Katie Volynets and Sofia Costoulas will play each other in the qualifications of the U.S. Open for the 1st time in their career. They are scheduled to compete on Monday at 1:00 pm on Court 7. In the following lines you can find the head to head analysis and prediction.
Prediction, odds and live streaming
The pick for Tennis Tonic is Katie Volynets who should win in 2 sets.
Katie Volynets -> 1.36
Sofia Costoulas -> 3.04
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Prediction and head to head Katie Volynets vs. Sofia Costoulas
There is no head to head record between Katie Volynets and Sofia Costoulas since this will be the first time that they will play each other in the main tour.
Katie Volynets
23 - 21win/loss
89
56
| Year | Total | Hard | Clay | I.hard | Grass | Carpet |
|---|---|---|---|---|---|---|
| 2025 | 39-27 | 25-16 | 13-8 | 0-0 | 1-3 | 0-0 |
| 2024 | 46-24 | 23-16 | 18-6 | 0-0 | 5-2 | 0-0 |
| 2023 | 30-27 | 22-14 | 8-7 | 0-1 | 0-5 | 0-0 |
| 2022 | 36-26 | 19-15 | 13-7 | 0-0 | 4-4 | 0-0 |
| 2021 | 29-25 | 12-12 | 12-8 | 1-2 | 4-3 | 0-0 |
Ranked no. 107, Volynets will start her run at the U.S. Open after she played her last match in Cincinnati where she lost 6-4 3-6 6-3 to Gracheva in the 1st round on the 8th of August.
Katie has a compiled 22-21 win-loss record in 2025, 8-10 on hard (See FULL STATS).
The American’s best result of the season was getting to the final in the Oeiras.
Talking about her overall career, The American has an overall 222-162 record. She has a positive 122-92 record on hard.
Previously at the U.S. Open
Previously, her best result was reaching the 1st round in 2019, 2021, 2023 and 2024. See her history.
Sofia Costoulas
35 - 18win/loss
150
149
| Year | Total | Hard | Clay | I.hard | Grass | Carpet |
|---|---|---|---|---|---|---|
| 2025 | 49-26 | 20-10 | 9-4 | 17-9 | 0-1 | 3-2 |
| 2024 | 43-33 | 17-12 | 20-16 | 6-5 | 0-0 | 0-0 |
| 2023 | 44-29 | 24-13 | 17-12 | 3-4 | 0-0 | 0-0 |
| 2022 | 22-13 | 18-10 | 0-2 | 4-1 | 0-0 | 0-0 |
| 2021 | 15-12 | 14-5 | 1-7 | 0-0 | 0-0 | 0-0 |
Ranked no. 181 (career-high), Costoulas will start her run at the New York after she played her last match in the Warsaw where she lost 5-7 6-3 6-3 to Golubic in the 2nd round on the 30th of July.
The Belgian has an aggregate 35-17 win-loss record in 2025, 8-4 on hard (See FULL STATS).
Her best result of the current year was winning the title the W35 Helsinki where she overcame Yuriko Miyazaki in the final 6-3 7-5 and the W75 Calvi where she overcame Tessah Andrianjafitrimo in the final 7-5 6-1.
In terms of her career, Costoulas has an overall 161-105 record. She has a positive 81-44 record on hard.
Previously at the U.S. Open
Costoulas has never competed in this tournament before.
Upcoming matches in the draw
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- Heather WatsonWatson – Ekaterine GorgodzeGorgodze (0-0) – H2H and prediction
- Ana Sofia SanchezSofia Sanchez – Arianne HartonoHartono (0-1) – H2H and prediction
- Jodie Anna BurrageAnna Burrage – Patricia Maria TigMaria Tig (0-1) – H2H and prediction
- Carlota Martinez CirezMartinez Cirez – Arantxa RusRus (0-1) – H2H and prediction
- Guiomar Zuleta De RealesZuleta De Reales – (1-1) – H2H and prediction
- Dalma GalfiGalfi – (0-0) – H2H and prediction
- Fiona CrawleyCrawley – Louisa ChiricoChirico (0-0) – H2H and prediction
- Sada NahimanaNahimana – Manon LeonardLeonard (0-0) – H2H and prediction
- Paula OrmaecheaOrmaechea – Panna UdvardyUdvardy (4-0) – H2H and prediction
- Viktoriya TomovaTomova – Irene Burillo EscorihuelaBurillo Escorihuela (2-0) – H2H and prediction
- Jule NiemeierNiemeier – Daria GavrilovaGavrilova (0-1) – H2H and prediction
- Nuria BrancaccioBrancaccio – Priscilla HonHon (0-0) – H2H and prediction
- Varvara GrachevaGracheva – Madison BrengleBrengle (0-1) – H2H and prediction
- Kayla DayDay – Ena ShibaharaShibahara (0-0) – H2H and prediction
- Katie VolynetsVolynets – (0-0) – H2H and prediction
- Polona HercogHercog – Tessah AndrianjafitrimoAndrianjafitrimo (0-0) – H2H and prediction
- Jana FettFett – Joanna GarlandGarland (3-0) – H2H and prediction
- Justina MikulskyteMikulskyte – Kyoka OkamuraOkamura (0-0) – H2H and prediction
- Sachia VickeryVickery – (0-0) – H2H and prediction
- Kathinka Von DeichmannVon Deichmann – (0-2) – H2H and prediction
- Shuai ZhangZhang – (0-0) – H2H and prediction
- Berfu CengizCengiz – Sijia WeiWei (0-0) – H2H and prediction
- Bernarda PeraPera – (0-0) – H2H and prediction
- Laura PigossiPigossi – Tamara ZidansekZidansek (0-2) – H2H and prediction
- Astra SharmaSharma – (1-0) – H2H and prediction
- Carson BranstineBranstine – Xiyu WangWang (0-0) – H2H and prediction
- Oleksandra OliynykovaOliynykova – Lizette CabreraCabrera (0-0) – H2H and prediction
- Elizabeth MandlikMandlik – Jessika PonchetPonchet (1-1) – H2H and prediction
- Eva VedderVedder – (0-0) – H2H and prediction
- Iryna ShymanovichShymanovich – Sinja KrausKraus (1-0) – H2H and prediction
- Julia GrabherGrabher – (0-0) – H2H and prediction
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- Maria Lourdes CarleLourdes Carle – Carol ZhaoZhao (0-2) – H2H and prediction
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- Lauren DavisDavis – Hina InoueInoue (0-0) – H2H and prediction
- Daria SnigurSnigur – Simona WaltertWaltert (3-2) – H2H and prediction
- Katarzyna KawaKawa – Claire LiuLiu (0-0) – H2H and prediction
- Storm SandersSanders – Maddison InglisInglis (0-0) – H2H and prediction