JS
Joanna Sakowicz Kostecka
Last ranked
#79622 pts · Jul 13, 2009
Career record24 - 4634.3% of 70 matches
At a glance
WTA rankingsLatest matchesWinner first
US Open · 2026-08-31 · Hard
Andrey Rublev6-7(5)6-7(0)6-06-27-6(5)Round of 128Otto Virtanen Wimbledon · 2026-06-29 · Grass
Arthur Fery5-77-6(3)6-36-3Round of 64Otto Virtanen Otto Virtanen6-43-66-7(8)6-27-6(9)Round of 128Ben Shelton s Hertogenbosch · 2026-06-06 · Grass
Kamil Majchrzak6-7(7)6-47-6(4)Round of 32Otto Virtanen Barcelona · 2026-04-13 · Clay
Carlos Alcaraz6-46-2Round of 32Otto Virtanen Bucharest · 2026-03-30 · Clay
Daniel Merida Aguilar7-6(4)5-77-5Round of 32Otto Virtanen Dubai · 2026-02-23 · Hard
Tallon Griekspoor6-36-4Round of 32Otto Virtanen
Most-played opponentsW - L
Nuno Borges1 - 2H2H
Anne Kremer0 - 2H2H
Kristie Boogert1 - 1H2H
Daniel Altmaier1 - 1H2H
Season by seasonW - L · titles
| Year | W | L | Win % | Titles | |
|---|---|---|---|---|---|
| 2026 | 3 | 6 | 33% | - | |
| 2025 | 4 | 8 | 33% | - | |
| 2024 | 4 | 7 | 36% | - | |
| 2023 | 4 | 5 | 44% | - | |
| 2022 | 1 | 2 | 33% | - | |
| 2021 | 1 | 0 | 100% | - | |
| 2020 | 1 | 1 | 50% | - | |
| 2005 | 0 | 4 | 0% | - | |
| 2004 | 0 | 2 | 0% | - | |
| 2003 | 2 | 4 | 33% | - |
Recent matches last 20
All matches| Date | Tournament | Round | Surface | Result | Opponent | Score |
|---|---|---|---|---|---|---|
| 2026-08-31 | US Open | Round of 128 | Hard | L | Andrey Rublev | 6-7(5)6-7(0)6-06-27-6(5) |
| 2026-06-29 | Wimbledon | Round of 64 | Grass | L | Arthur Fery | 5-77-6(3)6-36-3 |
| 2026-06-29 | Wimbledon | Round of 128 | Grass | W | Ben Shelton | 6-43-66-7(8)6-27-6(9) |
| 2026-06-06 | s Hertogenbosch | Round of 32 | Grass | L | Kamil Majchrzak | 6-7(7)6-47-6(4) |
| 2026-04-13 | Barcelona | Round of 32 | Clay | L | Carlos Alcaraz | 6-46-2 |
| 2026-03-30 | Bucharest | Round of 32 | Clay | L | Daniel Merida Aguilar | 7-6(4)5-77-5 |
| 2026-02-23 | Dubai | Round of 32 | Hard | L | Tallon Griekspoor | 6-36-4 |
| 2026-02-07 | Davis Cup WG1 PO: HKG vs FIN | Round Robin | Hard | W | Coleman Wong | 7-56-2 |
| 2026-02-07 | Davis Cup WG1 PO: HKG vs FIN | Round Robin | Hard | W | Siu Chi Nicholas Cheng | 6-06-1 |
| 2025-09-13 | Davis Cup WG1 R1: BUL vs FIN | Round Robin | Clay | L | Alexander Vasilev | 6-37-5 |
| 2025-06-09 | s Hertogenbosch | Round of 32 | Grass | W | Tomas Martin Etcheverry | 7-6(6)7-5 |
| 2025-06-09 | s Hertogenbosch | Round of 16 | Grass | L | Nuno Borges | W/O |
| 2025-05-07 | Rome Masters | Round of 128 | Clay | W | Hamad Medjedovic | 6-46-4 |
| 2025-05-07 | Rome Masters | Round of 64 | Clay | L | Lorenzo Musetti | 6-36-2 |
| 2025-03-31 | Marrakech | Round of 32 | Clay | W | Daniel Altmaier | 6-24-67-6(3) |
| 2025-03-31 | Marrakech | Round of 16 | Clay | L | Roberto Carballes Baena | 6-46-4 |
| 2025-02-17 | Doha | Round of 32 | Hard | L | Nuno Borges | 7-6(6)6-3 |
| 2025-02-10 | Marseille | Round of 32 | Hard | W | Sebastian Korda | 6-7(3)7-6(4)6-4 |
| 2025-02-10 | Marseille | Round of 16 | Hard | L | Daniel Altmaier | 6-46-3 |
| 2025-01-31 | Davis Cup QLS R1: AUT vs FIN | Round Robin | Clay | L | Lukas Neumayer | 6-46-7(4)6-3 |