Mariella Thamm
2025
| Roland Garros Junior | 2R | |
| J500Milan | [15] | 2R |
| J200Prato | [1] | Win |
| J200Salsomaggiore | [1] | Semi |
| J500Offenbach | [12] | 3R |
| J200Capdail | [3] | Win |
| J300Barranquilla | [5] | Semi |
| J300Sanjose | [4] | Win |
| J100Bromma | [1] | 2R |
2024
| J300Sanxenxo | Quarter | |
| J200Vigo | [5] | 1R |
| J200Novisad | [8] | Semi |
| J300Pancevo | 1R | |
| J200Rutesheim | [6] | 2R |
| J100Verbier | [1] | Win |
| J300Bamberg | 2R | |
| J500Offenbach | 3R | |
| J200Istres | Quarter | |
| J200Capdail | 1R | |
| J300Vrsar | Quarter | |
| J200Oberhaching | 1R | |
| J100Istanbul | [4] | Semi |
2023
| J60Heiveld | [1] | Semi |
| J60Luzern | [1] | Win |
| J60Dijon | [3] | Semi |
| J100Clermont-Ferrand | Final | |
| J100Moenchengladbach | [13] | Semi |
| J30Guessing | [5] | Semi |
| J60Ickern | Final | |
| J30Heiveld | Final |
Nation
GER
Generation
Born in 2009 (15-16 years old)
Year-end Junior World Ranking
- Year-end 2024 86th
- Year-end 2023 311th
- Year-end 2022 2291th
Rival
Victoria Luiza Barros (1-2)
Sakino Miyazawa (2-0)
Julieta Pareja (1-1)
Denisa Zoldakova (2-0)
Mia Pohankova (0-2)
Match Details
2025 Roland Garros Junior
| W | 1R | Linea Bajraliu | 6-4 6-4 |
| L | 2R | Mia Pohankova | 0-6 4-6 |
2025 J500Milan
| W | 1R | Petra Konjikusic | 6-3 6-3 |
| L | 2R | Mia Pohankova | 6-3 1-6 2-6 |
2025 J200Prato
| W | 1R | Kseniia Ruchkina | 6-0 6-2 |
| W | 2R | Isabella Johri | 6-1 6-0 |
| W | QF | Barbara Kostecka | 6-2 5-7 6-3 |
| W | SF | Denisa Zoldakova | 6-4 7-5 |
| W | F | Sakino Miyazawa | 6-2 6-3 |
2025 J200Salsomaggiore
| W | 1R | Lara Quaglia | 6-1 6-0 |
| W | 2R | Sakino Miyazawa | 6-2 6-2 |
| W | QF | Sveva Pieroni | 6-0 6-2 |
| L | SF | Xinle Geng | 4-6 7-6 5-7 |
2025 J500Offenbach
| W | 1R | Denisa Zoldakova | 6-4 7-5 |
| W | 2R | Nina Andronicou | 6-0 6-4 |
| L | 3R | Julie Pastikova | 5-7 3-6 |
2025 J200Capdail
| W | 1R | Ophelie Boullay | 6-4 6-4 |
| W | 2R | Sara Oliveriusova | 6-3 6-0 |
| W | QF | Daria Kuznetsova | 6-2 6-1 |
| W | SF | Victoria Luiza Barros | 6-3 6-4 |
| W | F | Cindy Langlais | 6-3 6-4 |
2025 J300Barranquilla
| W | 1R | Andrea Taylor | 6-3 6-2 |
| W | 2R | Kaia Giribalan | 6-4 3-6 6-2 |
| W | QF | Yleymi Lugiana Muelle Valdez | 6-4 6-3 |
| L | SF | Julieta Pareja | 3-6 3-6 |
2025 J300Sanjose
| W | 1R | Kaya Moe | 6-3 6-2 |
| W | 2R | Ishika Ashar | 6-3 7-5 |
| W | QF | Julieta Pareja | 6-4 2-6 6-1 |
| W | SF | Capucine Jauffret | 6-2 2-6 6-2 |
| W | F | Ava Rodriguez | 6-3 6-3 |
2025 J100Bromma
| W | 1R | Tiana Tian Deng | 7-6 6-3 |
| L | 2R | Nadia Affelt | 5-7 7-5 4-6 |
2024 J300Sanxenxo
| W | 1R | Elizara Yaneva | 7-6 6-3 |
| W | 2R | Erika Novakova | 6-0 6-2 |
| L | QF | Nellie Taraba Wallberg | 6-2 5-7 2-6 |
2024 J200Vigo
| L | 1R | Aleksandra Pozarenko | 6-7 3-6 |
2024 J200Novisad
| W | 1R | Melinda Biro | 6-4 6-1 |
| W | 2R | Luna Vujovic | 7-5 6-1 |
| W | QF | Arina Varaksina | 6-0 4-6 6-1 |
| L | SF | Rada Zolotareva | 3-6 0-6 |
2024 J300Pancevo
| L | 1R | Lorena Solar Donoso | 2-6 4-6 |
2024 J200Rutesheim
| W | 1R | Nela Jandova | 6-4 4-6 6-2 |
