Player data updated: 2026-10-17 16:37 UTC

Kayla Day

USA Age 27 173 cm / 5'8" Plays: Left-Handed, Two-Handed Backhand WTA Tour years active: 2016–2026

Kayla Day represents the United States on the WTA Tour and is ranked No. 119, having reached a career high of No. 84. She most recently defeated Ena Koike in the Japan Women's Open first qualifying round on October 17, 2026. Her next scheduled opponent is Maya Joint in the Japan Women's Open first qualifying round.

Singles ranking

119

Career singles high

84 (Apr 1, 2024)

Elo peak

1637 (46th percentile)

Singles record

10–30 (25.0%)

Singles titles

Prize money

$1,614,354

YTD W-L

3–6

Records cover recorded main-draw singles results in TennisDB's WTA event archive, including credited walkovers; qualifying is shown separately below.

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WTA Matches full match log →

Kayla Day's recent, live, and scheduled WTA matches
Opponent	Score	Result	H2H	Match Data	Date	Round	Tournament	Category	Surface
Maya Joint #92	Scheduled	—	H2H	Match data	Oct 18, 2026	Q1 Q	Japan Women's Open	WTA 250	Hard
Ena Koike #318	7-5 6-3	W	H2H	Match data	Oct 17, 2026	Q1 Q	Japan Women's Open	WTA 250	Hard
Liudmila Samsonova #50	6-7(4) 6-2 6-7(5)	L	H2H	Match data	Sep 17, 2026	R16	Guadalajara Open	WTA 500	Hard
Elvina Kalieva #113	7-6(9) 6-4	W	H2H	Match data	Sep 14, 2026	R32	Guadalajara Open	WTA 500	Hard
Julieta Pareja #284	3-6 1-6	L	H2H	Match data	Aug 24, 2026	Q1 Q	US Open	Grand Slam	Hard

Qualifying matches are shown here but excluded from main-draw summaries and leaderboards.

Rivals all rivalries →

Kayla Day's most-played WTA rivals
Opponent	W	L	M	Last Played	H2H
Madison Keys	1	2	3	Jun 30, 2026	H2H
Caroline Dolehide	0	2	2	Apr 3, 2024	H2H
Marie Bouzkova	0	2	2	Oct 12, 2023	H2H
Garbiñe Muguruza	0	2	2	Aug 4, 2017	H2H
Liudmila Samsonova	0	1	1	Sep 17, 2026	H2H

Career Results

Kayla Day career results by season
Season	Age	Type	W	L	M	Win %	Start Rank	End Rank
2016	16	Qualifying Q	2	1	3	66.7%	—	—
2016	16	WTA	1	2	3	33.3%	996	198
2017	17	Qualifying Q	2	5	7	28.6%	—	—
2017	17	WTA	3	5	8	37.5%	194	150
2018	18	Qualifying Q	1	2	3	33.3%	—	—
2018	18	WTA	0	2	2	0.0%	151	313
2019	19	Qualifying Q	1	1	2	50.0%	—	—
2022	22	Qualifying Q	4	0	4	100.0%	—	—
2022	22	WTA	0	2	2	0.0%	379	197
2023	23	Qualifying Q	5	4	9	55.6%	—	—
2023	23	WTA	3	6	9	33.3%	198	87
2024	24	Qualifying Q	4	8	12	33.3%	—	—
2024	24	WTA	0	7	7	0.0%	89	241
2026	26	Qualifying Q	11	3	14	78.6%	—	—
2026	26	WTA	3	6	9	33.3%	257	119
Career		—	10	30	40	25.0%	—	—

