Christopher Kosei Ono
2024
2023
| J30Matsuyama | [4] | 1R |
| J30Gifu | [5] | Quarter |
| J30Chigasaki | [4] | Quarter |
| J60Yamanashi | [5] | Quarter |
| J500Osaka | 2R | |
| J100Kawaguchi | 1R | |
| J100Andong | 1R | |
| J100Kualalumpur | 1R | |
| J100Sarawak | 2R | |
| J60Sunchang | 2R | |
| J60Andong | 2R | |
| J30Kurume | [7] | 2R |
2022
| J5Matsuyama | [7] | 1R |
| J5Gifu | 2R | |
| J5Chigasaki | [7] | Semi |
| Ai Sugiyama Cup | [7] | Semi |
| J5Yamanashi | [7] | 2R |
| J2Nagoya | 2R | |
| J3Kawaguchi | 1R | |
| J4Mikicity-2 | 1R | |
| J4Mikicity | 2R | |
| J5Kurume | 1R |
2021
Generation
Born in 2006 (18-19 years old)
Year-end Junior World Ranking
- Year-end 2023 813th
- Year-end 2022 1074th
- Year-end 2021 1449th
Match Details
2024 J500Osaka
| L | 1R | Vojtech Vales | 5-7 1-6 |
2023 J30Matsuyama
| L | 1R | Yuki Okahashi | 2-6 6-7 |
2023 J30Gifu
| W | 1R | Takuma Minamoto | 6-3 6-1 |
| W | 2R | Zhengjie Wu | 6-1 6-3 |
| L | QF | Min Ho Ko | 1-6 2-6 |
2023 J30Chigasaki
| W | 1R | Sota Uranaka | 6-3 7-5 |
| W | 2R | Zhengjie Wu | 6-3 6-2 |
| L | QF | Gaku Nayuki | 6-3 6-7 5-7 |
2023 J60Yamanashi
| W | 1R | Kou Fujikawa | 6-3 6-2 |
| W | 2R | Rei Sato | 6-3 4-6 6-4 |
| L | QF | Eito Komada | 6-3 5-7 4-10 |
2023 J500Osaka
| W | 1R | Matteo Sciahbasi | 0-6 6-1 7-5 |
| L | 2R | Hayden Jones | 2-6 3-6 |
2023 J100Kawaguchi
| L | 1R | Kriish Tyagi | 4-6 2-6 |
2023 J100Andong
| L | 1R | Se Hyuk Cho | 6-3 1-6 3-6 |
2023 J100Kualalumpur
| L | 1R | Ye Chen | 6-4 1-6 1-6 |
2023 J100Sarawak
| W | 1R | Emir Effendy | 6-0 6-0 |
| L | 2R | Daniel Jovanovski | 1-6 3-6 |
2023 J60Sunchang
| W | 1R | Tae Woo Kim | 6-2 6-3 |
| L | 2R | Hyeon Seok Seo | 4-6 7-5 1-6 |
2023 J60Andong
| W | 1R | Hae Chang Lee | 7-5 6-1 |
| L | 2R | Min Ho Ko | 2-6 2-6 |
2023 J30Kurume
| W | 1R | Haruki Okude | 6-4 3-6 6-4 |
| L | 2R | Hiromasa Koyama | 4-6 6-2 1-6 |
2022 J5Matsuyama
| L | 1R | Shu Hirata | 4-6 4-6 |
2022 J5Gifu
| W | 1R | Yuki Kani | 4-6 6-3 6-2 |
| L | 2R | Hiromasa Koyama | 3-6 4-6 |
2022 J5Chigasaki
| W | 1R | Cody Atkinson | 6-1 6-4 |
| W | 2R | Yuto Miyagawa | 6-4 6-2 |
| W | QF | Ryusuke Inuzuka | 6-2 6-3 |
| L | SF | Yuya Ando | 4-6 6-1 0-6 |
2022 Ai Sugiyama Cup
| W | 1R | Cody Atkinson | 6-1 6-4 |
| W | 2R | Yuto Miyagawa | 6-4 6-2 |
| W | QF | Ryusuke Inuzuka | 6-2 6-3 |
| L | SF | Yuya Ando | 4-6 6-1 0-6 |
2022 J5Yamanashi
| W | 1R | Koshiro Nakamae | 6-2 6-3 |
| L | 2R | Kensuke Kobayashi | 1-6 6-2 0-6 |
2022 J2Nagoya
| W | 1R | Ren Matsumura | 6-3 6-2 |
| L | 2R | Jonathan Irwanto | 1-6 1-6 |
2022 J3Kawaguchi
| L | 1R | Shu Muto | 6-1 1-6 4-10 |
2022 J4Mikicity-2
| L | 1R | Ryosuke Inagawa | 6-3 4-6 2-6 |
2022 J4Mikicity
| W | 1R | Aoi Ooka | 6-2 2-6 6-3 |
| L | 2R | Satoru Nakajima | 5-7 2-6 |
2022 J5Kurume
| L | 1R | Shion Itsusaki | 2-6 1-6 |
2021 Ai Sugiyama Cup
| L | 1R | Haruta Sumi | 1-6 6-3 0-6 |
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