Sam Cassell has the most points by a player off the bench in an NBA Finals game, with 31 points against the Magic on June 9, 1995.

Interpreted as:

top 10 bench points by a player in a finals game

	NAME	PTS	DATE	SEASON	SERIES	TM		OPP	MIN	REB	AST	STL	BLK	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	TS%	OREB	DREB	TOV	PF	+/-
1	Sam Cassell S. Cassell	31	6/9/1995	1994-95	NBA Finals	HOU	@	ORL	30	1	3	3	0	8	12	66.7	4	6	66.7	11	12	91.7	89.7	0	1	2	4
2	Fred Brown F. Brown	30	5/21/1978	1977-78	NBA Finals	SEA	vs	WAS	33	1	3	1	0	13	30	43.3				4	4	100.0	47.2	1	0	1	3
3	Jason Terry J. Terry	27	6/12/2011	2010-11	NBA Finals	DAL	@	MIA	34	3	2	2	0	11	16	68.8	3	7	42.9	2	4	50.0	76.0	1	2	3	1	+13
4	Manu Ginobili M. Ginobili	27	6/14/2007	2006-07	NBA Finals	SAS	@	CLE	33	5	3	1	0	8	19	42.1	3	9	33.3	8	11	72.7	56.6	1	4	1	5	+13
5	Scott Wedman S. Wedman	26	5/27/1985	1984-85	NBA Finals	BOS	vs	LAL	23	5	2	2	0	11	11	100.0	4	4	100.0	0	2	0.0	109.4	1	4	1	4
6	Larry Wright L. Wright	26	5/20/1979	1978-79	NBA Finals	WAS	vs	SEA	23	3	2	1	0	12	18	66.7				2	3	66.7	67.3	1	2	0	5
7	Fred Brown F. Brown	26	6/2/1978	1977-78	NBA Finals	SEA	vs	WAS	26	2	0	0	0	12	20	60.0				2	2	100.0	62.3	0	2	1	2
8	Manu Ginobili M. Ginobili	25	6/10/2007	2006-07	NBA Finals	SAS	vs	CLE	28	6	2	3	0	5	11	45.5	4	6	66.7	11	11	100.0	78.9	0	6	3	5	+17
9	Kevin McHale K. McHale	25	5/27/1984	1983-84	NBA Finals	BOS	vs	LAL	39	8	1	1	3	10	16	62.5	0	1	0.0	5	6	83.3	67.1	4	4	2	3
10	Kelly Olynyk K. Olynyk	24	10/2/2020	2019-20	NBA Finals	MIA	@	LAL	37	9	2	0	0	9	16	56.3	3	7	42.9	3	5	60.0	65.9	1	8	2	5	-3
11	Gary Neal G. Neal	24	6/11/2013	2012-13	NBA Finals	SAS	vs	MIA	25	4	3	0	0	9	17	52.9	6	10	60.0	0	0		70.6	0	4	0	0	+21
12	Austin Croshere A. Croshere	24	6/9/2000	1999-00	NBA Finals	IND	@	LAL	25	6	1	1	2	6	15	40.0	0	2	0.0	12	12	100.0	59.2	4	2	0	4	-6
13	Mike Miller M. Miller	23	6/21/2012	2011-12	NBA Finals	MIA	vs	OKC	23	5	0	1	0	7	11	63.6	7	8	87.5	2	2	100.0	96.8	0	5	0	4	+14
14	Bob McAdoo B. McAdoo	23	6/6/1982	1981-82	NBA Finals	LAL	@	PHI	27	4	1	1	5	11	14	78.6	0	0		1	2	50.0	77.3	1	3	4	5
15	John Havlicek J. Havlicek	23	5/27/1976	1975-76	NBA Finals	BOS	vs	PHX	34	4	3	0	0	9	18	50.0				5	7	71.4	54.6	1	3		1
16	Fred VanVleet F. VanVleet	22	6/13/2019	2018-19	NBA Finals	TOR	@	GSW	34	2	0	1	0	6	14	42.9	5	11	45.5	5	5	100.0	67.9	1	1	1	1	-10
17	Lucious Harris L. Harris	22	6/12/2002	2001-02	NBA Finals	NJN	vs	LAL	29	3	2	0	0	9	13	69.2	1	1	100.0	3	4	75.0	74.5	2	1	0	1	-4
18	Michael Cooper M. Cooper	22	5/30/1985	1984-85	NBA Finals	LAL	@	BOS	28	4	5	1	0	8	9	88.9	1	2	50.0	5	6	83.3	94.5	0	4	0	2
19	Bruce Brown B. Brown	21	6/9/2023	2022-23	NBA Finals	DEN	@	MIA	30	4	2	1	1	8	11	72.7	3	5	60.0	2	3	66.7	85.2	0	4	0	1	0
20	Derrick White D. White	21	6/2/2022	2021-22	NBA Finals	BOS	@	GSW	32	1	3	0	0	6	11	54.5	5	8	62.5	4	4	100.0	82.3	0	1	2	3	+25
21	Ray Allen R. Allen	21	6/16/2013	2012-13	NBA Finals	MIA	@	SAS	30	4	1	0	0	7	10	70.0	4	4	100.0	3	3	100.0	92.8	0	4	0	4	-12
22	James Harden J. Harden	21	6/14/2012	2011-12	NBA Finals	OKC	vs	MIA	35	4	2	1	0	7	11	63.6	2	3	66.7	5	7	71.4	74.6	0	4	2	3	+13
23	Jason Terry J. Terry	21	6/9/2011	2010-11	NBA Finals	DAL	vs	MIA	30	4	6	0	0	8	12	66.7	3	5	60.0	2	2	100.0	81.5	0	4	2	1	+1
24	Leon Powe L. Powe	21	6/8/2008	2007-08	NBA Finals	BOS	vs	LAL	15	2	0	0	0	6	7	85.7	0	0		9	13	69.2	82.5	1	1	0	4	+6
25	Robert Horry R. Horry	21	6/19/2005	2004-05	NBA Finals	SAS	@	DET	32	7	2	0	0	7	12	58.3	5	6	83.3	2	3	66.7	78.8	5	2	3	5	-4