Courtney Vandersloot has the most assists in a playoff game, with 18 assists against the Sun on September 28, 2021.

Interpreted as:

most assists by a player in a playoff game

	NAME	AST	DATE	TM		OPP	MIN	PTS	REB	STL	BLK	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	TS%	OREB	DREB	TOV	PF	+/-
1	Courtney Vandersloot C. Vandersloot	18	9/28/2021	CHI	@	CON	44	12	10	4	2	4	11	36.4	0	0		4	6	66.7	44.0	0	10	4	0	+11
2	Sue Bird S. Bird	16	10/2/2020	SEA	@	LVA	31	2	5	0	0	1	5	20.0	0	3	0.0	0	0		20.0	0	5	3	3	+24
3	Courtney Vandersloot C. Vandersloot	15	10/17/2021	CHI	vs	PHX	38	10	9	0	2	4	13	30.8	0	3	0.0	2	2	100.0	36.0	2	7	1	0	+11
4	Alyssa Thomas A. Thomas	14	9/29/2023	CON	vs	NYL	38	23	9	0	0	11	17	64.7	0	0		1	1	100.0	65.9	3	6	3	2	-18
5	Courtney Vandersloot C. Vandersloot	14	10/13/2021	CHI	@	PHX	41	20	3	5	1	9	15	60.0	2	6	33.3	0	0		66.7	0	3	6	2	+3
6	Courtney Vandersloot C. Vandersloot	14	9/21/2015	CHI	vs	IND	32	5	5	0	0	2	8	25.0	0	1	0.0	1	1	100.0	29.6	1	4	4	6	-13
7	Sue Bird S. Bird	14	10/5/2004	SEA	vs	SAC	33	10	2	3	0	4	7	57.1	1	1	100.0	1	2	50.0	63.5	0	2	3	3	+13
8	Alyssa Thomas A. Thomas	13	9/23/2025	PHX	@	MIN	43	19	8	1	0	6	15	40.0	0	0		7	10	70.0	49.0	2	6	4	3	+13
9	Alyssa Thomas A. Thomas	13	9/25/2024	CON	vs	IND	40	19	5	1	0	9	17	52.9	0	0		1	1	100.0	54.5	1	4	1	0	+6
10	Alyssa Thomas A. Thomas	13	9/22/2024	CON	vs	IND	37	12	10	0	0	6	15	40.0	0	0		0	0		40.0	1	9	1	3	+19
11	Courtney Vandersloot C. Vandersloot	13	10/3/2021	CHI	vs	CON	37	7	5	1	1	3	8	37.5	0	2	0.0	1	2	50.0	39.4	2	3	2	0	+6
12	Courtney Vandersloot C. Vandersloot	13	9/25/2016	CHI	vs	ATL	34	21	1	4	0	9	14	64.3	3	6	50.0	0	0		75.0	1	0	4	4	+14
13	Alyssa Thomas A. Thomas	12	9/20/2023	CON	@	MIN	40	28	6	1	0	13	20	65.0	0	0		2	3	66.7	65.7	1	5	2	4	+15
14	Chelsea Gray C. Gray	12	9/4/2022	LVA	@	SEA	39	29	5	1	1	12	21	57.1	5	9	55.6	0	0		69.0	0	5	1	3	+19
15	Sue Bird S. Bird	12	8/28/2022	SEA	@	LVA	37	2	4	1	0	1	6	16.7	0	2	0.0	0	0		16.7	0	4	0	3	+2
16	Skylar Diggins S. Diggins	12	10/13/2021	PHX	vs	CHI	42	13	7	1	0	5	18	27.8	1	6	16.7	2	2	100.0	34.4	4	3	2	3	+1
17	Chelsea Gray C. Gray	12	9/28/2021	LVA	vs	PHX	30	17	3	1	0	7	13	53.8	1	2	50.0	2	2	100.0	61.2	0	3	1	0	+4
18	Courtney Vandersloot C. Vandersloot	12	9/15/2019	CHI	@	LVA	32	7	4	1	0	3	10	30.0	1	4	25.0	0	0		35.0	0	4	2	3	-2
19	Diana Taurasi D. Taurasi	12	8/21/2018	PHX	vs	DAL	30	26	0	2	0	8	15	53.3	6	12	50.0	4	4	100.0	77.6	0	0	0	2	+21
20	Temeka Johnson T. Johnson	12	9/5/2010	PHX	vs	SEA	30	15	4	2	0	7	15	46.7	1	3	33.3	0	0		50.0	1	3	2	5	+17
21	Penny Taylor P. Taylor	12	8/28/2010	PHX	@	SAN	33	12	6	2	0	3	9	33.3	0	3	0.0	6	6	100.0	51.5	1	5	3	2	+23
22	Sue Bird S. Bird	12	8/25/2010	SEA	vs	LAS	36	9	5	2	1	4	9	44.4	1	2	50.0	0	1	0.0	47.7	0	5	3	2	+17
23	Teresa Weatherspoon T. Weatherspoon	12	8/24/2002	NYL	vs	WAS	23	4	3	0	0	1	3	33.3	0	0		2	2	100.0	51.5	0	3	2	1	+9
24	Jennifer Azzi J. Azzi	12	8/24/2002	UTA	@	LAS	32	16	0	2	0	5	10	50.0	3	8	37.5	3	3	100.0	70.7	0	0	2	5	-12
25	Cynthia Cooper C. Cooper	12	8/30/1999	HOU	vs	LAS	40	23	7	0	2	7	15	46.7	2	7	28.6	7	9	77.8	60.7	0	7	0	0	+10