Career Results by Surface

Kayla Day career results by season and surface
Season	Age	Type	Hard				Clay				Grass				Total
Season	Age	Type	W	L	M	Win %	W	L	M	Win %	W	L	M	Win %	W	L	M	Win %
2016	16	Qualifying Q	2	1	3	66.7%	—	—	—	—	—	—	—	—	2	1	3	66.7%
2016	16	WTA	1	2	3	33.3%	—	—	—	—	—	—	—	—	1	2	3	33.3%
2017	17	Qualifying Q	1	4	5	20.0%	1	1	2	50.0%	—	—	—	—	2	5	7	28.6%
2017	17	WTA	3	4	7	42.9%	0	1	1	0.0%	—	—	—	—	3	5	8	37.5%
2018	18	Qualifying Q	0	1	1	0.0%	1	1	2	50.0%	—	—	—	—	1	2	3	33.3%
2018	18	WTA	0	2	2	0.0%	—	—	—	—	—	—	—	—	0	2	2	0.0%
2019	19	Qualifying Q	—	—	—	—	1	1	2	50.0%	—	—	—	—	1	1	2	50.0%
2022	22	Qualifying Q	4	0	4	100.0%	—	—	—	—	—	—	—	—	4	0	4	100.0%
2022	22	WTA	0	2	2	0.0%	—	—	—	—	—	—	—	—	0	2	2	0.0%
2023	23	Qualifying Q	3	4	7	42.9%	2	0	2	100.0%	—	—	—	—	5	4	9	55.6%
2023	23	WTA	1	4	5	20.0%	2	2	4	50.0%	—	—	—	—	3	6	9	33.3%
2024	24	Qualifying Q	3	6	9	33.3%	—	—	—	—	1	2	3	33.3%	4	8	12	33.3%
2024	24	WTA	0	3	3	0.0%	0	3	3	0.0%	0	1	1	0.0%	0	7	7	0.0%
2026	26	Qualifying Q	6	2	8	75.0%	2	1	3	66.7%	3	0	3	100.0%	11	3	14	78.6%
2026	26	WTA	3	4	7	42.9%	0	1	1	0.0%	0	1	1	0.0%	3	6	9	33.3%
Career	—	—	8	21	29	27.6%	2	7	9	22.2%	0	2	2	0.0%	10	30	40	25.0%

Career Results by Opponent Rank

Kayla Day career results by season and opponent rank
Season	Age	1-10				11-30				31-100				100+				Total
Season	Age	W	L	M	Win %	W	L	M	Win %	W	L	M	Win %	W	L	M	Win %	W	L	M	Win %
2016	16	0	1	1	0.0%	0	0	—	—	1	1	2	50.0%	0	0	—	—	1	2	3	33.3%
2017	17	0	2	2	0.0%	1	0	1	100.0%	2	3	5	40.0%	0	0	—	—	3	5	8	37.5%
2018	18	0	0	—	—	0	0	—	—	0	0	—	—	0	2	2	0.0%	0	2	2	0.0%
2022	22	0	0	—	—	0	0	—	—	0	0	—	—	0	2	2	0.0%	0	2	2	0.0%
2023	23	0	0	—	—	1	3	4	25.0%	0	2	2	0.0%	2	1	3	66.7%	3	6	9	33.3%
2024	24	0	0	—	—	0	0	—	—	0	5	5	0.0%	0	2	2	0.0%	0	7	7	0.0%
2026	26	0	2	2	0.0%	0	1	1	0.0%	2	2	4	50.0%	1	1	2	50.0%	3	6	9	33.3%
Career		0	5	5	0.0%	2	4	6	33.3%	5	13	18	27.8%	3	8	11	27.3%	10	30	40	25.0%

Performance Stats

Kayla Day performance statistics by season
Season	Age	Sample	Aces/M	DFs/M	1st Sv%	1st Sv Pts%	2nd Sv Pts%	BP Saved%	BP Conv%	Svc Pts%	Ret Pts%
2016	16	3/3	1.0	3.7	59.0%	55.2%	30.3%	50.6%	66.7%	44.4%	38.1%
2017	17	8/8	3.4	5.5	48.8%	66.2%	45.1%	51.9%	31.0%	55.7%	38.9%
2018	18	2/2	5.0	6.0	48.1%	68.0%	33.7%	50.0%	35.0%	49.8%	33.8%
2022	22	2/2	4.0	2.5	66.5%	68.4%	39.1%	56.4%	50.0%	58.6%	36.6%
2023	23	9/9	2.2	3.0	58.1%	62.9%	43.8%	57.4%	39.7%	55.0%	39.3%
2024	24	7/7	3.7	3.3	66.8%	58.5%	42.2%	52.8%	37.1%	55.1%	36.5%
2026	26	9/9	4.7	4.6	64.4%	63.1%	45.7%	57.8%	48.9%	56.9%	40.7%
Career		40/40	3.4	4.1	59.2%	62.8%	42.5%	54.7%	41.9%	54.7%	38.5%