| L | 2R | Beatrise Zeltina | 0-6 3-6 |
2024 J100Verbier
| W | 1R | Stefaniya Pushkar | 6-3 6-4 |
| W | 2R | Ellen Hirschi | 6-2 6-2 |
| W | QF | Kseniia Ruchkina | 6-4 6-2 |
| W | SF | Margaret Sohns | 6-1 6-2 |
| W | F | Sarina Schnyder | 6-3 7-6 |
2024 J300Bamberg
| W | 1R | Luna Vujovic | 6-1 5-7 6-1 |
| L | 2R | Victoria Luiza Barros | 3-6 6-7 |
2024 J500Offenbach
| W | 1R | Lucie Urbanova | 6-3 2-0 |
| W | 2R | Yelyzaveta Kotliar | 6-4 7-5 |
| L | 3R | Neus Torner Sensano | 0-6 2-6 |
2024 J200Istres
| W | 1R | Ksenia Smirnova | 6-1 6-4 |
| W | 2R | Reina Goto | 6-0 2-6 6-4 |
| L | QF | Ophelie Boullay | 6-1 3-6 6-7 |
2024 J200Capdail
| L | 1R | Victoria Luiza Barros | 4-6 6-7 |
2024 J300Vrsar
| W | 1R | Aliesia Reva | 5-7 6-3 6-4 |
| W | 2R | Ema Mravcova | 6-2 4-6 6-2 |
| W | 3R | Veronika Sekerkova | 6-2 6-2 |
| L | QF | Elizara Yaneva | 1-6 1-6 |
2024 J200Oberhaching
| L | 1R | Vendula Valdmannova | 6-4 0-6 3-6 |
2024 J100Istanbul
| W | 1R | Sude Ulueren | 6-3 6-2 |
| W | 2R | Emma Bakyrdjan | 3-6 6-4 6-1 |
| W | 3R | Nisa Bulut | 6-2 7-5 |
| W | QF | Haniya Aman Minhas | 6-2 6-0 |
| L | SF | Deniz Dilek | 6-4 6-7 3-6 |
2023 J60Heiveld
| W | 1R | Romy De Baene | 6-4 6-2 |
| W | 2R | Maria Tkalenko | 6-2 6-1 |
| W | 3R | Chrystal Lopez | 6-2 6-4 |
| W | QF | Katarina Kujovic | 6-4 6-4 |
| L | SF | Arina Kostina | 6-7 7-5 6-7 |
2023 J60Luzern
| W | 2R | Agnese Gentili | 6-1 6-3 |
| W | 3R | Lina Strassle | 6-4 6-2 |
| W | QF | Aurora Zurmuehle | 6-2 6-1 |
| W | SF | Noelia Manta | 6-3 1-6 6-4 |
| W | F | Karolina Krajmer | 7-6 4-6 6-4 |
2023 J60Dijon
| W | 1R | Capucine Cedillo- Vayson De Pradenne | 6-1 6-3 |
| W | 2R | Vasilisa Borisova | 6-3 6-4 |
| W | QF | Serafima Bobrovnikova | 6-1 6-1 |
| L | SF | Milena Ciocan | 2-6 6-2 3-6 |
2023 J100Clermont-Ferrand
| W | 1R | Polina Humeniuk | 7-6 6-2 |
| W | 2R | Milena Ciocan | 6-2 6-4 |
| W | QF | Juliette Trunet | 6-2 6-2 |
| W | SF | Noelia Manta | 7-5 6-1 |
| L | F | Neus Torner Sensano | 2-6 4-6 |
2023 J100Moenchengladbach
| W | 2R | Romy Fohnen | 6-3 1-6 6-1 |
| W | 3R | Nadia Kulbiej | 6-4 6-4 |
| W | QF | Alexandra Zimmer | 5-7 6-4 6-2 |
| L | SF | Joy De Zeeuw | 1-6 7-5 2-6 |
2023 J30Guessing
| W | 1R | Isabel Markovic | 7-5 6-2 |
| W | 2R | Eszter Kis Czako | 3-6 6-3 6-4 |
| W | QF | Natalia Koppova | 7-5 6-4 |
| L | SF | Ema Mravcova | 5-7 6-3 2-6 |
2023 J60Ickern
| W | 1R | Leticia Solakov | 6-4 6-2 |
| W | 2R | Anna Vashchenko | 6-1 3-6 6-1 |
| W | 3R | Michelle Khomich | 6-2 6-1 |
| W | QF | Leticia Tarocco | 6-2 6-2 |
| W | SF | Kali Supova | 3-6 7-6 7-5 |
| L | F | Eva Bennemann | 5-7 2-6 |
2023 J30Heiveld
| W | 1R | Marilyn Van Brempt | 6-4 1-6 7-5 |
| W | 2R | Farah Heddar | 6-4 3-6 6-1 |
| W | 3R | Eline Bex | 6-3 6-2 |
| W | QF | Sonia Van San | 6-1 6-1 |
| W | SF | Benthe De Bresser | 6-2 7-5 |
| L | F | Lauren Seye | 3-6 1-6 |
Junior Tennis Database is a site that summarizes the results of ITF junior tennis tournaments.
Number of registered tournaments: 9482, Number of registered players: 4,990, Number of registered results: 217,154