Nate McMillan has the most blocks + assists by a rookie in a game, with 29 against the Los Angeles Clippers on February 23, 1987.

Interpreted as:

most blk+ast in a regular-season game by a rookie

	NAME	BLK+AST	BLK	AST	DATE	TM		OPP	MIN	PTS	REB	STL	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	TS%	OREB	DREB	TOV	PF	+/-
1	Nate McMillan N. McMillan	29	4	25	2/23/1987	SEA	vs	LAC	41	8	8	1	3	5	60.0	0	1	0.0	2	2	100.0	68.0	0	8	3	2
2	Ramon Sessions R. Sessions	25	1	24	4/14/2008	MIL	vs	CHI	44	20	8	1	7	12	58.3	0	0		6	7	85.7	66.3	2	6	2	2	-13
3	Ernie DiGregorio E. DiGregorio	25	0	25	1/1/1974	BUF	@	POR	48	20	9	2	9	22	40.9				2	2	100.0	43.7	3	6		4
4	Jamaal Tinsley J. Tinsley	24	1	23	11/22/2001	IND	vs	WAS	45	19	11	1	6	15	40.0	0	1	0.0	7	8	87.5	51.3	2	9	5	2	+5
5	Ennis Whatley E. Whatley	22	0	22	3/3/1984	CHI	vs	ATL	37	10	2	2	4	6	66.7	0	0		2	2	100.0	72.7	0	2	4	4
6	Ennis Whatley E. Whatley	22	0	22	1/14/1984	CHI	vs	NYK	41	8	5	4	3	10	30.0	0	0		2	2	100.0	36.8	3	2	3	1
7	Phil Ford P. Ford	22	0	22	2/21/1979	KCK	vs	MIL	44	26	5	5	12	16	75.0				2	3	66.7	75.1			6	5
8	Nate McMillan N. McMillan	21	0	21	3/31/1987	SEA	vs	SAC	34	6	3	3	3	5	60.0	0	0		0	0		60.0	1	2	2	4
9	Phil Ford P. Ford	21	0	21	2/23/1979	KCK	vs	PHX	45	22	3	3	8	16	50.0				6	8	75.0	56.4	0	3	4	3
10	Darren Collison D. Collison	20	0	20	3/8/2010	NOH	vs	GSW	46	16	1	3	7	12	58.3	2	3	66.7	0	2	0.0	62.1	1	0	7	1	+5
11	Jamaal Tinsley J. Tinsley	20	1	19	2/5/2002	IND	vs	DAL	56	18	4	2	5	16	31.3	4	9	44.4	4	6	66.7	48.3	1	3	4	4	+1
12	Jamaal Tinsley J. Tinsley	20	5	15	11/16/2001	IND	vs	MIN	51	12	9	6	3	16	18.8	0	3	0.0	6	6	100.0	32.2	3	6	1	6	-2
13	Brevin Knight B. Knight	20	0	20	11/22/1997	CLE	vs	WAS	37	13	2	4	4	6	66.7	0	0		5	6	83.3	75.2	0	2	3	4	+12
14	Negele Knight N. Knight	20	1	19	4/5/1991	PHX	@	GSW	43	22	7	1	7	17	41.2	0	1	0.0	8	10	80.0	51.4	2	5	6	4
15	Gary Grant G. Grant	20	0	20	4/6/1989	LAC	vs	POR	40	17	3	4	4	7	57.1	0	0		9	10	90.0	74.6	0	3	3	4
16	Darren Collison D. Collison	19	1	18	1/30/2010	NOH	@	MEM	47	17	6	0	4	11	36.4	0	0		9	10	90.0	55.2	1	5	5	2	+4
17	Damon Stoudamire D. Stoudamire	19	0	19	2/27/1996	TOR	@	HOU	41	17	3	4	7	19	36.8	3	7	42.9	0	0		44.7	0	3	3	3
18	Doug Overton D. Overton	19	1	18	12/1/1992	WAS	vs	SAS	40	18	4	2	9	15	60.0	0	0		0	0		60.0	1	3	3	0
19	Tim Hardaway T. Hardaway	19	0	19	1/8/1990	GSW	vs	DEN	34	19	10	1	8	12	66.7	0	0		3	3	100.0	71.3	1	9	3	2
20	Johnny Moore J. Moore	19	0	19	1/11/1981	SAS	vs	WAS	42	17	4	3	5	15	33.3	0	1	0.0	7	10	70.0	43.8				3
21	Kris Dunn K. Dunn	18	2	16	4/12/2017	MIN	@	HOU	32	10	2	1	5	13	38.5	0	2	0.0	0	0		38.5	0	2	3	4	+3
22	Brian Roberts B. Roberts	18	0	18	3/25/2013	NOH	vs	DEN	41	13	5	1	5	10	50.0	1	4	25.0	2	2	100.0	59.7	0	5	3	3	+21
23	Jamaal Tinsley J. Tinsley	18	0	18	12/13/2001	IND	vs	HOU	35	4	6	1	1	5	20.0	0	1	0.0	2	2	100.0	34.0	0	6	4	5	-3
24	Brevin Knight B. Knight	18	1	17	3/4/1998	CLE	vs	TOR	29	8	2	3	3	6	50.0	0	0		2	2	100.0	58.1	0	2	5	1	+26
25	Brevin Knight B. Knight	18	1	17	2/25/1998	CLE	vs	VAN	37	7	5	4	3	8	37.5	0	0		1	1	100.0	41.5	1	4	5	4	+10