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

Sofia Costoulas

BEL Age 21 Plays: Right-Handed WTA Tour years active: 2026–2026

Sofia Costoulas represents Belgium on the WTA Tour and is ranked No. 159, having reached a career high of No. 134. She most recently lost to Tatiana Prozorova in the Singapore Tennis Open round of 32 on September 22, 2026.

Singles ranking

159

Career singles high

134 (Mar 30, 2026)

Elo peak

1618 (40th percentile)

Singles record

2–5 (28.6%)

Singles titles

Prize money

$454,986

YTD W-L

2–5

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 →

Sofia Costoulas's recent, live, and scheduled WTA matches
Opponent	Score	Result	H2H	Match Data	Date	Round	Tournament	Category	Surface
Tatiana Prozorova #180	7-5 6-7(2) 2-6	L	H2H	Match data	Sep 22, 2026	R32	Singapore Tennis Open	WTA 500	Hard
Elvina Kalieva #115	6-3 3-6 4-6	L	H2H	Match data	Aug 26, 2026	Q2 Q	US Open	Grand Slam	Hard
Jennifer Ruggeri #216	7-5 6-4	W	H2H	Match data	Aug 25, 2026	Q1 Q	US Open	Grand Slam	Hard
Ayla Aksu #216	6-2 3-6 4-6	L	H2H	Match data	Jul 20, 2026	R32	Prague Open	WTA 250	Hard
Ayla Aksu #214	7-5 6-2	W	H2H	Match data	Jul 19, 2026	Q2 Q	Prague Open	WTA 250	Hard

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

Rivals all rivalries →

Sofia Costoulas's most-played WTA rivals
Opponent	L	M	Last Played	H2H
Tatiana Prozorova	1	1	Sep 22, 2026	H2H
Ayla Aksu	1	1	Jul 20, 2026	H2H
Tereza Valentova	1	1	Jul 14, 2026	H2H
Hanne Vandewinkel	1	1	Mar 31, 2026	H2H
Iva Jovic	1	1	Jan 9, 2026	H2H

Career Results

Sofia Costoulas career results by season
Season	Age	Type	W	L	M	Win %	Start Rank	End Rank
2025	20	Qualifying Q	0	1	1	0.0%	—	—
2026	21	Qualifying Q	7	4	11	63.6%	—	—
2026	21	WTA	2	5	7	28.6%	143	159
Career		—	2	5	7	28.6%	—	—

Career Results by Surface

Sofia Costoulas 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 %
2025	20	Qualifying Q	—	—	—	—	0	1	1	0.0%	—	—	—	—	0	1	1	0.0%
2026	21	Qualifying Q	5	2	7	71.4%	2	1	3	66.7%	0	1	1	0.0%	7	4	11	63.6%
2026	21	WTA	2	4	6	33.3%	0	1	1	0.0%	—	—	—	—	2	5	7	28.6%
Career	—	—	2	4	6	33.3%	0	1	1	0.0%	—	—	—	—	2	5	7	28.6%

Career Results by Opponent Rank

Sofia Costoulas 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 %
2026	21	0	0	—	—	0	0	—	—	0	3	3	0.0%	2	2	4	50.0%	2	5	7	28.6%
Career		0	0	—	—	0	0	—	—	0	3	3	0.0%	2	2	4	50.0%	2	5	7	28.6%

Performance Stats

Sofia Costoulas 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%
2026	21	7/7	2.9	3.7	52.8%	66.2%	44.7%	58.3%	40.9%	56.6%	42.5%
Career		7/7	2.9	3.7	52.8%	66.2%	44.7%	58.3%	40.9%	56.6%	42.5%

Advanced Stats

Sofia Costoulas 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
2024	19	1481	—	—	—	—	—	—	—	—	—	—	—	—	—	—
2025	20	1523	97.0	—	—	—	—	—	—	—	—	—	—	—	—	—
2026	21	1516	114.3	-0.29	-0.23	0.979	49.5%	+29	—	—	38.9%	-0.33	1–3 (25%)	0–2	—	+0.74
Career		1618	109.5	-0.29	-0.23	0.979	49.5%	+29	—	—	38.9%	-0.33	1–3 (25%)	0–2	—	+10.57

Tournament Results by Category

Grand Slams

Sofia Costoulas Grand Slams results by season
Season	Age	AO	RG	W	USO	W-L Win %
2025	20	—	Q1	—	—	0–1 (0%)
2026	21	Q1	Q3	Q1	Q2	3–4 (43%)
W-L		0–1 (0%)	2–2 (50%)	0–1 (0%)	1–1 (50%)	3–5 (38%)

