Niels Ratiu
2023
| J300 CHARLEROI-MARCINELLE | Quarter | |
| J200 STPOELTEN | Win | |
| J200 VILLACH | 2R | |
| J200 ISTRES | 2R | |
| J500 CRICIUMA | 2R | |
| J300 PORTOALEGRE | 1R | |
| J300 ASUNCION | 1R | |
| J100 GLASGOW | [1] | Semi |
2022
| JAMERIDA | 1R | |
| J1 GUADALAJARA | 2R | |
| J2 SHYMKENT | [11] | Quarter |
| J2 ISTANBUL | 1R | |
| J1 PRAGUE | 3R | |
| J1 BYTOM | 2R | |
| J3 POZNAN | 2R | |
| J3 NEUNKIRCHEN | [13] | 2R |
| J1 CHARLEROI-MARCINELLE | 1R | |
| J2 VILLACH | 2R | |
| J5 HASSELT | [4] | Semi |
| J3 MOHAMMEDIA | Quarter | |
| J5 DAKAR-2 | [5] | Quarter |
| J5 DAKAR | [4] | Semi |
| J2 HAMMAMSOUSSE | 1R | |
| J2 HAMMAMET | 1R | |
| J4 ARLON | 2R |
2021
Nation
BEL
World Ranking
ATP Ranking　1230th
Year-end Junior World Ranking
- Year-end 2023 160th
- Year-end 2022 226th
- Year-end 2021 1077th
Match Details
2023 J300 CHARLEROI-MARCINELLE
| W | 1R | Karim Bennani | 3-6 7-6 6-1 |
| W | 2R | Yuvan Nandal | 6-1 5-2 |
| W | 3R | Stiles Brockett | 6-4 5-7 6-3 |
| L | QF | Lasse Poertner | 5-7 3-6 |
2023 J200 STPOELTEN
| W | 1R | Yannik Kelm | 6-3 6-4 |
| W | 2R | Patrik Meszaros | 6-4 6-3 |
| W | QF | Nico Hipfl | 6-4 4-6 7-5 |
| W | SF | Matteo Lavizzari | 6-4 6-2 |
| W | F | Vit Kalina | 6-2 6-1 |
2023 J200 VILLACH
| W | 1R | Nico Hipfl | 6-3 6-1 |
| L | 2R | Keegan Rice | 6-3 5-7 6-7 |
2023 J200 ISTRES
| W | 1R | Aaron Funk | 6-0 7-6 |
| L | 2R | Paul Barbier Gazeu | 4-6 6-7 |
2023 J500 CRICIUMA
| W | 1R | Mateus Yakasilo | 6-0 6-1 |
| L | 2R | Federico Cina | 6-2 1-6 4-6 |
2023 J300 PORTOALEGRE
| L | 1R | Adriano Dzhenev | 5-7 6-3 1-6 |
2023 J300 ASUNCION
| L | 1R | Maxwell Exsted | 3-6 5-7 |
2023 J100 GLASGOW
| W | 1R | Conor Brady | 6-1 6-3 |
| W | 2R | Alan Wazny | 6-3 6-3 |
| W | QF | Henry Jefferson | 7-6 7-6 |
| L | SF | Charlie Robertson | 6-7 2-6 |
2022 JAMERIDA
| L | 1R | Rodrigo Pacheco Mendez | 2-6 2-6 |
2022 J1 GUADALAJARA
| W | 1R | Jose Maria Garcia Uribe | 6-0 6-1 |
| L | 2R | Patrick Schoen | 7-6 3-6 3-6 |
2022 J2 SHYMKENT
| W | 2R | Amirkhamza Nasridinov | 6-2 6-4 |
| W | 3R | Islam Orynbasar | 7-5 7-6 |
| L | QF | Filip Apltauer | 6-2 1-6 3-6 |
2022 J2 ISTANBUL
| L | 1R | Vuk Radjenovic | 6-4 5-7 1-6 |
2022 J1 PRAGUE
| W | 1R | Krystof Svojgr | 6-2 6-3 |
| W | 2R | Filip Apltauer | 6-3 6-4 |
