Jewell Loyd has posted the most points in a first quarter, with 22 points against the Mercury on September 17, 2021.

Interpreted as:

most points by a player in a 1 quarter all-time

	NAME	PTS	QUARTER	DATE	TM		OPP	MIN	REB	AST	STL	BLK	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	TS%	OREB	DREB	TOV	PF	+/-
1	Jewell Loyd J. Loyd	22	1Q	9/17/2021	SEA	vs	PHX	10	0	3	0	0	8	9	88.9	4	4	100.0	2	2	100.0	111.3	0	0	1	0	+9
2	Sami Whitcomb S. Whitcomb	19	1Q	7/7/2025	PHX	vs	DAL	9	1	1	0	0	7	9	77.8	4	5	80.0	1	3	33.3	92.1	0	1	0	0	+11
3	Breanna Stewart B. Stewart	19	1Q	5/21/2023	NYL	vs	IND	10	4	2	1	0	6	7	85.7	4	5	80.0	3	3	100.0	114.2	0	4	0	0	+22
4	Maya Moore M. Moore	19	1Q	5/23/2014	MIN	@	TUL	10	1	0	0	0	7	10	70.0	3	4	75.0	2	2	100.0	87.3	1	0	1	1	+14
5	DeWanna Bonner D. Bonner	19	1Q	7/3/2012	PHX	@	SAN	10	2	0	2	0	6	9	66.7	2	3	66.7	5	5	100.0	84.8	0	2	3	1	+7
6	Deanna Nolan D. Nolan	19	1Q	7/18/2008	DET	@	WAS	10	1	2	1	0	8	9	88.9	2	2	100.0	1	1	100.0	100.6	0	1	0	0	+21
7	DeLisha Milton-Jones D. Milton-Jones	19	1Q	7/17/2008	LAS	@	PHX	9	1	2	1	0	6	6	100.0	4	4	100.0	3	3	100.0	129.8	0	1	1	2	+12
8	Liz Cambage L. Cambage	18	1Q	8/2/2018	DAL	@	IND	9	5	0	0	0	6	9	66.7	1	2	50.0	5	6	83.3	77.3	2	3	1	1	+2
9	Maya Moore M. Moore	18	1Q	7/21/2018	MIN	@	PHX	10	2	0	0	0	4	9	44.4	1	2	50.0	9	9	100.0	69.4	2	0	0	1	+7
10	Sylvia Fowles S. Fowles	18	1Q	8/1/2010	CHI	@	PHX	7	0	0	0	0	9	12	75.0	0	0		0	0		75.0	0	0	0	0	+10
11	Rhyne Howard R. Howard	17	1Q	9/5/2025	ATL	vs	LAS	10	0	1	1	0	5	10	50.0	5	8	62.5	2	2	100.0	78.1	0	0	1	1	+7
12	A'ja Wilson A. Wilson	17	1Q	7/29/2025	LVA	@	LAS	7	2	2	2	0	8	8	100.0	1	1	100.0	0	0		106.3	2	0	0	1	+17
13	Rickea Jackson R. Jackson	17	1Q	7/26/2025	LAS	@	NYL	10	1	0	1	0	6	7	85.7	3	4	75.0	2	2	100.0	107.9	0	1	0	1	+15
14	A'ja Wilson A. Wilson	17	1Q	5/14/2024	LVA	vs	PHX	9	4	0	0	1	7	10	70.0	0	1	0.0	3	3	100.0	75.1	1	3	0	1	+14
15	Jewell Loyd J. Loyd	17	1Q	9/10/2023	SEA	vs	LAS	10	2	2	0	0	5	11	45.5	4	7	57.1	3	3	100.0	69.0	0	2	1	0	+10
16	Breanna Stewart B. Stewart	17	1Q	8/26/2023	NYL	@	MIN	10	3	0	0	0	5	7	71.4	3	4	75.0	4	4	100.0	97.0	1	2	0	0	+8
17	Rhyne Howard R. Howard	17	1Q	7/2/2023	ATL	vs	LAS	10	1	0	0	0	6	8	75.0	1	3	33.3	4	4	100.0	87.1	0	1	1	0	+6
18	Sophie Cunningham S. Cunningham	17	1Q	7/7/2022	PHX	vs	NYL	9	0	0	0	0	7	8	87.5	3	4	75.0	0	0		106.3	0	0	0	1	+11
19	Rhyne Howard R. Howard	17	1Q	5/15/2022	ATL	@	IND	10	1	0	0	0	6	9	66.7	2	4	50.0	3	4	75.0	79.0	0	1	1	1	+1
20	Brittney Griner B. Griner	17	1Q	8/4/2019	PHX	vs	WAS	9	2	2	0	2	7	8	87.5	0	0		3	3	100.0	91.2	0	2	1	0	+5
21	Jewell Loyd J. Loyd	17	1Q	5/31/2018	SEA	vs	LVA	10	2	0	0	0	6	8	75.0	5	6	83.3	0	0		106.3	1	1	0	0	+24
22	Betty Lennox B. Lennox	17	1Q	8/11/2007	SEA	vs	WAS	10	2	1	0	0	6	7	85.7	0	0		5	6	83.3	88.2	1	1	0	1	+6
23	Sabrina Ionescu S. Ionescu	16	1Q	8/3/2025	NYL	@	CON	9	4	1	1	0	7	10	70.0	0	0		2	2	100.0	73.5	2	2	1	0	+1
24	Napheesa Collier N. Collier	16	1Q	6/14/2025	MIN	vs	LAS	10	5	4	0	0	7	9	77.8	2	3	66.7	0	0		88.9	2	3	0	0	+19
25	Sabrina Ionescu S. Ionescu	16	1Q	9/12/2024	NYL	@	DAL	10	3	2	0	0	6	9	66.7	4	5	80.0	0	0		88.9	0	3	2	0	+10