WTA 500

Sofia Costoulas WTA 500 results by season
Season	Age	SIN	W-L Win %
2026	21	R32	0–1 (0%)
W-L		0–1 (0%)	0–1 (0%)

WTA 250

Sofia Costoulas WTA 250 results by season
Season	Age	ASB	ATH	BOG	PRA	W-L Win %
2026	21	QF	R32	R32	R32	6–4 (60%)
W-L		4–1 (80%)	0–1 (0%)	0–1 (0%)	2–1 (67%)	6–4 (60%)

Results show the best round reached per tournament and season.

WTA Ranking History full ranking history →

Current rank

159

Career high

134

Career-high date

Mar 30, 2026

First Top 100

—

First Top 50

—

First Top 20

—

First Top 10

—

Ranking History Matrix

Sofia Costoulas ranking history by month and season
Season	Age	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2025	20	306	298	269	212	210	181	188	181	165	152	150	163
2026	21	143	141	134	151	144	156	158	155	159	159	—	—

Similar Players

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

Sofia Costoulas's most statistically similar WTA players
Player	Country	Peak ranking	Peak Elo	M	W	L	Win %	Prize money	Years	Rivalries	Match log
Susan Bandecchi (active player)	SUI	#137	1,627	7	2	5	28.6%	$742,501	2021–2026	Rivalries	Match log
Carol Young Suh Lee (active player)	USA	#136	1,652	4	1	3	25.0%	$374,867	2026–2026	Rivalries	Match log
Katherine Sebov (active player)	CAN	#136	1,620	13	4	9	30.8%	$715,269	2021–2026	Rivalries	Match log
Linda Klimovicova (active player)	POL	#129	1,620	3	1	2	33.3%	$544,319	2026–2026	Rivalries	Match log
Despina Papamichail (active player)	GRE	#143	1,585	17	5	12	29.4%	$1,080,492	2021–2026	Rivalries	Match log
Guiomar Maristany Zuleta De Reales (active player)	ESP	#145	1,679	4	1	3	25.0%	$588,820	2025–2026	Rivalries	Match log
Emerson Jones (active player)	AUS	#122	1,586	12	3	9	25.0%	$735,734	2025–2026	Rivalries	Match log
Mariam Bolkvadze (active player)	GEO	#151	1,616	7	2	5	28.6%	$875,971	2019–2026	Rivalries	Match log
Tyra Caterina Grant (active player)	ITA	#141	1,678	8	3	5	37.5%	$492,156	2025–2026	Rivalries	Match log
Mary Stoiana (active player)	USA	#114	1,688	8	2	6	25.0%	$573,146	2026–2026	Rivalries	Match log
Vendula Valdmannova (active player)	CZE	#147	1,625	3	1	2	33.3%	$194,186	2026–2026	Rivalries	Match log
En-Shuo Liang (active player)	TPE	#150	1,631	15	4	11	26.7%	$965,631	2018–2026	Rivalries	Match log

Frequently Asked Questions

How old is Sofia Costoulas?: Sofia Costoulas is 21 years old, born on April 2, 2005.
Which country does Sofia Costoulas represent?: Sofia Costoulas represents Belgium in TennisDB's WTA records.
Is Sofia Costoulas left-handed or right-handed?: Sofia Costoulas plays right-handed.
How many Grand Slam singles titles has Sofia Costoulas won?: Sofia Costoulas has not won a Grand Slam singles title.
How many WTA 1000 titles has Sofia Costoulas won?: TennisDB does not group any of Sofia Costoulas's titles under the modern WTA 1000 category.
What is Sofia Costoulas' highest WTA ranking?: Sofia Costoulas' career-high WTA singles ranking is world No. 134, first achieved on March 30, 2026.
What is Sofia Costoulas' career win-loss record?: Sofia Costoulas has a career WTA singles record of 2 wins and 5 losses (28.6%).
How much career prize money has Sofia Costoulas earned?: Sofia Costoulas has earned at least $454,986 in career prize money from professional tennis.
Which seasons of Sofia Costoulas's career appear in TennisDB?: Sofia Costoulas appears in TennisDB's WTA main-tour match records in 2026.
Who has Sofia Costoulas faced most often?: Sofia Costoulas' most frequent opponent is Tatiana Prozorova, with a head-to-head record of 0–1 across 1 meeting.