Advanced Stats

Kayla Day advanced statistics by season
Season	Age	Elo	P+	Serve+	Return+	PD	TPW%	Hard Elo	Clay Elo	Grass Elo	Set Win %	Set Margin	Dec. Set	Tiebreak	Pressure+	Schedule
2016	16	1540	107.8	-2.89	+0.53	0.685	42.0%	+14	—	—	0.0%	-4.75	—	—	—	-0.17
2017	17	1524	111.0	0.00	-2.37	0.877	47.2%	+13	—	—	45.0%	-0.85	1–3 (25%)	—	—	-0.14
2018	18	1487	91.2	-2.87	-2.16	0.673	41.8%	—	—	—	20.0%	-3.20	0–1	—	—	+0.16
2019	19	1463	99.5	—	—	—	—	—	—	—	—	—	—	—	—	—
2020	20	1450	—	—	—	—	—	—	—	—	—	—	—	—	—	—
2022	22	1535	99.5	-0.90	-1.76	0.884	47.0%	—	—	—	0.0%	-2.00	—	0–1	—	+0.44
2023	23	1565	118.9	-0.78	-1.35	0.874	47.7%	-48	+5	—	31.6%	-0.84	1–0	0–1	—	+0.61
2024	24	1436	102.7	-2.31	-3.54	0.812	46.2%	-2	+63	—	22.2%	-1.61	0–4 (0%)	1–3 (25%)	92.8	+0.78
2025	25	1474	—	—	—	—	—	—	—	—	—	—	—	—	—	—
2026	26	1624	130.6	-0.03	-0.33	0.945	49.1%	-18	—	—	40.9%	-0.50	1–3 (25%)	2–3 (40%)	99.1	-0.51
Career		1637	116.7	-0.99	-1.63	0.851	46.9%	-10	+30	—	31.5%	-1.26	3–11 (21%)	3–8 (27%)	90.7	+2.93

Tournament Results by Category

Grand Slams

Kayla Day Grand Slams results by season
Season	Age	AO	RG	W	USO	W-L Win %
2016	16	—	—	—	R64	1–1 (50%)
2017	17	R128	—	—	R128	0–2 (0%)
2023	23	—	R32	—	R128	2–2 (50%)
2024	24	R128	R128	Q1	—	0–3 (0%)
2026	26	—	Q1	R128	Q1	3–3 (50%)
W-L		0–2 (0%)	2–3 (40%)	3–2 (60%)	1–4 (20%)	6–11 (35%)

WTA 1000

Kayla Day WTA 1000 results by season
Season	Age	BEI	CIN	IW	MIA	CAN	GUA	W-L Win %
2017	17	—	Q1	R32	Q1	—	—	2–3 (40%)
2018	18	—	—	R128	—	—	—	0–1 (0%)
2022	22	—	—	—	—	—	R64	2–1 (67%)
2023	23	Q1	—	—	—	R64	—	2–2 (50%)
2024	24	—	—	R64	Q1	Q2	—	2–4 (33%)
2026	26	—	R128	R64	—	R64	—	7–3 (70%)
W-L		0–1 (0%)	2–2 (50%)	6–5 (55%)	0–2 (0%)	5–3 (62%)	2–1 (67%)	15–14 (52%)

WTA 500

Kayla Day WTA 500 results by season
Season	Age	BRI	SDG	PAN	WAS	BER	CHA	GUA	NEW	SAN	STA	W-L Win %
2016	16	—	—	—	—	—	—	—	R32	—	—	2–2 (50%)
2017	17	—	—	—	—	—	R64	—	Q1	—	R16	1–3 (25%)
2018	18	Q1	—	—	—	—	Q2	—	—	—	—	1–2 (33%)
2019	19	—	—	—	—	—	Q2	—	—	—	—	1–1 (50%)
2022	22	—	—	—	—	—	—	—	—	R32	—	2–1 (67%)
2023	23	—	Q2	R16	Q1	—	R64	—	—	—	—	4–4 (50%)
2024	24	—	Q2	—	—	Q2	R64	Q1	—	—	—	2–4 (33%)
2026	26	—	—	—	—	—	R64	R16	—	—	—	3–2 (60%)
W-L		0–1 (0%)	2–2 (50%)	1–1 (50%)	0–1 (0%)	1–1 (50%)	6–6 (50%)	1–2 (33%)	2–3 (40%)	2–1 (67%)	1–1 (50%)	16–19 (46%)

WTA 250

Kayla Day WTA 250 results by season
Season	Age	ACO	ASB	KOR	ATX	HOB	LIN	LUX	NOT	JAP	MOR	W-L Win %
2017	17	—	—	—	—	—	Q2	Q2	—	—	—	2–2 (50%)
2018	18	R32	—	—	—	—	—	—	—	—	—	0–1 (0%)
2023	23	—	—	R32	Q1	—	—	—	—	—	—	0–2 (0%)
2024	24	—	R32	—	—	Q1	—	—	R32	—	R32	0–4 (0%)
2026	26	—	—	—	Q1	—	—	—	—	Q1	—	1–1 (50%)
W-L		0–1 (0%)	0–1 (0%)	0–1 (0%)	0–2 (0%)	0–1 (0%)	1–1 (50%)	1–1 (50%)	0–1 (0%)	1–0 (100%)	0–1 (0%)	3–10 (23%)

Results show the best round reached per tournament and season.

