Cincinnati 
Sao Paulo 
Barranquilla 
Guadalajara 
Montreux 
Quebec City 
Kingston 1 
Prague 
Davis Сup Group I Tennis. Played Kostovic Teodora. Season 2026
Country 
Serbia. Ranking WTA 150.
Serbia. Ranking WTA 150. WTA - J&S Cup | ||||
|---|---|---|---|---|
| 03.08.2026 | First round | Kostovic Teodora — Kubka Martyna | 1:2 (6:7, 6:2, 1:6) |
|
 WTA - Rome ATV Open | ||||
| 16.07.2026 | Second round | Kostovic Teodora — Bronzetti Lucia | 0:2 (4:6, 4:6) |
|
| 14.07.2026 | First round | Kostovic Teodora — Ruggeri Jennifer | 2:0 (6:2, 6:3) |
|
 | ||||
| 11.07.2026 | Semi-finals | Gorgodze Ekaterine — Kostovic Teodora | 2:0 (7:6, 6:1) |
|
| 10.07.2026 | Quarter-finals | Kostovic Teodora — Zidansek Tamara | 2:0 (6:3, 6:0) |
|
| 09.07.2026 | Second round | Kostovic Teodora — Niemeier Jule | 2:1 (4:6, 7:5, 6:2) |
|
 WTA - Wimbledon | ||||
| 29.06.2026 | First round | Sabalenka Aryna — Kostovic Teodora | 2:0 (6:2, 6:3) |
|
| 25.06.2026 | Qialification final | Kostovic Teodora — Zhu Lin | 2:0 (6:3, 6:4) |
|
| 24.06.2026 | Qualifications - 2nd round | Sramkova Rebecca — Kostovic Teodora | 1:2 (6:4, 6:7, 4:6) |
|
 WTA - Makarska | ||||
| 02.06.2026 | First round | Waltert Simona — Kostovic Teodora | 2:0 (6:0, 6:3) |
|
 WTA - French Open | ||||
| 20.05.2026 | Qualifications - 2nd round | Kostovic Teodora — Quevedo Kaitlin | 1:2 (6:7, 6:3, 2:6) |
|
| 19.05.2026 | Qualifications - 1st round | Kostovic Teodora — Mandlik Elizabeth | 2:0 (6:2, 6:2) |
|
 WTA - Madrid | ||||
| 20.04.2026 | Qualifications - 1st round | Potapova Anastasia — Kostovic Teodora | 2:0 (6:4, 7:5) |
|
 WTA - | ||||
| 13.04.2026 | First round | Lamens Suzan — Kostovic Teodora | 2:0 (6:1, 7:6) |
|
| WTA - | ||||
| 27.03.2026 | Second round | Kostovic Teodora — Charaeva Alina | 1:2 (6:3, 3:6, 4:6) |
|
| 24.03.2026 | First round | Marcinko Petra — Kostovic Teodora | 0:2 (2:6, 3:6) |
|
 WTA - Antalya 3 | ||||
| 12.03.2026 | Second round | Erjavec Veronika — Kostovic Teodora | 2:1 (6:2, 4:6, 6:4) |
|
| 10.03.2026 | First round | Kostovic Teodora — Pigato Lisa | 2:1 (4:6, 6:4, 7:6) |
|
| WTA - Antalya 2 | ||||
| 03.03.2026 | First round | Riera Julia — Kostovic Teodora | 2:1 (7:6, 4:6, 6:3) |
|
| 02.03.2026 | Qialification final | Kostovic Teodora — Pigossi Laura | 2:0 (6:2, 6:3) |
|
| WTA - | ||||
| 21.02.2026 | Semi-finals | Golubic Viktorija — Kostovic Teodora | 2:1 (7:5, 1:6, 6:2) |
|
| 20.02.2026 | Quarter-finals | Kostovic Teodora — Jorge Francisca | 2:0 (6:4, 7:6) |
|
| 19.02.2026 | Second round | Koevermans Anouk — Kostovic Teodora | 0:2 (3:6, 3:6) |
|
| 17.02.2026 | First round | Sorribes Tormo Sara — Kostovic Teodora | 1:2 (6:4, 3:6, 5:7) |
|
 WTA - Abu Dhabi | ||||
| 31.01.2026 | Qualifications - 1st round | Baptiste Hailey — Kostovic Teodora | 2:1 (4:6, 6:3, 6:4) |
|
| ||||
| 26.01.2026 | First round | Tagger Lilli — Kostovic Teodora | 2:0 (6:1, 6:1) |
|
 WTA - Australian Open | ||||
| 14.01.2026 | Qualifications - 2nd round | Kostovic Teodora — Stakusic Marina | 0:2 (0:6, 2:6) |
|
| 12.01.2026 | Qualifications - 1st round | Kostovic Teodora — Mrdeza Tereza | 2:0 (6:0, 6:3) |
|
| WTA - Richard Luton Properties Canberra International | ||||
| 06.01.2026 | First round | Radivojevic Lola — Kostovic Teodora | 2:0 (6:4, 6:4) |
|
| 04.01.2026 | Qualifications - 1st round | Kostovic Teodora — Rosatello Camilla | 2:0 (6:3, 6:1) |
|