Gauthier Onclin
2019
| Us Open Junior | [9] | 3R |
| Wimbledon Junior | [15] | 1R |
| Roland Garros Junior | 2R | |
| Australian Open Junior | [10] | 1R |
Nation
BEL
Age
24 years old (born in 2001)
World Ranking
ATP Ranking　229th
Year-end Junior World Ranking
- Year-end 2019 21th
- Year-end 2018 20th
Match Details
2019 Us Open Junior
| W | 1R | Taha Baadi | 6-1 6-7 7-5 |
| W | 2R | William Grant | 6-2 6-3 |
| L | 3R | Milan Welte | 3-6 4-6 |
2019 Wimbledon Junior
| L | 1R | Anton Matusevich | 3-6 6-4 4-6 |
2019 Roland Garros Junior
| W | 1R | Gustavo Heide | 6-1 6-3 |
| L | 2R | Lorenzo Musetti | 3-6 6-7 |
2019 Australian Open Junior
| L | 1R | Harry Wendelken | 5-7 7-6 6-7 |
Junior Tennis Database is a site that summarizes the results of ITF junior tennis tournaments.
Number of registered tournaments: 5774, Number of registered players: 3,011, Number of registered results: 222,093