Hiiro Sakamoto
2023
2022
| J5Gifu | [6] | Final |
| J5Chigasaki | [3] | 2R |
| Ai Sugiyama Cup | [3] | 2R |
| J5Yamanashi | [3] | Win |
| J2Nagoya | 1R | |
| Jaosaka | 1R | |
| J3Kawaguchi | 2R | |
| J4Mikicity | [6] | Quarter |
| J3Istanbul-3 | 2R | |
| J5Istanbul | [14] | 1R |
| J5Kurume | [4] | Quarter |
2021
2019
Generation
Born in 2005 (19-20 years old)
Year-end Junior World Ranking
- Year-end 2023 2518th
- Year-end 2022 575th
- Year-end 2021 944th
- Year-end 2020 2893th
- Year-end 2019 3018th
Match Details
2023 J500Osaka
| L | 1R | Joel Schwaerzler | 3-6 2-6 |
2023 J200Villach
| L | 1R | Tymur Bieldiugin | 0-6 3-6 |
2023 J200Kolkata
| L | 1R | Pranav Karthik | 6-3 5-7 4-6 |
2022 J5Gifu
| W | 1R | Hudson Baxter | 7-5 6-2 |
| W | 2R | Yuto Konishi | 6-3 6-2 |
| W | QF | Hiromasa Koyama | 6-3 6-2 |
| W | SF | So Ogiri | 7-5 2-6 6-4 |
| L | F | Kazuma Kimura | 2-6 4-6 |
2022 J5Chigasaki
| W | 1R | Ko Nagashima | 4-6 6-4 6-2 |
| L | 2R | Yuya Ando | 4-6 4-6 |
2022 Ai Sugiyama Cup
| W | 1R | Ko Nagashima | 4-6 6-4 6-2 |
| L | 2R | Yuya Ando | 4-6 4-6 |
2022 J5Yamanashi
| W | 1R | Kanata Ozaki | 6-1 6-2 |
| W | 2R | Kotaro Matsumura | 6-1 6-2 |
| W | QF | Taisei Hata | 6-1 5-7 7-5 |
| W | SF | Natsuki Yamamoto | 6-4 6-4 |
| W | F | Ryuto Suzuki | 6-0 7-5 |
2022 J2Nagoya
| L | 1R | Ryo Tabata | 0-6 4-6 |
2022 Jaosaka
| L | 1R | Asahi Harazaki | 1-6 3-6 |
2022 J3Kawaguchi
| W | 1R | Takamasa Mishiro | 4-6 6-1 10-6 |
| L | 2R | Toa Maeda | 7-6 5-7 4-10 |
2022 J4Mikicity
| W | 1R | Yuki Karatsu | 6-1 1-6 6-3 |
| W | 2R | Hikaru Takahashi | 6-7 6-2 6-2 |
| L | QF | So Ogiri | 6-2 5-7 4-6 |
2022 J3Istanbul-3
| W | 1R | Kerem Ozlale | 5-7 6-3 6-1 |
| L | 2R | Kerem Yilmaz | 3-6 1-6 |
2022 J5Istanbul
| L | 1R | Ivan Gretskiy | 0-6 3-6 |
2022 J5Kurume
| W | 1R | Ryosuke Inagawa | 6-2 6-3 |
| W | 2R | Ryo Tabata | 4-6 6-2 7-5 |
| L | QF | Shion Itsusaki | 6-4 5-7 6-7 |
2021 J5Nairobi
| L | 1R | Theo Herrmann | 0-6 7-6 3-6 |
2019 Ai Sugiyama Cup
| L | 1R | Asahi Harazaki | 1-6 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