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| 1/16-finals | Selekhmeteva O. | Kostovic T. | 2:0 (6:4, 6:3) | detalhes | 03.11.2026 | ||
| 1/16-finals | Timofeeva M. | Kostovic T. | 2:0 (6:4, 6:1) | detalhes | 26.10.2026 | ||
| Final | Zakharova A. | Kostovic T. | 0:2 (3:6, 2:6) | detalhes | 25.10.2026 | ||
| Semi-finals | Qu Y. | Kostovic T. | 1:2 (3:6, 6:0, 3:6) | detalhes | 24.10.2026 | ||
| 1/8-finals | Kostovic T. | Kubka M. | 0:2 (3:6, 4:6) | detalhes | 15.10.2026 | ||
| 1/16-finals | Jacquemot E. | Kostovic T. | 0:2 (5:7, 65:7) | detalhes | 13.10.2026 | ||
| 1/16-finals | Radivojevic L. | Kostovic T. | CAN. | detalhes | 13.10.2026 | ||
| 1/16-finals | Kostovic T. | Noha Akugue N. | CAN. | detalhes | 06.10.2026 | ||
| Quarter-finals | Ruzic A. | Kostovic T. | 2:1 (4:6, 6:4, 6:2) | detalhes | 02.10.2026 | ||
| 1/8-finals | Kostovic T. | Galfi D. | 2:1 (4:6, 7:61, 6:4) | detalhes | 30.09.2026 | ||
| 1/16-finals | Kostovic T. | Cengiz B. | 1:0 RET. (6:1, 0:0) | detalhes | 29.09.2026 | ||
| Final | Cengiz B. | Kostovic T. | 2:1 (2:6, 6:4, 7:5) | detalhes | 27.09.2026 | ||
| Semi-finals | Kostovic T. | Iatcenko P. | 2:0 (7:5, 7:5) | detalhes | 26.09.2026 | ||
| Quarter-finals | Kostovic T. | Tian F. | 2:0 (6:0, 7:5) | detalhes | 25.09.2026 | ||
| 1/8-finals | Kostovic T. | Bertea E. R. | 2:0 (6:3, 6:1) | detalhes | 24.09.2026 | ||
| 1/16-finals | Kostovic T. | Ansari C. | 2:0 (6:3, 6:1) | detalhes | 22.09.2026 | ||
| Quarter-finals | Kostovic T. | Quevedo K. | 0:2 (3:6, 4:6) | detalhes | 18.09.2026 | ||
| 1/8-finals | Semenistaja D. | Kostovic T. | 0:2 (4:6, 1:6) | detalhes | 16.09.2026 | ||
| 1/16-finals | Kostovic T. | Barros V. L. | 2:0 (6:2, 6:4) | detalhes | 15.09.2026 | ||
| Quarter-finals | Rus A. | Kostovic T. | 2:1 (4:6, 6:4, 6:4) | detalhes | 25.08.2026 | ||
| 1/16-finals | Kostovic T. | Kubka M. | 1:2 (63:7, 6:2, 1:6) | detalhes | 03.08.2026 | ||
| Final | Wolff V. | Kostovic T. | 0:2 (4:6, 0:6) | detalhes | 26.07.2026 | ||
| Semi-finals | Siskova A. | Kostovic T. | 0:2 (3:6, 65:7) | detalhes | 25.07.2026 | ||
| Quarter-finals | Pastikova J. | Kostovic T. | 0:2 (2:6, 4:6) | detalhes | 24.07.2026 | ||
| 1/8-finals | Supova K. | Kostovic T. | 0:2 (4:6, 4:6) | detalhes | 23.07.2026 | ||
| 1/16-finals | Koller A. | Kostovic T. | 0:2 (4:6, 0:6) | detalhes | 21.07.2026 | ||
| 1/8-finals | Kostovic T. | Bronzetti L. | 0:2 (4:6, 4:6) | detalhes | 16.07.2026 | ||
| 1/16-finals | Kostovic T. | Ruggeri J. | 2:0 (6:2, 6:3) | detalhes | 14.07.2026 | ||
| Semi-finals | Gorgodze E. | Kostovic T. | 2:0 (7:64, 6:1) | detalhes | 11.07.2026 | ||
| Quarter-finals | Kostovic T. | Zidansek T. | 2:0 (6:3, 6:0) | detalhes | 10.07.2026 | ||
| 1/8-finals | Kostovic T. | Niemeier J. | 2:1 (4:6, 7:5, 6:2) | detalhes | 09.07.2026 | ||
| 1/16-finals | Kostovic T. | Brockmann T. J. | 2:0 (6:0, 6:4) | detalhes | 08.07.2026 | ||
| 1/64-finals | Sabalenka A. | Kostovic T. | 2:0 (6:2, 6:3) | detalhes | 29.06.2026 | ||
| Final | Kostovic T. | Zhu L. | 2:0 (6:3, 6:4) | detalhes | 25.06.2026 | ||
| Semi-finals | Sramkova R. | Kostovic T. | 1:2 (6:4, 64:7, 4:6) | detalhes | 24.06.2026 | ||
| Quarter-finals | Ku Y. | Kostovic T. | 0:2 (1:6, 4:6) | detalhes | 23.06.2026 | ||
| 1/16-finals | Oz I. | Kostovic T. | 2:1 (7:5, 4:6, 6:3) | detalhes | 09.06.2026 | ||
| 1/16-finals | Waltert S. | Kostovic T. | 2:0 (6:0, 6:3) | detalhes | 02.06.2026 | ||
| Quarter-finals | Kostovic T. | Samson L. | 0:2 (0:6, 4:6) | detalhes | 29.05.2026 | ||
| 1/8-finals | Kostovic T. | Struplova J. | 2:0 (6:2, 6:1) | detalhes | 28.05.2026 | ||
| 1/16-finals | Kostovic T. | Kotliar Y. | 2:0 (7:64, 6:2) | detalhes | 27.05.2026 | ||
| Semi-finals | Kostovic T. | Quevedo K. | 1:2 (63:7, 6:3, 2:6) | detalhes | 20.05.2026 | ||
| 1/8-finals | Burrage J./Montgomery R. | Kostovic T./Vandromme J. | CAN. | detalhes | 04.11.2026 | ||
| Semi-finals | Kostovic T./Micic E. | Falkowska W./Smith A. | 1:2 (7:5, 4:6, 8:10) | detalhes | 25.09.2026 | ||
| Quarter-finals | Pridankina E./Tikhonova A. | Kostovic T./Micic E. | 0:2 (61:7, 4:6) | detalhes | 24.09.2026 | ||
| 1/8-finals | Kostovic T./Micic E. | Falei A./Iatcenko P. | WO. | detalhes | 24.09.2026 | ||
| Quarter-finals | Milovanovic E./Novak K. | Kostovic T./Riera J. | 2:0 (6:4, 7:66) | detalhes | 09.07.2026 | ||
| 1/8-finals | Kostovic T./Riera J. | Boehner L./Pohle V. | 2:1 (6:2, 3:6, 10:5) | detalhes | 07.07.2026 | ||
| Quarter-finals | Herea C. A./Kostovic T. | Dang Y./You X. | 0:2 (5:7, 5:7) | detalhes | 28.05.2026 | ||
| 1/8-finals | Herea C. A./Kostovic T. | Plosnik E./Vaja K. | WO. | detalhes | 26.05.2026 | ||