Kensuke Kobayashi
2025
| J60Seremban | [9] | (continue) |
| J100Almaty-2 | 1R | |
| J100Almaty | 2R | |
| J60Mikicity-2 | [7] | Quarter |
| J60Mikicity | [6] | 2R |
| J30Munakata | [2] | Final |
| J60Singapore-2 | Quarter | |
| J60Hongkong | Quarter | |
| J60Guangzhou | [11] | Quarter |
2024
| J30Gifu | Semi | |
| J30Matsuyama | [4] | Final |
| J60Hokuto-City | [7] | Quarter |
| J100Kawaguchi | 1R | |
| J60Eindhoven | 1R | |
| J60Hillegom | 2R | |
| J60Mikicity-2 | 1R | |
| J60Mikicity | 2R | |
| J60Ulcinj | 1R | |
| J30Skopje | [5] | 2R |
| J60Skopje | [12] | 2R |
| J30Nis | [2] | 2R |
| J30Kurume | [6] | 2R |
| J100Auckland | 3R | |
| J60Wellington | 3R | |
| J60Christchurch | [16] | 3R |
2023
| J30Matsuyama | 1R | |
| J30Gifu | 1R | |
| J30Chigasaki | Quarter | |
| J60Yamanashi | 2R | |
| J30Osaka | 2R | |
| J100Kawaguchi | 1R | |
| J60Mikicity | 1R | |
| J60Dededo | 1R |
2022
| Ai Sugiyama Cup | 1R | |
| J5Chigasaki | 1R | |
| J5Yamanashi | Quarter |
Generation
Born in 2009 (15-16 years old)
World Ranking
Junior World Ranking　767th
Year-end Junior World Ranking
- Year-end 2024 851th
- Year-end 2023 1826th
- Year-end 2022 2846th
Match Details
2025 J60Seremban
2025 J100Almaty-2
| L | 1R | Jan Hemetzberger | 6-4 4-6 4-6 |
2025 J100Almaty
| W | 1R | Rodion Traigel | 6-3 6-3 |
| L | 2R | Wonmin Kim | 2-6 1-6 |
2025 J60Mikicity-2
| W | 1R | Kotaro Shirota | 6-3 6-3 |
| W | 2R | Aoi Ishizaki | 7-6 6-3 |
| L | QF | Kanata Ozaki | 4-6 6-3 3-6 |
2025 J60Mikicity
| W | 1R | Kazunari Yshii | 6-1 6-3 |
| L | 2R | Kango Endoh | 2-6 6-3 3-6 |
2025 J30Munakata
| W | 1R | Kaito Tokukura | 6-3 0-6 6-4 |
| W | 2R | Ryo Furukawa | 7-5 7-6 |
| W | QF | Junya Kawamura | 6-7 7-5 6-2 |
| W | SF | Yuta Amano | 7-6 6-1 |
| L | F | Koki Nara | 3-6 6-3 4-10 |
2025 J60Singapore-2
| W | 1R | Michal Ihsan Wicaksana | 6-2 6-4 |
| W | 2R | Xin Zhou | 7-5 6-2 |
| L | QF | Sota Kagawa | 4-6 4-6 |
2025 J60Hongkong
| W | 1R | Wan Him Donovan Yim | 6-3 6-0 |
| W | 2R | Xianfeng Chen | 7-5 6-3 |
| L | QF | Sin Hang Tam | 2-6 7-6 3-6 |
2025 J60Guangzhou
| W | 1R | Zecheng Pan | 6-1 6-2 |
| W | 2R | Zi Yun Gu | 6-2 7-6 |
| W | 3R | Xianfeng Chen | 6-2 6-4 |
| L | QF | Sin Hang Tam | 6-7 7-6 2-6 |
2024 J30Gifu
| W | 1R | Jaejun Kim | 6-3 6-1 |
| W | 2R | Shotaro Yamamoto | 6-2 6-4 |
| W | QF | Daniel Yang | 6-3 6-2 |
