William Thulin
2025
| J60 ARNHEM | [4] | Semi | 
| J60 RHODES | [2] | 2R | 
| J100 LIEPAJA | [6] | Semi | 
| J100 KRAKOW | 2R | |
| J30 HANKO | [1] | Win | 
| J60 LARNACA-2 | [6] | Semi | 
| J60 TARRAGONA | [7] | 2R | 
| J30 WATERFORD | [1] | 2R | 
| J30 DUBLIN-2 | [2] | Win | 
| J60 TELDE | [6] | 1R | 
| J100 LOUGHBOROUGH | 1R | |
| J30 LIVERPOOL-2 | [3] | 2R | 
| J60 OFFENBACH | 1R | 
2024
| J60 EMMELOORD | [6] | Quarter | 
| J30 AIZKRAUKLE | [4] | Win | 
| J60 DIJON | 2R | |
| J100 CLERMONT-FERRAND | 1R | |
| J60 SCHIFFLANGE | 1R | |
| J60 NAAS | [7] | 2R | 
| J30 EDINBURGH | [6] | Final | 
| J60 EDINBURGH | 2R | |
| J30 LIMASSOL | 2R | |
| J30 DUBLIN-2 | 1R | |
| J30 TALLINN | 2R | |
| J30 TARTU | Quarter | |
| J30 DUBLIN | 1R | |
| J30 MARIBOR | 1R | 
2023
Nation
DEN
Generation
Born in 2009 (15-16 years old)
World Ranking
Junior World Ranking 624th
Year-end Junior World Ranking
- Year-end 2024 959th
- Year-end 2023 2235th
Match Details
2025 J60 ARNHEM
| W | 2R | Finn Klemen | 6-2 6-2 | 
| W | 3R | Maxim Lunak | 6-4 6-0 | 
| W | QF | Max Geissinger | 6-3 6-3 | 
| L | SF | Kristian Vukovic | 3-6 6-2 4-6 | 
2025 J60 RHODES
| W | 1R | Apostolos Tzimkas | 6-4 6-4 | 
| L | 2R | Parv Patel | 7-5 2-3 15-40 | 
2025 J100 LIEPAJA
| W | 1R | Gustavs Gutans | 6-2 6-0 | 
| W | 2R | Mark Griaziutin Tverskoj | 6-3 4-6 6-2 | 
| W | QF | Nikita Smirnov | 6-2 6-4 | 
| L | SF | Oliver Majdandzic | 2-6 5-7 | 
2025 J100 KRAKOW
| W | 1R | Marcin Voigt | 6-3 6-3 | 
| L | 2R | Jan Sadzik | 3-6 4-6 | 
2025 J30 HANKO
| W | 1R | William Silvstedt Warholm | 6-2 3-6 6-2 | 
| W | 2R | Benjamin Herbert Kamps | 7-5 6-2 | 
| W | QF | Aarne Koskinen | 6-2 6-1 | 
| W | SF | Verneri Riikonen | 6-1 6-7 6-0 | 
| W | F | William Repakis | 6-4 6-0 | 
2025 J60 LARNACA-2
| W | 1R | Marios Prastitis | 6-1 6-1 | 
| W | 2R | Joshua Oliver Zapp | 6-4 6-2 | 
| W | QF | Konstantinos Megalemos | 7-6 6-3 | 
| L | SF | Alexey Frolov | 4-6 1-6 | 
2025 J60 TARRAGONA
| W | 1R | Izan Bofarull | 6-0 6-3 | 
| L | 2R | Alejandro Hernandez Ramada | 7-5 6-7 1-6 | 
2025 J30 WATERFORD
| W | 1R | Hugh Murphy | 6-2 6-2 | 
| L | 2R | Andrew Cutocheras | 3-2 | 
2025 J30 DUBLIN-2
| W | 1R | Jack Seaborn | 6-2 6-4 | 
| W | 2R | Oliver Hradilek | 6-7 6-1 6-2 | 
| W | QF | Matej Sedlaty | 7-5 6-4 | 
| W | SF | Dylan Kazlauskas | 6-2 6-1 | 
| W | F | Jan Froehlich | 6-2 6-1 | 
2025 J60 TELDE
| L | 1R | Matias Reyniak | 2-6 2-6 | 
