Jan Kobierski
2022
| J2 CAIRO | [3] | Quarter |
| J1 BYTOM | [9] | 2R |
| J2 BRUCHKOEBEL | [7] | 3R |
| J2 GLADBECK | Quarter | |
| J1 BAMBERG | 1R | |
| JAOFFENBACH | 2R | |
| J1 BEAULIEU-SUR-MER | 2R | |
| J2 ISTRES | [8] | 1R |
| J2 CAPDAIL | [5] | Semi |
| J1 VRSAR | 1R | |
| J1 VILLENA | 2R | |
| J1 CASABLANCA | 1R | |
| J2 VALENCIA | [7] | Quarter |
| J2 SIAULIAI | 2R | |
| AUSTRALIAN OPEN JUNIOR | 1R | |
| J1 TRARALGON | 1R |
2021
| J2 KIRYATSHMONA | [5] | 1R |
| J2 SOUSSE-2 | 1R | |
| J2 SZEKESFEHERVAR | [7] | 1R |
| J2 ISTANBUL | [9] | Quarter |
| J3 MARIALANZENDORF | [1] | 2R |
| J2 SHYMKENT | [3] | Semi |
| J3 MOSTAR | [2] | Semi |
| J2 CAIRO-2 | 1R | |
| J3 LIEPAJA | [2] | Final |
| J3 BARCELONA | [5] | Semi |
| J3 WELS | [6] | Final |
| J4 WELS | [1] | 1R |
| J4 VESKA | [5] | 1R |
| J3 IRPIN | 2R | |
| J3 SVYATOPETRIVSKEVILLAGE | Quarter | |
| J2 OBERPULLENDORF | 1R | |
| J3 RAMATHASHARON | [8] | 2R |
| J4 LARNACA | [1] | Quarter |
| J4 CAIRO-2 | 2R | |
| J5 CAIRO | [4] | Win |
| J4 ANTALYA | 1R | |
| J5 GIZA | [4] | Final |
| J4 RAMATHASHARON | [4] | Quarter |
| J4 FRANKFURT | 2R |
2020
| J4 ANTALYA-5 | 1R | |
| J4 MUGLA | [5] | Quarter |
| J5 BUDAPEST-3 | [1] | Semi |
| J3 ISTANBUL-6 | 2R | |
| J4 MARIBOR-4 | Quarter | |
| J4 DOMZALE-3 | [7] | 1R |
| J4 KRANJ-3 | [8] | Semi |
| J4 LARNACA-3 | Semi | |
| J4 LANARCA-3 | 2R | |
| J3 KARNTEN | 2R | |
| J5 ANTALYA-2 | [15] | 3R |
| J4 CAIRO-6 | [10] | 2R |
| J4 OBERPULLENDORF | Semi |
Nation
AUT
Year-end Junior World Ranking
- Year-end 2022 163th
- Year-end 2021 136th
- Year-end 2020 484th
- Year-end 2019 1991th
Rival
Massimo Giunta (2-1)
Alejandro Bancalari (1-1)
Venedikt Tsirikidze (2-0)
Pedro Rodenas (0-2)
Jaden Weekes (1-1)
Match Details
2022 J2 CAIRO
| W | 1R | Venedikt Tsirikidze | 2-6 7-5 7-5 |
| W | 2R | Daniel Khazime | 4-6 7-6 6-4 |
| L | QF | Ahmed Zaki | 4-6 2-6 |
2022 J1 BYTOM
| L | 2R | Sergio Callejon Hernando | 4-6 3-6 |
2022 J2 BRUCHKOEBEL
| W | 2R | Max Schoenhaus | 6-3 3-6 6-4 |
| L | 3R | Iliyan Radulov | 1-6 2-6 |
2022 J2 GLADBECK
| W | 1R | Valentin Basel | 2-6 6-3 6-3 |
| W | 2R | Alejandro Bancalari | 6-1 6-7 6-1 |
| L | QF | Gianluca Ballotta | 6-7 2-6 |
2022 J1 BAMBERG
| L | 1R | Daniel Verbeek | 1-6 1-6 |
2022 JAOFFENBACH
| W | 1R | Yannik Kelm | 6-2 6-2 |
| L | 2R | Gabriel Debru | 3-6 3-6 |
2022 J1 BEAULIEU-SUR-MER
| W | 1R | Jaden Weekes | 6-1 7-6 |
| L | 2R | Lennon Roark Jones | 4-6 4-6 |
2022 J2 ISTRES
| L | 1R | Thomas Faurel | 6-7 3-6 |
2022 J2 CAPDAIL
| W | 1R | Lucio Ratti | 6-2 7-6 |
| W | 2R | Igor Mandou Berranger | 6-1 6-0 |
| W | QF | Massimo Giunta | 6-4 6-1 |
