Shion Itsusaki
2025
| J300Nonthaburiclosedregionalchampionhsips | [7] | 2R |
| J300Kuching | [5] | 2R |
| J300Nonthaburi | [9] | 3R |
| J200Nonthaburi | [7] | Quarter |
| Australian Open Junior | 1R | |
| J300Traralgon | 2R |
2024
| J200Hongkong | [8] | Win |
| J100Hongkong | [4] | Win |
| J30Osaka | [1] | Win |
| J300Wanju | [16] | 3R |
| J100Kawaguchi | [6] | Win |
| J500Osaka | 3R | |
| J200Chuncheon | 1R | |
| J60Mikicity-2 | [5] | Win |
| J30Kurume | [1] | Win |
2023
| J30Osaka | [1] | Semi |
| J200Nagoya | 2R | |
| J60Mikicity-2 | [3] | Semi |
| J60Mikicity | [3] | Semi |
| J60Sunchang | Quarter | |
| J60Andong | 1R | |
| J30Kurume | [4] | Quarter |
2022
| J5Matsuyama | [4] | Semi |
| J5Gifu | [8] | Quarter |
| Ai Sugiyama Cup | [5] | Quarter |
| J5Chigasaki | [5] | Quarter |
| J2Nagoya | 3R | |
| Jaosaka | 1R | |
| J3Kawaguchi | 1R | |
| J4Mikicity-2 | [8] | 2R |
| J4Mikicity | [8] | 1R |
| J5Nonthaburi-2 | [7] | 3R |
| J4Eindhoven | 1R | |
| J4Hillegom | 3R | |
| J4Thehague | 1R | |
| J4Nonthaburi | 2R | |
| J4Seremban-2 | [16] | 3R |
| J4Seremban | [14] | 3R |
| J5Kurume | [8] | Semi |
Generation
Born in 2007 (17-18 years old)
World Ranking
Junior World Ranking　69th
ATP Ranking　1671th
Year-end Junior World Ranking
- Year-end 2024 96th
- Year-end 2023 630th
- Year-end 2022 748th
- Year-end 2021 1312th
Match Details
2025 J300Nonthaburiclosedregionalchampionhsips
| L | 2R | Samarth Sahita | 3-6 3-6 |
2025 J300Kuching
| L | 2R | Ymerali Ibraimi | 4-6 6-4 0-6 |
2025 J300Nonthaburi
| W | 2R | Aaron Gabet | 1-6 6-1 6-2 |
| L | 3R | Kuan-Shou Chen | 2-6 4-6 |
2025 J200Nonthaburi
| W | 2R | Pavel Skvortcov | 3-6 6-3 6-3 |
| W | 3R | Jake Dembo | 6-4 6-4 |
| L | QF | Savva Rybkin | 2-6 3-6 |
2025 Australian Open Junior
| L | 1R | Gabriele Crivellaro | 1-6 6-7 |
2025 J300Traralgon
| W | 1R | Ethan Domingo | 6-2 6-4 |
| L | 2R | Maxwell Exsted | 4-6 1-6 |
2024 J200Hongkong
| W | 1R | Yen-Chun Wang | 6-3 2-6 6-1 |
| W | 2R | Ruslan Kastsiukevich | 6-2 1-6 6-2 |
| W | QF | Moobeen Kim | 6-3 6-2 |
| W | SF | Ilya Maltsev | 7-6 6-1 |
| W | F | Hitesh Chauhan | 6-3 6-1 |
2024 J100Hongkong
| W | 1R | Haiyi Qin | 6-1 6-4 |
| W | 2R | Jeffrey Strydom | 6-2 6-0 |
| W | QF | Jacob Lee | 6-1 6-1 |
| W | SF | Yauheni Bursau | 6-2 6-2 |
| W | F | Ilya Maltsev | 7-5 5-7 6-2 |
2024 J30Osaka
| W | 1R | Riku Kurashita | 6-1 6-0 |
| W | 2R | Sota Miyazaki | 6-2 6-1 |
| W | QF | Ryo Kikawa | 6-4 6-0 |
| W | SF | Sohji Nishiyama | 6-3 7-5 |
| W | F | Yuki Okahashi | 6-1 4-6 6-3 |
2024 J300Wanju
| W | 1R | Varun Verma | 6-3 7-6 |
| W | 2R | Wenbo Bai | 6-4 6-4 |
| L | 3R | Yeonsu Jeong | 3-6 4-6 |
2024 J100Kawaguchi
| W | 1R | Kango Endoh | 6-0 6-2 |
| W | 2R | Naoto Tomizawa | 6-3 7-6 |
| W | QF | Wenbo Bai | 6-1 6-2 |
| W | SF | Ren Matsumura | 7-6 6-3 |
| W | F | Hyu Kawanishi | 6-1 6-2 |
2024 J500Osaka
| W | 1R | Benjamin Willwerth | 6-4 6-3 |
| W | 2R | Rohan Hazratwala | 6-3 6-0 |
| L | 3R | Jan Kumstat | 4-6 4-6 |
2024 J200Chuncheon
| L | 1R | Moobeen Kim | 6-2 2-6 5-7 |
2024 J60Mikicity-2
| W | 1R | Thanathip Poti | 6-1 6-4 |
| W | 2R | Maki Takei | 6-3 6-1 |
| W | QF | Rafalentino Ali Da Costa | 6-3 6-3 |
