Sofia Costoulas

Sofia Costoulas

Country (sports)	Belgium
Born	(2005-04-02) 2 April 2005 Genk, Belgium
Plays	Right-handed (two-handed backhand)
Prize money	US $140,472
Singles
Career record	156–100
Career titles	4 ITF
Highest ranking	No. 184 (16 June 2025)
Current ranking	No. 184 (16 June 2025)
Grand Slam singles results
French Open	Q2 (2025)
Wimbledon	Q1 (2025)
Doubles
Career record	66–47
Career titles	3 ITF
Highest ranking	No. 229 (25 September 2023)
Current ranking	No. 489 (16 June 2025)
Last updated on: 16 June 2025.

Sofia Costoulas (Greek: Κωστούλα, romanized: Kostoula; born 2 April 2005) is a Belgian professional tennis player. She has career-high rankings of No. 184 in singles, achieved on 16 June 2025, and No. 102 in doubles, achieved on 26 May 2025.

Early life

Costoulas was born in Genk to a Greek-Congolese father and a Belgian mother. Her father was a professional footballer who played for Sint-Truidense V.V., K. Patro Eisden Maasmechelen, and C.S. Visé. She began playing tennis at the age of four. She trained at her local club in Genk, the Kim Clijsters Academy, and the Justine Henin Academy.

Junior career

In July 2021, she and Laura Hietaranta reached the girls' doubles final of Wimbledon, but lost to Kristina Dmitruk and Diana Shnaider. In September 2021, she reached the girls' singles third round of the US Open.

In January 2022, she won the J1 Traralgon Tennis International, defeating Kayla Cross in the final. Later that month, she reached the girls' singles final of the Australian Open, but lost to Petra Marčinko. In April 2022, she won back-to-back J1 titles in Vrsar and Plovdiv. The following month, she also won the JA International HTV Junior Open in Offenbach am Main.

Professional career

In December 2021, she reached back-to-back W15 finals in Monastir. In February 2022, she reached the semifinals of the W25 Copa Banco in Guayaquil. In October 2022, she won her first professional doubles title at the W25 tournament in Hua Hin, partnering Punnin Kovapitukted.

In April 2025, she won her biggest title to-date at the W75 Ladies Open Calvi Eaux de Zilia, defeating Tessah Andrianjafitrimo in the final. The following month, she reached the second round of the qualifying competition of the French Open, but ultimately failed to advance into the main draw.

Grand Slam singles performance timeline

Key

W

F

SF

QF

#R

RR

Q#

P#

DNQ

A

Z#

PO

G

S

B

NMS

NTI

P

NH

(W) winner; (F) finalist; (SF) semifinalist; (QF) quarterfinalist; (#R) rounds 4, 3, 2, 1; (RR) round-robin stage; (Q#) qualification round; (P#) preliminary round; (DNQ) did not qualify; (A) absent; (Z#) Davis/Fed Cup Zonal Group (with number indication) or (PO) play-off; (G) gold, (S) silver or (B) bronze Olympic/Paralympic medal; (NMS) not a Masters tournament; (NTI) not a Tier I tournament; (P) postponed; (NH) not held; (SR) strike rate (events won / competed); (W–L) win–loss record.

To avoid confusion and double counting, these charts are updated at the conclusion of a tournament or when the player's participation has ended.

Tournament	2025	SR	W–L
Australian Open	A	0 / 0	0–0
French Open	Q2	0 / 0	0–0
Wimbledon		0 / 0	0–0
US Open		0 / 0	0–0
Win–loss		0 / 0	0–0

ITF Circuit finals

Singles: 11 (4 titles, 7 runner-ups)

Legend W60/75 tournaments W40/50 tournaments W25/35 tournaments W15 tournaments

Finals by surface Hard (3–5) Clay (1–1)