| L | SF | Rei Sakamoto | 3-6 5-7 |
2022 J1 VRSAR
| L | 1R | Federico Bondioli | 4-6 1-6 |
2022 J1 VILLENA
| W | 1R | Joan Torres Espinosa | 4-0 5-44 |
| L | 2R | Jeremy Jin | 1-4 0-4 |
2022 J1 CASABLANCA
| L | 1R | Andrea Mchich | 6-1 0-6 4-6 |
2022 J2 VALENCIA
| W | 1R | Maximilian Wuelfing | 6-7 6-2 6-2 |
| W | 2R | Rafael Segado Esteve | 6-3 6-2 |
| L | QF | Pedro Rodenas | 1-6 4-6 |
2022 J2 SIAULIAI
| W | 1R | Pijus Reklevicius | 6-4 7-6 |
| L | 2R | Jakub Nicod | 3-6 0-6 |
2022 AUSTRALIAN OPEN JUNIOR
| L | 1R | Jakub Mensik | 2-6 4-6 |
2022 J1 TRARALGON
| L | 1R | Edas Butvilas | 0-6 0-6 |
2021 J2 KIRYATSHMONA
| L | 1R | Maciej Kos | 4-6 3-6 |
2021 J2 SOUSSE-2
| L | 1R | Woobin Shin | 4-6 2-6 |
2021 J2 SZEKESFEHERVAR
| L | 1R | Giammarco Gandolfi | 5-7 6-4 3-6 |
2021 J2 ISTANBUL
| W | 2R | Batu Ataseven | 6-0 6-3 |
| W | 3R | Eskander Guryev | 6-3 6-4 |
| L | QF | Martyn Pawelski | 2-6 4-6 |
2021 J3 MARIALANZENDORF
| L | 2R | Daniel Zimmermann | 6-4 1-6 5-7 |
2021 J2 SHYMKENT
| W | 1R | Rustam Sarmanov | 6-2 6-1 |
| W | 2R | Daniil Felker | 6-4 7-6 |
| W | QF | Venedikt Tsirikidze | 6-2 7-6 |
| L | SF | Maxim Shin | 6-1 0-6 1-6 |
2021 J3 MOSTAR
| W | 1R | Lun Obrul | 6-2 2-6 6-2 |
| W | 2R | Josip Simundza | 6-0 6-1 |
| W | QF | Danil Panarin | 6-1 6-4 |
| L | SF | Matej Dodig | 6-7 4-6 |
2021 J2 CAIRO-2
| L | 1R | Walid Ahouda | 3-6 1-6 |
2021 J3 LIEPAJA
| W | 1R | Matthew Johnstone | 6-2 6-1 |
| W | 2R | Nikolajs Galkins | 6-1 6-2 |
| W | QF | Oliver Ojakaar | 3-6 6-4 6-4 |
| W | SF | Marten Murrand | 6-4 6-1 |
| L | F | Freddy Murray | 3-6 2-6 |
2021 J3 BARCELONA
| W | 1R | Alexander Watanabe Eriksson | 5-7 7-5 6-4 |
| W | 2R | Dominique Rolland | 6-3 1-0 |
| W | QF | Hamza El Amine | 6-2 6-0 |
| L | SF | Alejandro Bancalari | 6-3 2-6 1-6 |
2021 J3 WELS
| W | 1R | Enes Irgare | 6-2 6-3 |
| W | 2R | Syl Gaxherri | 6-4 6-0 |
| W | QF | Massimo Giunta | 6-3 1-0 |
| W | SF | Joel Schwaerzler | 6-2 7-6 |
| L | F | Branko Djuric | 2-6 1-6 |
2021 J4 WELS
| L | 1R | Massimo Giunta | 7-6 6-7 4-6 |
2021 J4 VESKA
| L | 1R | Filip Kana | 3-6 6-3 4-6 |
2021 J3 IRPIN
| W | 1R | Danylo Maslennikov | 6-1 6-0 |
| L | 2R | Eskander Guryev | 3-6 0-6 |
2021 J3 SVYATOPETRIVSKEVILLAGE
| W | 1R | Vitaly Belanov | 4-6 6-2 6-0 |
| W | 2R | Andrii Zimnokh | 6-3 7-5 |
| L | QF | Artem Podorozhnyi | 2-6 7-5 0-6 |
2021 J2 OBERPULLENDORF
| L | 1R | Mehdi Sadaoui | 4-6 6-7 |
2021 J3 RAMATHASHARON
| W | 1R | Ori Baron | 5-7 6-4 6-2 |
| L | 2R | Jaden Weekes | 1-6 4-6 |
2021 J4 LARNACA
| W | 1R | Stavros Hadjivarnava | 6-0 6-3 |
| W | 2R | Andrea Meduri | 7-6 7-5 |
| L | QF | Stylianos Christodoulou | 7-6 2-6 2-6 |