| W | SF | Kanata Ozaki | 6-7 6-3 6-2 |
| W | F | Kaigaoge Kang | - - - |
2024 J30Kurume
| W | 1R | Sota Kagawa | 6-3 6-2 |
| W | 2R | Ko Nagashima | 6-2 6-2 |
| W | QF | Ryuto Suzuki | 6-3 6-1 |
| W | SF | Ryunosuke Kabasawa | 6-2 7-5 |
| W | F | Naoto Tomizawa | 7-5 6-4 |
2023 J30Osaka
| W | 1R | Haruki Mizuno | 6-1 6-1 |
| W | 2R | Hakuto Imanishi | 6-3 6-0 |
| W | QF | Haruki Oshita | 6-1 6-2 |
| L | SF | Soma Fukuhara | 2-6 2-6 |
2023 J200Nagoya
| W | 1R | Eito Komada | 6-0 7-5 |
| L | 2R | Marek Nano | 3-6 6-4 3-6 |
2023 J60Mikicity-2
| W | 1R | Yuto Miyagawa | 7-6 6-1 |
| W | 2R | Kai Miyatake | 6-3 6-2 |
| W | QF | Yuki Okahashi | 6-1 6-4 |
| L | SF | Kazuma Kimura | 6-7 1-6 |
2023 J60Mikicity
| W | 1R | Haruto Kusunoki | 3-6 6-2 6-1 |
| W | 2R | Yuta Dokai | 6-4 6-0 |
| W | QF | Gaku Nayuki | 6-4 7-6 |
| L | SF | Kazuma Kimura | 6-2 4-6 0-6 |
2023 J60Sunchang
| W | 1R | Moobeen Kim | 2-6 7-5 6-4 |
| W | 2R | Taisei Hata | 6-2 6-2 |
| L | QF | Se Hyun Kim | 1-6 1-6 |
2023 J60Andong
| L | 1R | Se Hyun Kim | 0-6 3-6 |
2023 J30Kurume
| W | 1R | Shu Hirata | 6-2 6-4 |
| W | 2R | Naoki Watanabe | 6-3 6-3 |
| L | QF | Yamato Yukawa | 3-6 2-6 |
2022 J5Matsuyama
| W | 1R | Kosuke Asada | 6-1 6-0 |
| W | 2R | Taisei Hata | 7-5 1-6 6-2 |
| W | QF | Shota Shima | 6-1 6-2 |
| L | SF | Natsuki Yamamoto | 7-5 0-6 2-6 |
2022 J5Gifu
| W | 1R | Yuki Okahashi | 6-0 6-2 |
| W | 2R | Yuya Ando | 6-3 6-1 |
| L | QF | So Ogiri | 7-5 3-6 6-7 |
2022 Ai Sugiyama Cup
| W | 1R | Hirai Nagashima | 7-5 6-0 |
| W | 2R | Ryusei Miyazato | 7-5 6-3 |
| L | QF | Hikaru Takahashi | 4-6 3-6 |
2022 J5Chigasaki
| W | 1R | Hirai Nagashima | 7-5 6-0 |
| W | 2R | Ryusei Miyazato | 7-5 6-3 |
| L | QF | Hikaru Takahashi | 4-6 3-6 |
2022 J2Nagoya
| W | 1R | Yuya Ando | 6-4 6-3 |
| W | 2R | Takamasa Mishiro | 7-5 6-1 |
| L | 3R | Volodymyr Iakubenko | 2-6 1-6 |
2022 Jaosaka
| L | 1R | Adhithya Ganesan | 2-6 2-6 |
2022 J3Kawaguchi
| L | 1R | Toa Maeda | 5-7 3-6 |
2022 J4Mikicity-2
| W | 1R | Ko Fujikawa | 6-2 6-2 |
| L | 2R | Se Hyuk Cho | 2-6 6-7 |
2022 J4Mikicity
| L | 1R | Yamato Yukawa | 2-6 2-6 |
2022 J5Nonthaburi-2
| W | 2R | Pratyaksh Xxx | 6-3 6-2 |
| L | 3R | Minghui Zhang | 6-7 1-6 |
2022 J4Eindhoven
| L | 1R | Christos Glavas | 6-7 6-3 3-6 |
2022 J4Hillegom
| W | 1R | Boudewijn Willems | 7-5 6-2 |
| W | 2R | Hugo Soares | 4-6 6-2 |
| L | 3R | Lars Wagenaar | 2-6 6-7 |
2022 J4Thehague
| L | 1R | Luke Tollenaar | 2-6 6-3 6-7 |
2022 J4Nonthaburi
| W | 1R | Putu Agassi Pranata Nida | 6-1 6-2 |
| L | 2R | Rajata Thamcharoensatit | 3-6 1-6 |
2022 J4Seremban-2
| W | 2R | Bao Le | 4-1 4-1 |
| L | 3R | Mitsuki Wei Kang Leong | 1-6 0-6 |
2022 J4Seremban
| W | 2R | Enzo Michel | 6-1 6-0 |
| L | 3R | Mitsuki Wei Kang Leong | 6-3 3-6 2-6 |
2022 J5Kurume
| W | 1R | Christopher Kosei Ono | 6-2 6-1 |
| W | 2R | Hayato Saito | 6-3 6-3 |
| W | QF | Hiiro Sakamoto | 4-6 7-5 7-6 |
| L | SF | Shu Muto | 4-6 6-3 3-6 |
Junior Tennis Database is a site that summarizes the results of ITF junior tennis tournaments.
Number of registered tournaments: 9232, Number of registered players: 5,739, Number of registered results: 303,630