2025 J100 LOUGHBOROUGH
| L | 1R | Liam Channon | 3-6 2-6 | 
2025 J30 LIVERPOOL-2
| W | 1R | Kouros Anssarizadeh | 6-4 7-6 | 
| L | 2R | Mathias Lescano-Vecchi | 0-1 | 
2025 J60 OFFENBACH
| L | 1R | Tim Hohmann | 2-6 2-6 | 
2024 J60 EMMELOORD
| W | 1R | Oscar Reilly | 3-6 5-4 | 
| W | 2R | Thom Koppelle | 7-5 6-3 | 
| L | QF | Aaron Gabet | 5-7 0-6 | 
2024 J30 AIZKRAUKLE
| W | 1R | Kirils Sokolovs | 6-0 6-2 | 
| W | 2R | Robin Lucas Sirk | 6-4 7-5 | 
| W | QF | Augustas Geciauskas | 6-4 3-6 6-3 | 
| W | SF | Armands Aire | 6-4 6-2 | 
| W | F | Danila Folkheims | 4-6 7-6 6-3 | 
2024 J60 DIJON
| W | 1R | Louis Collos | 6-2 6-3 | 
| L | 2R | Matthew Upton | 0-6 1-6 | 
2024 J100 CLERMONT-FERRAND
| L | 1R | Isaac Lhomond | 1-6 0-6 | 
2024 J60 SCHIFFLANGE
| L | 1R | Roberto Perez Socas | 3-6 4-6 | 
2024 J60 NAAS
| W | 1R | Hugh Murphy | 6-0 6-1 | 
| L | 2R | William Moxon | 4-6 3-6 | 
2024 J30 EDINBURGH
| W | 1R | Matthew Ground | 7-6 6-1 | 
| W | 2R | Jack Berry | 7-6 6-0 | 
| W | QF | Leo Wright | 7-6 2-6 6-0 | 
| W | SF | Alexander English | 6-1 6-4 | 
| L | F | Arthur Attrill | 1-6 1-6 | 
2024 J60 EDINBURGH
| W | 1R | Thomas Dixon | 6-7 6-1 6-2 | 
| L | 2R | Louis Hull | 3-6 4-6 | 
2024 J30 LIMASSOL
| W | 1R | Jan Nowacki | 6-3 6-2 | 
| L | 2R | Max Geissinger | 1-6 3-6 | 
2024 J30 DUBLIN-2
| L | 1R | Goncalo Quintela | 6-3 2-6 1-6 | 
2024 J30 TALLINN
| W | 1R | Aleksandrs Sotikovs | 3-6 6-2 6-4 | 
| L | 2R | Sten Hiiesalu | 6-1 0-6 0-6 | 
2024 J30 TARTU
| W | 1R | Indrek Herman Raudkivi | 6-2 7-5 | 
| W | 2R | Niklas Korsstrom | 7-6 6-2 | 
| L | QF | Sten Hiiesalu | 2-6 1-6 | 
2024 J30 DUBLIN
| L | 1R | Sean O Nuallain | 2-6 2-6 | 
2024 J30 MARIBOR
| L | 1R | Jure Siftar | 4-6 6-7 | 
2023 J30 TALLINN
| W | 1R | Robert Raag | 6-4 6-3 | 
| L | 2R | Michael Savano | 1-6 3-6 | 
2023 J30 PARALIMNI
| L | 1R | Filippo Alfano | 7-5 1-6 0-1 | 
2023 J60 TIRANA-2
| W | 1R | Lorenzo De Vizia | 2-6 6-2 6-3 | 
| L | 2R | Patrik Munkhammar | 1-6 1-6 | 
2023 J60 HANNOVER
| L | 1R | Bengt Johan Reinhard | 2-6 2-6 | 
2023 J100 MOENCHENGLADBACH
| L | 1R | Tim Kohl | 4-6 0-3 | 
2023 J60 SCHIFFLANGE
| W | 1R | Patrik Hinz | 6-4 6-3 | 
| L | 2R | Patrick Marsh | 6-7 1-6 | 
Junior Tennis Database is a site that summarizes the results of ITF junior tennis tournaments.
Number of registered tournaments: 9942, Number of registered players: 6,164, Number of registered results: 343,780