Shunsuke Mitsui
2020
| ROLAND GARROS JUNIOR | 1R | |
| J1 NONTHABURI | [2] | Quarter |
| AUSTRALIAN OPEN JUNIOR | [3] | 2R |
| J1 TRARALGON | [2] | 1R |
2019
| US OPEN JUNIOR | [12] | 1R |
| WIMBLEDON JUNIOR | [14] | 2R |
| ROLAND GARROS JUNIOR | [14] | 1R |
| JAMILAN | [6] | 1R |
| J1 SARAWAK | [2] | Win |
| J1 NONTHABURI | [2] | Final |
| JAPORTOALEGRE | [9] | 2R |
| J1 LAMBARE | [6] | Semi |
| AUSTRALIAN OPEN JUNIOR | 1R | |
| J1 TRARALGON | 1R |
2018
| J500OSAKA | 2R |
2017
| J500OSAKA | 1R |
Nation
JPN
Age
23 years old (born in 2002)
World Ranking
ATP Ranking　520th
Year-end Junior World Ranking
- Year-end 2020 41th
- Year-end 2019 10th
- Year-end 2018 73th
Match Details
ROLAND GARROS JUNIOR
| L | 1R | Luciano Darderi | 1-6 4-6 |
J1 NONTHABURI
| W | 2R | Reece Falck | 5-7 7-6 6-2 |
| W | 3R | Iiro Vasa | 6-4 6-2 |
| L | QF | Coleman Wong | 7-6 4-6 1-6 |
AUSTRALIAN OPEN JUNIOR
| W | 1R | Xiaofei Wang | 7-6 6-4 |
| L | 2R | Martin Krumich | 3-6 2-6 |
J1 TRARALGON
| L | 1R | Biagio Gramaticopolo | 6-0 3-6 3-6 |
US OPEN JUNIOR
| L | 1R | Aidan Mayo | 4-6 5-7 |
WIMBLEDON JUNIOR
| W | 1R | Juan Bautista Torres | 6-7 6-2 6-3 |
| L | 2R | Nicolas Alvarez Varona | 2-6 3-6 |
ROLAND GARROS JUNIOR
| L | 1R | Peter Makk | 1-6 5-7 |
JAMILAN
| L | 1R | Roman Andres Burruchaga | 3-6 0-6 |
J1 SARAWAK
| W | 2R | Piotr Pawlak | 6-3 6-1 |
| W | 3R | Yu Zhang | 6-3 6-2 |
| W | QF | Xiaofei Wang | - - - |
| W | SF | Dane Sweeny | 6-2 6-3 |
| W | F | Kevin Chahoud | 7-6 6-4 |
J1 NONTHABURI
| W | 2R | Coleman Wong | 5-7 6-2 6-1 |
| W | 3R | Martin Krumich | 6-3 6-4 |
| W | QF | Tristan Schoolkate | 6-3 6-1 |
| W | SF | Chen Dong | 6-4 6-4 |
| L | F | Dane Sweeny | 4-6 7-5 1-6 |
JAPORTOALEGRE
| W | 1R | Mateo Gomez | 6-4 6-0 |
| L | 2R | Pedro Boscardin Dias | 4-6 7-5 1-6 |
J1 LAMBARE
| W | 2R | Eduardo Taiguara | 2-6 6-4 6-3 |
| W | 3R | Nicolas Ocana Lavoie | 6-4 6-4 |
| W | QF | Khololwam Montsi | 6-4 0-6 6-1 |
| L | SF | Carlos Gimeno Valero | 2-6 3-6 |
AUSTRALIAN OPEN JUNIOR
| L | 1R | Zane Khan | 6-7 7-6 2-6 |
J1 TRARALGON
| L | 1R | Cannon Kingsley | 1-6 3-6 |
J500OSAKA
| W | 1R | Alex Bulte | 7-6 6-3 |
| L | 2R | Keisuke Saitoh | 6-0 0-6 4-6 |
J500OSAKA
| L | 1R | Yanki Erel | 1-6 3-6 |
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