Shunsuke Mitsui
2020
| ROLAND GARROS JUNIOR | 1R | |
| J1 NONTHABURI | [2] | Quarter |
| AUSTRALIAN OPEN JUNIOR | [3] | 2R |
| J1 TRARALGON | [2] | 1R |
2019
| JAPLANTATION | [3] | 2R |
| J1 BRADENTON | [3] | 2R |
| JB1 SEOGWIPO | [2] | 3R |
| J2 CHUNCHEON | [1] | Win |
| J2 NAGOYA | [1] | 3R |
| JAOSAKA | [3] | Quarter |
| US OPEN JUNIOR | [12] | 1R |
| WIMBLEDON JUNIOR | [14] | 2R |
| J1 ROEHAMPTON | [13] | 1R |
| ROLAND GARROS JUNIOR | [14] | 1R |
| J1 CHARLEROI-MARCINELLE | [2] | 3R |
| 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
| J1 BRADENTONFL | 1R | |
| J2 TINHAUHONGKONG | [2] | Semi |
| J2 NAGOYA | [14] | Final |
| J500OSAKA | 2R | |
| J4 HYOGO-2 | [1] | Win |
| J4 HYOGO | [2] | 2R |
| J4 CHANGHUACOUNTY | [1] | 2R |
| J2 TAINAN | [4] | Quarter |
| J3 BEIJING | [3] | Semi |
| J4 BEIJING | [1] | Quarter |
| J1 SARAWAK | Quarter | |
| J1 LAMBARE | 1R |
2017
| J4 MANILA-2 | [2] | Semi |
| J4 MANILA | [1] | Win |
| J2 NAGOYA | 2R | |
| J500OSAKA | 1R | |
| J4 HYOGO-2 | [5] | Final |
| J4 HYOGO | [8] | Semi |
| J3 AUCKLAND | 2R | |
| J4 CHRISTCHURCH | 3R |
Nation
JPN
Age
23 years old (born in 2002)
World Ranking
ATP Ranking　519th
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 |
JAPLANTATION
| W | 1R | Alexander Bernard | 5-7 7-5 6-1 |
| L | 2R | Inaki Montes-De La Torre | 1-6 4-6 |
J1 BRADENTON
| W | 1R | Luke Casper | 6-1 6-3 |
| L | 2R | Max Alcala Gurri | 6-3 6-7 1-6 |
JB1 SEOGWIPO
| W | 1R | Bohua Dong | 5-7 6-3 6-2 |
| W | 2R | Min Seong Kim | 6-3 7-6 |
| L | 3R | Alex Bulte | 6-4 4-6 6-7 |
J2 CHUNCHEON
| W | 1R | Adrien Burdet | 6-4 6-2 |
| W | 2R | Yan Cheng Chen | 6-1 6-3 |
| W | QF | Lui Maxted | 6-3 6-4 |
| W | SF | Maks Kasnikowski | 7-5 6-2 |
| W | F | Dong Ju Kim | 7-6 3-0 |
J2 NAGOYA
| W | 2R | Raphael Collignon | 7-5 7-5 |
| L | 3R | Max Westphal | 2-6 6-4 1-6 |
JAOSAKA
| W | 1R | Szymon Kielan | 6-4 6-4 |
| W | 2R | Max Westphal | 7-5 7-5 |
| W | 3R | Harry Wendelken | 6-4 6-7 6-1 |
| L | QF | Jeffrey Von Der Schulenburg | 5-7 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 |
J1 ROEHAMPTON
| L | 1R | Roman Andres Burruchaga | 1-6 4-6 |
ROLAND GARROS JUNIOR
| L | 1R | Peter Makk | 1-6 5-7 |
J1 CHARLEROI-MARCINELLE
| W | 2R | Andres Martin | 6-4 6-4 |
| L | 3R | Leandro Riedi | 1-6 3-6 |
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 |
J1 BRADENTONFL
| L | 1R | Emilio Nava | 3-6 1-6 |
J2 TINHAUHONGKONG
| W | 1R | Linang Xiao | 6-1 4-6 6-4 |
| W | 2R | Yi Jui Lo | 6-4 6-3 |
| W | QF | Digvijay Pratap Singh | 6-1 1-6 7-5 |
| L | SF | Wai Yu Kai | 6-7 2-6 |
J2 NAGOYA
| W | 2R | Gaku Moriya | 6-3 6-0 |