2021 J4 CAIRO-2
| W | 1R | Till Brunner | 7-5 6-1 |
| L | 2R | Karim Ibrahim | 6-7 0-6 |
2021 J5 CAIRO
| W | 1R | Joshua Nuyts | 6-1 6-3 |
| W | 2R | Aleksa Pisaric | 6-2 6-4 |
| W | QF | He Ziheng | 6-1 7-5 |
| W | SF | Hady El Kordy | 7-5 4-6 7-6 |
| W | F | Ye Hongyu | 6-1 6-1 |
2021 J4 ANTALYA
| L | 1R | Pedro Rodenas | 3-6 4-6 |
2021 J5 GIZA
| W | 1R | Grigory Shebekin | 6-3 6-3 |
| W | 2R | Zyad Hamed | 6-2 7-6 |
| W | QF | He Ziheng | 6-0 6-3 |
| W | SF | Georgios Nouchakis | 6-3 6-3 |
| L | F | Borys Zgola | 7-6 3-6 0-6 |
2021 J4 RAMATHASHARON
| W | 1R | Oryan Zohar | 6-1 6-4 |
| W | 2R | Itay Feigin | 6-3 3-6 6-0 |
| L | QF | Shay Bar Menahem | 4-6 2-6 |
2021 J4 FRANKFURT
| W | 1R | Oliver Olsson | 6-3 6-3 |
| L | 2R | Neo Niedner | 0-6 2-6 |
2020 J4 ANTALYA-5
| L | 1R | Patrick Brady | 2-6 2-6 |
2020 J4 MUGLA
| W | 1R | Mert Arabaci | 6-0 6-4 |
| W | 2R | Erik Kovacs | 6-2 6-3 |
| L | QF | Lorenzo Esquici | 3-6 1-6 |
2020 J5 BUDAPEST-3
| W | 1R | Pavel Kelo | 6-2 6-4 |
| W | 2R | Aleksa Pisaric | 2-6 6-1 6-3 |
| W | QF | Georgios Nouchakis | 6-4 6-2 |
| L | SF | Ivan Noel Hornung | 4-6 6-7 |
2020 J3 ISTANBUL-6
| W | 1R | Alexander Watanabe Eriksson | 6-2 6-2 |
| L | 2R | Ozan Baris | 3-6 2-6 |
2020 J4 MARIBOR-4
| W | 1R | Miha Vetrih | 4-0 |
| W | 2R | James Van Herzeele | 6-2 6-0 |
| L | QF | Peter Nad | 0-6 1-6 |
2020 J4 DOMZALE-3
| L | 1R | Tilen Kovac | 5-7 4-6 |
2020 J4 KRANJ-3
| W | 1R | Tilen Kovac | 7-5 6-1 |
| W | 2R | Nik Mikovic | 6-3 6-3 |
| W | QF | Miha Vetrih | 5-7 6-4 6-4 |
| L | SF | Gal Emersic Potocnik | 0-6 1-6 |
2020 J4 LARNACA-3
| W | 1R | Andreas Philippou | 6-0 6-0 |
| W | 2R | Maximilian Homberg | 2-6 6-3 6-4 |
| W | QF | William Jansen | 6-4 6-3 |
| L | SF | Paul Inchauspe | 7-5 1-6 1-6 |
2020 J4 LANARCA-3
| W | 1R | Stavros Hadjivarnava | 6-0 6-0 |
| L | 2R | Maximilian Homberg | 4-6 1-6 |
2020 J3 KARNTEN
| W | 1R | Aljaz Jeran | 2-6 6-4 7-6 |
| L | 2R | Max Hans Rehberg | 1-6 0-6 |
2020 J5 ANTALYA-2
| W | 1R | Slobodan Cejovic | 6-4 6-0 |
| W | 2R | Idriss Haddouch | 6-4 7-5 |
| L | 3R | Arda Azkara | 5-7 3-6 |
2020 J4 CAIRO-6
| W | 1R | Negad Ezzat | 6-1 6-1 |
| L | 2R | Danyil Shcheblykin | 4-6 6-4 5-7 |
2020 J4 OBERPULLENDORF
| W | 1R | Trisztan Gubi | 6-2 6-1 |
| W | 2R | Filip Pieczonka | 6-2 |
| W | 3R | Jan Hrazdil | 6-2 7-6 |
| W | QF | Kalin Ivanovski | 6-2 3-1 |
| L | SF | Blaz Vidovic | 1-6 6-7 |
Junior Tennis Database is a site that summarizes the results of ITF junior tennis tournaments.
Number of registered tournaments: 10142, Number of registered players: 6,424, Number of registered results: 373,832