| L | 3R | Samuel Kyjaci | 7-6 4-6 4-6 |
2022 J1 BYTOM
| W | 1R | Luka Novakovic | 6-4 6-2 |
| L | 2R | Maciej Kos | 3-6 4-6 |
2022 J3 POZNAN
| W | 1R | Nikodem Barcik | 6-7 7-5 6-4 |
| L | 2R | Fadi Bidan | 6-7 6-3 6-7 |
2022 J3 NEUNKIRCHEN
| L | 2R | Max Schoenhaus | 0-6 6-4 3-6 |
2022 J1 CHARLEROI-MARCINELLE
| L | 1R | Peter Buldorini | 3-6 6-4 2-6 |
2022 J2 VILLACH
| W | 1R | Joel Schwaerzler | 6-7 6-3 6-3 |
| L | 2R | Mihai Alexandru Coman | 2-6 6-4 3-6 |
2022 J5 HASSELT
| W | 2R | Lukas Gruben | 7-5 3-6 6-4 |
| W | 3R | Nicolas Trebuchet | 4-6 6-4 6-2 |
| W | QF | Ethan Khun | 6-2 6-2 |
| L | SF | Felipe Virgili Berini | 2-6 1-6 |
2022 J3 MOHAMMEDIA
| W | 1R | Matteo Covato | 5-7 6-0 7-6 |
| W | 2R | Loan Lestir | 2-6 6-2 6-4 |
| L | QF | Vit Kalina | 3-6 7-5 4-6 |
2022 J5 DAKAR-2
| W | 1R | Zoheir Fardoun | 6-1 6-2 |
| W | 2R | Zakaria Achour | 6-2 6-2 |
| L | QF | Jelani Sarr | 3-6 5-7 |
2022 J5 DAKAR
| W | 1R | Nathan Trouve | 6-0 6-7 6-2 |
| W | 2R | Ahmed Elkarmoty | 6-2 6-1 |
| W | QF | Timeo Gaillard | 6-0 6-1 |
| L | SF | Thomas Faurel | 3-6 3-6 |
2022 J2 HAMMAMSOUSSE
| L | 1R | Anro Nel | 4-6 7-5 3-6 |
2022 J2 HAMMAMET
| L | 1R | Tiago Silva | 3-6 5-7 |
2022 J4 ARLON
| W | 1R | Julien Imbert | 6-2 6-2 |
| L | 2R | Gianluca Cadenasso | 6-2 3-6 6-7 |
2021 J4 HEIVELD
| W | 1R | Mees Rottgering | 6-2 6-2 |
| W | 2R | Philipp Bosse | 6-4 7-5 |
| L | 3R | Natan Dhulst | 1-6 4-6 |
2021 J5 THEHAGUE-2
| L | 1R | Markus Molder | 6-7 6-4 1-6 |
2021 J5 VALEDOLOBO
| W | 1R | Duarte Brito | 7-6 6-3 |
| W | 2R | Flavio Abbate | 3-6 6-3 6-4 |
| L | 3R | Adrien Berrut | 0-6 5-7 |
2021 J5 PORTIMAO
| W | 1R | Luis Miguel Saraiva | 6-1 6-1 |
| W | 2R | Duarte Correia | 6-3 6-1 |
| W | 3R | Adrien Berrut | 3-6 7-6 6-4 |
| W | QF | Lukas Rais | 6-4 4-6 6-4 |
| W | SF | George Russell | 6-4 6-3 |
| L | F | Florent Limani | 4-6 1-6 |
2021 J5 HEIVELD-2
| W | 1R | Gur Trakhtenberg | 7-5 6-1 |
| L | 2R | Harold Van Raemdonck | 3-6 6-4 2-6 |
2021 J4 MAASEIK
| L | 1R | Gur Trakhtenberg | 6-4 5-7 3-6 |
2021 J5 BREE
| L | 1R | Sergej Topic | 6-0 3-6 3-6 |
Junior Tennis Database is a site that summarizes the results of ITF junior tennis tournaments.
Number of registered tournaments: 10086, Number of registered players: 6,349, Number of registered results: 362,939