Barbara Kostecka
2025
| J100Hanko | [7] | Semi |
| J100Loughborough-2 | [7] | 2R |
| J60Szczecin | [1] | Semi |
| J60Oberpullendorf | [4] | Win |
2024
| J100Aizkraukle-3 | 1R | |
| J60Mogyorod | [2] | 1R |
| J100Stavanger | [8] | 3R |
| J100Krakow | 1R | |
| J300Bytom | 1R | |
| J60Tallinn | [5] | Final |
| J100Sobota | Quarter | |
| J100Rabat | Quarter | |
| J100Mohammedia | Quarter | |
| J100Limassol | 2R | |
| J60Larnaca | 3R | |
| J60Warsaw | 2R |
2023
Nation
POL
Generation
Born in 2009 (15-16 years old)
World Ranking
Junior World Ranking 316th
Year-end Junior World Ranking
- Year-end 2024 482th
- Year-end 2023 1121th
Match Details
2025 J100Hanko
| W | 1R | Ema Chladova | 7-6 7-5 |
| W | 2R | Jana Denisenko | 6-1 0-6 6-4 |
| W | QF | Isabella Wong | 6-3 6-4 |
| L | SF | Tereza Hermanova | 2-6 1-6 |
2025 J100Loughborough-2
| W | 1R | Leah Bush | 6-4 6-3 |
| L | 2R | Edie Griffiths | 7-5 4-6 4-6 |
2025 J60Szczecin
| W | 1R | Martyna Sikora | 1-6 6-1 6-1 |
| W | 2R | Liubou Murashka | 7-5 6-2 |
| W | QF | Kamilla Cernousova | 6-2 6-1 |
| L | SF | Gloria Levinsky | 3-6 6-2 3-5 |
2025 J60Oberpullendorf
| W | 1R | Sofia Barhacova | 6-4 6-1 |
| W | 2R | Lea Haider-Maurer | 6-2 6-1 |
| W | QF | Elisabeth Braathen | 6-3 7-5 |
| W | SF | Monika Jirouskova | 3-6 7-5 6-4 |
| W | F | Greta Nemcsek | 5-7 6-4 7-5 |
2024 J100Aizkraukle-3
| L | 1R | Pavla Sviglerova | 3-6 3-6 |
2024 J60Mogyorod
| L | 1R | Lujza Beviz | 3-6 2-6 |
2024 J100Stavanger
| W | 2R | Emma Brandt Schultz | 6-1 6-0 |
| L | 3R | Emilija Lebedevaite | 1-6 3-6 |
2024 J100Krakow
| L | 1R | Karolina Krajmer | 3-6 4-6 |
2024 J300Bytom
| L | 1R | Luna Vujovic | 2-6 1-6 |
2024 J60Tallinn
| W | 1R | Laura Ozola | 6-1 6-2 |
| W | 2R | Alexandra Lindqvist | 6-2 6-3 |
| W | QF | Anna Mihalka | 6-2 5-7 6-1 |
| W | SF | Marija Lauva | 6-3 6-3 |
| L | F | Sara Kastakova | 6-3 2-6 3-6 |
2024 J100Sobota
| W | 1R | Nikola Koprivova | 4-6 7-5 6-3 |
| W | 2R | Oliwia Klimas | 6-4 6-2 |
| L | QF | Melinda Biro | 2-6 6-7 |
2024 J100Rabat
| W | 1R | Rita Raiss | 6-1 6-2 |
| W | 2R | Nour El Ouazzani | 6-1 6-4 |
| L | QF | Mireia Sagrista Bermejo | 2-6 6-7 |
2024 J100Mohammedia
| W | 1R | Eva Marie Desvignes | 6-1 3-6 6-0 |
| W | 2R | Sophie Ray | 7-6 6-1 |
| L | QF | Alba Maria Coromina Boluda | 3-6 5-7 |
2024 J100Limassol
| W | 1R | Nina Andronicou | 6-4 6-0 |
| L | 2R | Artemis Aslanisvili | 1-6 1-6 |
2024 J60Larnaca
| W | 1R | Maria Kovacevic | 6-1 6-2 |
| W | 2R | Sara Maria Dragnea | 4-6 6-4 6-4 |
| L | 3R | Anastasia Efremova | 6-3 4-6 1-6 |
2024 J60Warsaw
| W | 1R | Aliaksandra Skapets | 7-5 4-6 6-3 |
| L | 2R | Yeva Galiievska | 3-6 2-6 |
2023 J30Kozerki
| W | 1R | Nikol Janickovicova | 6-1 6-2 |
| W | 2R | Oliwia Drozdz | 6-3 6-1 |
| W | QF | Floortje Chrisstoffels | 6-1 6-2 |
| W | SF | Karolina Golda | 7-6 6-0 |
| W | F | Kristyna Dulikova | 6-4 6-4 |
2023 J60Pszczyna
| W | 1R | Maryia Kolas | 7-5 7-5 |
| W | 2R | Sara Mlenska | 6-2 2-6 6-3 |
| W | QF | Sara Husar | 6-3 6-3 |
| L | SF | Sara Borkop | 4-6 7-6 4-6 |
2023 J30Bielsko-Biala
| L | 1R | Timea Gross | 4-6 6-2 1-6 |
2023 J100Krakow
| W | 1R | Safien Boulonois | 6-2 7-5 |
| L | 2R | Lea Nilsson | 2-6 2-6 |
2023 J30Michalowek
| L | 1R | Amelie Brozova | 3-6 4-6 |
Junior Tennis Database is a site that summarizes the results of ITF junior tennis tournaments.
Number of registered tournaments: 5778, Number of registered players: 4,878, Number of registered results: 222,189