| W | 3R | Louis Herman | 6-4 6-7 6-3 |
| W | QF | Keisuke Saitoh | 6-4 6-4 |
| W | SF | Blu Baker | 6-3 6-4 |
| L | F | Gauthier Onclin | 6-2 2-6 4-6 |
J500OSAKA
| W | 1R | Alex Bulte | 7-6 6-3 |
| L | 2R | Keisuke Saitoh | 6-0 0-6 4-6 |
J4 HYOGO-2
| W | 1R | Rintaro Yamada | 7-5 6-3 |
| W | 2R | Riku Takahata | 6-1 7-6 |
| W | QF | Taiyo Yamanaka | 6-4 6-2 |
| W | SF | Keisuke Saitoh | 7-6 6-2 |
| W | F | Tomoya Fujiwara | 6-2 6-1 |
J4 HYOGO
| W | 1R | Jin Gu | 6-3 7-5 |
| L | 2R | Noritaka Koizumi | 3-6 7-5 5-7 |
J4 CHANGHUACOUNTY
| L | 2R | Jungwon Park | 7-6 2-6 1-6 |
J2 TAINAN
| W | 1R | Chia-Fan Tsao | 6-1 6-1 |
| W | 2R | Pengyu Lu | 6-7 6-3 6-1 |
| L | QF | Sacchitt Sharrma | 5-7 7-6 6-7 |
J3 BEIJING
| W | 1R | Xian Yao Zhou | 6-2 6-4 |
| W | 2R | Abhimanyu Vannemreddy | 6-4 5-7 6-4 |
| W | QF | Ki Lung Ng | 6-2 6-2 |
| L | SF | Shintaro Mochizuki | 6-3 4-6 6-7 |
J4 BEIJING
| W | 1R | Meng Sun | 6-0 6-2 |
| W | 2R | Chenyu Fang | 6-1 6-0 |
| W | 3R | Qian Sun | 6-3 7-5 |
| L | QF | Geun Jun Kim | 6-7 6-4 4-6 |
J1 SARAWAK
| W | 1R | Yuttana Charoenphon | 7-6 7-5 |
| W | 2R | Megh Bhargav Patel | 3-6 6-3 6-2 |
| W | 3R | Ray Ho | 6-4 4-0 |
| L | QF | Jiri Lehecka | 3-6 2-6 |
J1 LAMBARE
| L | 1R | Luciano Tacchi | 3-6 6-7 |
J4 MANILA-2
| W | 1R | Joseph Gabriel Tiamson | 6-3 6-4 |
| W | 2R | Manuel Balce Iii | 6-0 6-2 |
| W | QF | Michael Francis Eala | 6-0 6-3 |
| L | SF | Arthur Craig Pantino | 7-6 3-6 0-6 |
J4 MANILA
| W | 1R | Marco Ayala | 6-0 6-0 |
| W | 2R | Jericho Grollman | 6-2 6-1 |
| W | QF | Shamirul Shahril Mohd Adam Das | 6-0 6-2 |
| W | SF | Odeda Muhammad Arazza | 6-1 6-1 |
| W | F | Arthur Craig Pantino | 6-3 6-3 |
J2 NAGOYA
| W | 1R | Hisanori Suzuki | 6-3 6-4 |
| L | 2R | Thomas Bosancic | 2-6 6-7 |
J500OSAKA
| L | 1R | Yanki Erel | 1-6 3-6 |
J4 HYOGO-2
| W | 1R | Michael Francis Eala | 6-4 6-4 |
| W | 2R | Junki Shimizu | 6-4 6-2 |
| W | QF | Tomoya Fujiwara | 4-6 6-0 6-4 |
| W | SF | Pengyu Lu | 6-4 6-3 |
| L | F | Hikaru Shiraishi | 2-6 7-5 2-6 |
J4 HYOGO
| W | 1R | Hikaru Takeda | 6-4 6-2 |
| W | 2R | Taiyo Yamanaka | 6-4 6-2 |
| W | QF | Junki Shimizu | 7-5 7-5 |
| L | SF | Seita Watanabe | 3-6 7-5 4-6 |
J3 AUCKLAND
| W | 1R | Trent Massam | 3-6 7-5 6-2 |
| L | 2R | Kody Pearson | 4-6 1-6 |
J4 CHRISTCHURCH
| W | 1R | David Qariaqus | 6-3 6-2 |
| W | 2R | Chris Zhang | 6-1 6-1 |
| L | 3R | Ryuya Ata | 2-6 2-6 |
Junior Tennis Database is a site that summarizes the results of ITF junior tennis tournaments.
Number of registered tournaments: 14549, Number of registered players: 7,577, Number of registered results: 451,713