Zi Yi Ou
2025
| J100Wellington | [11] | 3R |
| J100Christchurch | [12] | 2R |
| J60Ashburton | [6] | 3R |
2024
| J60Changhua-2 | 2R | |
| J60Changhua | 1R | |
| J30Kaohsiung-2 | [6] | Quarter |
| J30Kaohsiung | [5] | 3R |
| J200Tainan | 1R | |
| J30Chiayicounty | [3] | 3R |
| J30Miaoli | [3] | Semi |
| J30Makaticity-2 | [2] | Final |
| J30Makaticity | [2] | Quarter |
| J30Nairobi-3 | [6] | Win |
| J30Nairobi-2 | [6] | Quarter |
| J30Kigali-2 | 1R | |
| J60Singapore | 2R | |
| J30Singapore | 2R |
2023
Nation
TPE
Generation
Born in 2009 (15-16 years old)
World Ranking
Junior World Ranking 633th
Year-end Junior World Ranking
- Year-end 2024 808th
Match Details
2025 J100Wellington
| W | 2R | Darren Yann Junn Lew | 3-0 |
| L | 3R | Gabriel Jessup | 1-6 5-7 |
2025 J100Christchurch
| L | 2R | Mason Vaughan | 3-6 3-6 |
2025 J60Ashburton
| W | 2R | Tekoha Manawatu | 6-2 6-2 |
| L | 3R | Sehun Park | 6-4 1-6 2-6 |
2024 J60Changhua-2
| W | 1R | Te-Yu Hsu | 6-1 6-1 |
| L | 2R | Kuan-Huai Mao | 1-6 4-6 |
2024 J60Changhua
| L | 1R | Hong Xuan Chen | 3-6 5-7 |
2024 J30Kaohsiung-2
| W | 2R | Zachary Sng | 6-2 6-4 |
| W | 3R | Tzu-Yuan Tseng | 6-1 6-1 |
| L | QF | Syue-Lian Chuang | 4-6 1-6 |
2024 J30Kaohsiung
| W | 2R | Hong Kai Fang | 7-6 2-0 |
| L | 3R | Bo Yu Wu | 1-4 5-3 8-10 |
2024 J200Tainan
| L | 1R | Daniel Bien | 0-4 4-2 5-10 |
2024 J30Chiayicounty
| W | 2R | Ming Yu Ko | 3-6 6-2 7-6 |
| L | 3R | Geonha Roh | 3-6 3-6 |
2024 J30Miaoli
| W | 1R | Weibo Huang | 6-0 4-6 7-5 |
| W | 2R | Zheng-Wei Wang | 7-5 6-1 |
| W | QF | Tzu-Yuan Tseng | 6-2 6-3 |
| L | SF | Kuan-Huai Mao | 4-6 2-6 |
2024 J30Makaticity-2
| W | 1R | Shun Wakino | 7-5 6-3 |
| W | 2R | Miguel Iglupas | 6-4 6-4 |
| W | QF | Ethan Reed | 6-4 6-2 |
| W | SF | Kotaro Shirota | 6-2 6-4 |
| L | F | Elijah Max Calaquian | 3-6 6-7 |
2024 J30Makaticity
| W | 1R | Ralf Tobey Cruz | 6-1 6-0 |
| W | 2R | Jiho Yang | 6-3 6-0 |
| L | QF | Mateo Victor Rivas | 5-7 2-6 |
2024 J30Nairobi-3
| W | 2R | Andrei Luca Craciun | 6-2 6-2 |
| W | 3R | Sumukh Marya | 7-6 6-4 |
| W | QF | Yusaku Harashima | 6-3 6-1 |
| W | SF | Uros Zivkovic | 6-4 6-4 |
| W | F | Maxence Faniel | 6-4 6-1 |
2024 J30Nairobi-2
| W | 2R | Guo Jiaming | 6-1 6-1 |
| W | 3R | Clement Wauters | 7-6 6-4 |
| L | QF | Oscar Reilly | 3-6 6-7 |
2024 J30Kigali-2
| L | 1R | Filip Czyrek | 7-6 6-7 0-6 |
2024 J60Singapore
| W | 1R | Tran Quoc Cuong | 4-6 6-4 6-3 |
| L | 2R | Michael Dylan Jimenez | 2-6 4-6 |
2024 J30Singapore
| W | 1R | Ryu Kotikula | 6-3 6-4 |
| L | 2R | Ethan Matthew Koh | 6-7 2-6 |
2023 J30Kaohsiung-2
| W | 1R | Riku Oshima | 6-2 6-4 |
| L | 2R | Kai-An Wu | 7-5 1-6 4-6 |
2023 J30Kaohsiung
| W | 1R | Wan Him Donovan Yim | 6-1 6-2 |
| W | 2R | Xin-An Fa | 6-3 6-3 |
| L | 3R | Cheng En Yu | 6-7 6-7 |
2023 J60Changhua-2
| W | 1R | Wen Chieh Lin | 6-2 6-3 |
| L | 2R | Hudson Baxter | 6-1 6-7 2-6 |
Junior Tennis Database is a site that summarizes the results of ITF junior tennis tournaments.
Number of registered tournaments: 5778, Number of registered players: 4,878, Number of registered results: 222,253