Result	W–L	Date	Tournament	Tier	Surface	Opponent	Score
Loss	0–1	Feb 2021	ITF Sharm El Sheikh, Egypt	W15	Hard	Magali Kempen	3–6, 2–6
Loss	0–2	Dec 2021	ITF Monastir, Tunisia	W15	Hard	Eudice Chong	6–3, 4–6, 6–7(5)
Loss	0–3	Jan 2022	ITF Monastir, Tunisia	W15	Hard	Akvilė Paražinskaitė	5–7, 2–6
Loss	0–4	Jun 2022	ITF Gurugram, India	W25	Hard	Karman Thandi	4–6, 6–2, 1–6
Win	1–4	May 2023	ITF Feld am See, Austria	W25	Clay	Lara Salden	6–3, 6–1
Loss	1–5	Nov 2023	ITF Limassol, Cyprus	W25	Hard	Hanne Vandewinkel	2–6, 6–4, 4–6
Win	2–5	Dec 2023	ITF Limassol, Cyprus	W25	Hard	Silvia Ambrosio	6–1, 6–3
Loss	2–6	May 2024	ITF Klagenfurt, Austria	W35	Clay	Marie Benoît	1–6, 3–6
Win	3–6	Mar 2025	ITF Helsinki, Finland	W35	Hard (i)	Lily Miyazaki	6–3, 7–5
Win	4–6	Apr 2025	ITF Calvi, France	W75	Hard	Tessah Andrianjafitrimo	7–5, 6–1
Loss	4–7	May 2025	ITF Otočec, Slovenia	W50	Clay	Amarissa Tóth	3–6, 3–6

Doubles: 11 (3 titles, 8 runner-ups)

Legend W60 tournaments W40/50 tournaments W25/35 tournaments W15 tournaments

Finals by surface Hard (1–6) Clay (2–1) Carpet (0–1)

Result	W–L	Date	Tournament	Tier	Surface	Partner	Opponents	Score
Loss	1–0	Feb 2022	ITF Monastir, Tunisia	W15	Hard	Clervie Ngounoue	Kristina Dmitruk Maria Sholokhova	6–3, 2–6, [5–10]
Win	1–1	Oct 2022	ITF Hua Hin, Thailand	W25	Hard	Punnin Kovapitukted	Risa Ushijima Wi Hwi-won	6–1, 6–2
Loss	1–2	Mar 2023	ITF Pretoria, South Africa	W60	Hard	Dalila Spiteri	Mai Hontama Alice Tubello	3–6, 3–6
Loss	1–3	May 2023	ITF Feld am See, Austria	W25	Clay	Kayla Cross	Denisa Hindová Chiara Scholl	2–6, 0–6
Win	2–3	Jun 2023	ITF Troisdorf, Germany	W25	Clay	Lara Salden	Chiara Scholl Tilwith Di Girolami	7–6(4), 6–4
Win	3–3	Jun 2023	ITF Tainan, Taiwan	W25	Clay	Li Yu-yun	Lee Ya-hsin Lee Ya-hsuan	6–4, 6–4
Loss	3–4	Jul 2023	ITF Corroios, Portugal	W25	Hard	Lulu Sun	Talia Gibson Petra Hule	3–6, 6–3, [6–10]
Loss	3–5	Sep 2023	ITF Leiria, Portugal	W25	Hard	Jenny Dürst	Francisca Jorge Matilde Jorge	5–7, 6–7(5)
Loss	3–6	Feb 2024	ITF Pretoria, South Africa	W50	Hard	Hanne Vandewinkel	Lina Glushko Gabriela Knutson	6–7(5), 6–7(4)
Loss	3–7	Mar 2025	ITF Solarino, Italy	W35	Carpet	Katharina Hobgarski	Viktória Hrunčáková Katarína Kužmová	7–6(4), 4–6, [5–10]
Loss	3–8	Mar 2025	Open Nantes Atlantique, France	W50	Hard (i)	Talia Gibson	Martyna Kubka Lisa Zaar	3–6, 2–6

Junior Grand Slam tournament finals

Girls' singles: 1 (runner-up)

Result	Year	Tournament	Surface	Opponent	Score
Loss	2022	Australian Open	Hard	Petra Marčinko	5–7, 1–6

Girls' doubles: 1 (runner-up)

Result	Year	Tournament	Surface	Partner	Opponents	Score
Loss	2021	Wimbledon	Grass	Laura Hietaranta	Kristina Dmitruk Diana Shnaider	1–6, 2–6

External links

• Sofia Costoulas at the Women's Tennis Association
• Sofia Costoulas at the International Tennis Federation
• Sofia Costoulas at the Billie Jean King Cup
• Sofia Costoulas at Wimbledon
• Sofia Costoulas at ESPN.com