Naoki Tajima
2018
| US OPEN JUNIOR | [8] | 1R |
| WIMBLEDON JUNIOR | [8] | 1R |
| ROLAND GARROS JUNIOR | 2R | |
| AUSTRALIAN OPEN JUNIOR | [15] | 1R |
2017
| J500OSAKA | [4] | Quarter |
| US OPEN JUNIOR | Quarter | |
| WIMBLEDON JUNIOR | 3R | |
| ROLAND GARROS JUNIOR | 2R | |
| AUSTRALIAN OPEN JUNIOR | [8] | 1R |
2016
| J500OSAKA | [12] | 2R |
2015
| J500OSAKA | 2R |
2014
| J500OSAKA | 1R |
Nation
JPN
Age
25 years old (born in 2000)
World Ranking
ATP Ranking　1419th
Year-end Junior World Ranking
- Year-end 2018 17th
Match Details
US OPEN JUNIOR
| L | 1R | Jonas Forejtek | 1-6 3-6 |
WIMBLEDON JUNIOR
| L | 1R | Trey Hilderbrand | 7-6 6-7 1-6 |
ROLAND GARROS JUNIOR
| W | 1R | Marko Miladinovic | 7-5 3-6 6-4 |
| L | 2R | Sebastian Baez | 6-3 2-6 2-6 |
AUSTRALIAN OPEN JUNIOR
| L | 1R | Wojciech Marek | 3-6 4-6 |
J500OSAKA
| W | 1R | George Davis | 6-2 6-2 |
| W | 2R | Yamato Sueoka | 6-4 6-4 |
| W | 3R | Dane Sweeny | 7-6 6-0 |
| L | QF | Erik Grevelius | WD |
US OPEN JUNIOR
| W | 1R | Michael Vrbensky | 5-7 6-4 6-2 |
| W | 2R | Hugo Gaston | 6-1 2-6 7-6 |
| W | 3R | Menelaos Efstathiou | 6-0 6-7 6-3 |
| L | QF | Axel Geller | 3-6 7-6 4-6 |
WIMBLEDON JUNIOR
| W | 1R | Max Stewart | 6-4 6-4 |
| W | 2R | Timofei Skatov | 7-6 6-3 |
| L | 3R | Axel Geller | 3-6 6-3 1-6 |
ROLAND GARROS JUNIOR
| W | 1R | Louis Dussin | 6-2 6-2 |
| L | 2R | Nicola Kuhn | 7-6 2-6 4-6 |
AUSTRALIAN OPEN JUNIOR
| L | 1R | Federico Iannaccone | 6-0 5-7 2-6 |
J500OSAKA
| W | 1R | Moerani Bouzige | 7-6 6-1 |
| L | 2R | John Bryan Decasa Otico | 4-6 6-7 |
J500OSAKA
| W | 1R | Damon Kesaris | 5-7 7-5 7-5 |
| L | 2R | Mate Valkusz | 0-6 2-6 |
J500OSAKA
| L | 1R | Eero Vasa | 2-6 2-6 |
Junior Tennis Database is a site that summarizes the results of ITF junior tennis tournaments.
Number of registered tournaments: 11227, Number of registered players: 6,794, Number of registered results: 379,102