	+36
21	Daniel Oturu D. Oturu	1	2020-21	LAC	30	5.4	1.8	1.6	0.3	0.1	0.2	0.7	1.7	42.3	0.0	0.2	20.0	0.3	0.4	75.0	47.1	0.7	0.9	0.3	161	54	48	10	4	7	9	24	+10
22	Malachi Flynn M. Flynn	1	2020-21	TOR	47	19.7	7.5	2.5	2.9	0.8	0.1	2.7	7.2	37.4	1.1	3.6	32.1	1.0	1.2	80.4	48.4	0.2	2.3	0.9	927	353	116	137	38	7	43	68	-99
23	Reggie Perry R. Perry	1	2020-21	BKN	26	8.1	3.0	2.8	0.5	0.2	0.2	1.2	3.0	41.0	0.2	0.8	19.0	0.4	0.5	76.9	46.6	1.0	1.8	0.6	211	78	73	14	6	6	15	40	-35
24	Jalen Smith J. Smith	1	2020-21	PHX	27	5.8	2.0	1.4	0.1	0.0	0.1	0.8	1.9	44.0	0.1	0.6	23.5	0.2	0.3	71.4	49.9	0.3	1.1	0.3	156	53	37	4	1	4	7	16	-16
25	Lamar Stevens L. Stevens	1	2020-21	CLE	40	12.5	4.1	2.4	0.6	0.4	0.3	1.6	3.4	45.6	0.1	0.6	16.0	0.9	1.3	72.5	52.1	0.6	1.8	0.6	499	165	96	25	17	13	23	53	-115