| L | SF | Shintaro Ogaki | 3-6 4-6 |
2024 J30Matsuyama
| W | 1R | Shuya Machida | 7-5 6-1 |
| W | 2R | Sora Kaneko | 7-5 6-4 |
| W | QF | Daniel Yang | 3-6 6-3 10-8 |
| W | SF | Hikaru Hieda | 7-5 6-4 |
| L | F | Yuta Amano | 1-6 4-6 |
2024 J60Hokuto-City
| W | 1R | Kyungbeen An | 6-0 6-0 |
| W | 2R | Shun Wakino | 6-2 6-3 |
| L | QF | Yoshihiro Sakurai | 3-6 6-1 3-6 |
2024 J100Kawaguchi
| L | 1R | Wenbo Bai | 3-6 4-6 |
2024 J60Eindhoven
| L | 1R | Stefan Mos | 4-6 2-6 |
2024 J60Hillegom
| W | 1R | Boris Van Ruiten | 1-6 7-5 6-2 |
| L | 2R | Timothee Andriveau | 2-6 3-6 |
2024 J60Mikicity-2
| L | 1R | Yuta Dokai | 4-6 4-6 |
2024 J60Mikicity
| W | 1R | Sota Kagawa | 6-2 6-4 |
| L | 2R | Kanata Ozaki | 3-6 0-6 |
2024 J60Ulcinj
| L | 1R | Andrej Paunovic | 6-1 6-7 3-6 |
2024 J30Skopje
| W | 1R | Maksimilijan Aleksovski | 6-1 6-4 |
| L | 2R | Ognjen Jagrovic | 2-6 7-6 4-6 |
2024 J60Skopje
| L | 2R | Jovan Tomovic | 2-6 3-6 |
2024 J30Nis
| W | 1R | Egor Zakharov | 6-0 1-0 |
| L | 2R | Kristian Vukovic | 1-6 4-6 |
2024 J30Kurume
| W | 1R | Kanari Izumisawa | 6-3 6-2 |
| L | 2R | Ryuto Suzuki | 3-6 3-6 |
2024 J100Auckland
| W | 1R | Flynn Coventry-Searle | 7-5 6-3 |
| W | 2R | Josh Hinton | 6-3 6-0 |
| L | 3R | Kai Milburn | 4-6 2-6 |
2024 J60Wellington
| W | 1R | Lachlan King | 6-4 7-5 |
| W | 2R | Jacob Kailiang Shen | 6-2 6-2 |
| L | 3R | Alex Morris | 1-6 3-6 |
2024 J60Christchurch
| W | 2R | Chan Min | 7-6 6-0 |
| L | 3R | Jonty Giesen | 1-6 4-6 |
2023 J30Matsuyama
| L | 1R | Taku Ito | 3-6 5-7 |
2023 J30Gifu
| L | 1R | Kenta Kawada | 3-6 3-6 |
2023 J30Chigasaki
| W | 1R | Riu Takahashi | 6-1 6-2 |
| W | 2R | Shun Wakino | 6-4 6-1 |
| L | QF | Koshiro Nakamae | 1-6 0-6 |
2023 J60Yamanashi
| W | 1R | Kohei Konishi | 6-4 6-3 |
| L | 2R | Eito Komada | 2-6 3-6 |
2023 J30Osaka
| W | 1R | Ryohei Nishino | 6-1 6-1 |
| L | 2R | Hikaru Takahashi | 3-6 2-6 |
2023 J100Kawaguchi
| L | 1R | Rohan Belday | 1-6 1-6 |
2023 J60Mikicity
| L | 1R | Hakuto Imanishi | 4-6 1-6 |
2023 J60Dededo
| L | 1R | Juan Kim | 4-6 2-6 |
2022 Ai Sugiyama Cup
| L | 1R | Yuto Oki | 4-6 3-6 |
2022 J5Chigasaki
| L | 1R | Yuto Oki | 4-6 3-6 |
2022 J5Yamanashi
| W | 1R | Sora Otani | 6-2 6-0 |
| W | 2R | Christopher Kosei Ono | 6-1 2-6 6-0 |
| L | QF | Natsuki Yamamoto | 2-6 1-6 |
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