WTA Ranking History full ranking history →

Current rank

119

Career high

Career-high date

Apr 1, 2024

First Top 100

Jul 24, 2023

First Top 50

—

First Top 20

—

First Top 10

—

Ranking History Matrix

Kayla Day ranking history by month and season
Season	Age	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2015	15	—	—	—	—	—	990	986	998	987	999	988	995
2016	16	995	632	685	671	435	442	444	374	274	207	196	198
2017	17	200	184	153	147	149	122	129	128	143	144	150	—
2018	18	139	148	183	179	189	235	246	296	278	323	321	313
2019	19	364	362	368	367	347	343	324	346	366	365	424	424
2020	20	423	451	480	—	—	—	—	467	474	473	477	479
2021	21	480	488	493	530	532	535	559	563	578	418	376	378
2022	22	370	357	349	335	334	265	231	211	194	176	196	197
2023	23	189	182	187	183	138	119	97	93	96	94	90	87
2024	24	92	89	86	84	99	129	155	164	170	196	238	241
2025	25	253	248	284	331	408	463	497	418	342	259	256	259
2026	26	257	185	162	152	145	137	127	117	112	119	—	—

Similar Players

Other WTA players with comparable peak level, era, career record, and career scale.

Kayla Day's most statistically similar WTA players
Player	Country	Peak ranking	Peak Elo	M	W	L	Win %	Prize money	Years	Rivalries	Match log
Emina Bektas (active player)	USA	#82	1,669	27	8	19	29.6%	$1,090,467	2021–2025	Rivalries	Match log
Olivia Gadecki (active player)	AUS	#83	1,697	35	10	25	28.6%	$1,929,371	2021–2026	Rivalries	Match log
Darja Semenistaja (active player)	LAT	#87	1,706	15	4	11	26.7%	$1,284,524	2023–2026	Rivalries	Match log
Brenda Fruhvirtova (active player)	CZE	#87	1,671	19	5	14	26.3%	$860,847	2022–2026	Rivalries	Match log
Victoria Jimenez Kasintseva (active player)	AND	#89	1,720	31	9	22	29.0%	$1,212,146	2021–2026	Rivalries	Match log
Harmony Tan (active player)	FRA	#90	1,680	41	12	29	29.3%	$1,779,803	2018–2026	Rivalries	Match log
Anca Todoni (active player)	ROU	#83	1,799	14	4	10	28.6%	$663,482	2024–2025	Rivalries	Match log
Ivana Jorovic	SRB	#86	1,658	33	11	22	33.3%	$808,797	2016–2021	Rivalries	Match log
Sinja Kraus (active player)	AUT	#75	1,770	27	7	20	25.9%	$1,276,689	2021–2026	Rivalries	Match log
Simona Waltert (active player)	SUI	#81	1,715	38	13	25	34.2%	$1,709,054	2019–2026	Rivalries	Match log
Elizabeth Mandlik (active player)	USA	#97	1,651	26	7	19	26.9%	$1,111,216	2022–2026	Rivalries	Match log
Chloe Paquet (active player)	FRA	#96	1,636	63	17	46	27.0%	$2,131,131	2016–2026	Rivalries	Match log

Frequently Asked Questions

How old is Kayla Day?: Kayla Day is 27 years old, born on September 28, 1999.
Which country does Kayla Day represent?: Kayla Day represents United States in TennisDB's WTA records.
How tall is Kayla Day?: Kayla Day is 173 cm / 5'8".
Does Kayla Day use a one-handed or two-handed backhand?: Kayla Day uses a two-handed backhand.
Is Kayla Day left-handed or right-handed?: Kayla Day plays left-handed.
How many Grand Slam singles titles has Kayla Day won?: Kayla Day has not won a Grand Slam singles title.
How many WTA 1000 titles has Kayla Day won?: TennisDB does not group any of Kayla Day's titles under the modern WTA 1000 category.
What is Kayla Day's highest WTA ranking?: Kayla Day's career-high WTA singles ranking is world No. 84, first achieved on April 1, 2024.
What is Kayla Day's career win-loss record?: Kayla Day has a career WTA singles record of 10 wins and 30 losses (25.0%).
How much career prize money has Kayla Day earned?: Kayla Day has earned at least $1,614,354 in career prize money from professional tennis.
Which seasons of Kayla Day's career appear in TennisDB?: Kayla Day appears in TennisDB's WTA main-tour match records from 2016 through 2026.
On which surface does Kayla Day have the highest recorded win rate?: Among surfaces with at least 20 recorded matches, Kayla Day's highest WTA main-draw win rate is on hard: 27.6% (8–21).
Who has Kayla Day faced most often?: Kayla Day's most frequent opponent is Madison Keys, with a head-to-head record of 1–2 across 3 meetings.