Kohshi Ishibashi
Generation
Born in 2007 (17-18 years old)
World Ranking
Junior World Ranking　142th
Year-end Junior World Ranking
- Year-end 2024 167th
- Year-end 2023 747th
- Year-end 2022 1108th
- Year-end 2021 1831th
Rival
Charlie Valentine (2-0)
- [2025] J100ISTANBUL-3 0-6 6-4 6-4
- [2024] J100SANTODOMINGO 6-1 6-4
Yannik Alvarez (1-1)
- [2024] J100SANTODOMINGO 6-1 6-2
- [2024] J100SANTODOMINGO-2 0-6 1-6
Erik Schinnerer (1-1)
- [2025] J200SANTODOMINGO-2 4-6 6-2 3-6
- [2024] J100SANTODOMINGO-2 6-3 7-5
Oluwaseun Peter Ogunsakin (1-1)
- [2024] J100PRETORIA 3-6 2-6
- [2024] J300DURBAN 7-6 3-6 6-2
Nathan Mansfield (1-1)
- [2024] J60GUATEMALA 3-6 2-6
- [2024] J60GUATEMALA-2 6-3 5-7 6-0
Match Details
| L | 2R | Samarth Sahita | 5-7 6-1 6-7 |
| W | 1R | Aren Baybars | 7-5 6-1 |
| W | 2R | Filip Kosinski | 6-3 7-5 |
| W | 3R | Lucian Stefan Andrei | 6-4 6-1 |
| W | QF | Charlie Valentine | 0-6 6-4 6-4 |
| L | SF | Philipp Dolotov | 3-6 3-6 |
| L | 1R | Arsenii Lesniak | 4-6 7-6 4-6 |
| L | 2R | Erik Schinnerer | 4-6 6-2 3-6 |
| W | 1R | Sungmin Lee | 6-1 7-5 |
| W | 2R | Leo Lee | 6-1 6-2 |
| L | 3R | Moobeen Kim | 1-6 4-6 |
| W | 2R | Chase Zhao | 7-6 7-5 |
| W | 3R | Kai Milburn | 6-4 6-3 |
| L | QF | Cruz Hewitt | 2-6 6-7 |
| W | 2R | Nicholas Mekhael | 3-6 6-4 6-2 |
| W | 3R | Erik Schinnerer | 6-3 7-5 |
| W | QF | Jossting Cruz | 2-6 7-5 6-2 |
| W | SF | Oliver Sanders | 6-1 6-2 |
| L | F | Yannik Alvarez | 0-6 1-6 |
| W | 2R | Miguel Baquero | 6-1 6-0 |
| W | 3R | Jacob Lee | 6-3 6-4 |
| W | QF | Yannik Alvarez | 6-1 6-2 |
| W | SF | Charlie Valentine | 6-1 6-4 |
| L | F | Yubel Ubri | 2-6 6-0 2-6 |
| W | 2R | Jose Antonio Ribadeneira | 6-3 6-2 |
| W | 3R | Jose Carlos Portillo | 6-3 6-0 |
| W | QF | Alejandro Ochoa | 2-6 6-1 6-3 |
| W | SF | Emilio Camacho | 5-7 7-6 6-3 |
| L | F | Andres Delgadillo | 3-6 3-6 |
| L | 1R | Junxiong Dong | 6-4 4-6 0-6 |
| W | 1R | Jintao Lan | 6-4 6-2 |
| W | 2R | Xiuyuan Ye | 6-3 6-1 |
| W | QF | Zichen Shao | 4-6 7-6 6-1 |
| L | SF | Weiyi Kong | 4-6 2-6 |
| W | 1R | Nathan Mansfield | 6-3 5-7 6-0 |
| W | 2R | Luca Iacia Laurindo | 6-2 6-1 |
| L | QF | John Patrick Popowich | 0-6 0-6 |
| W | 1R | Rodolfo Hernandez Gil | 6-0 6-1 |
| L | 2R | Nathan Mansfield | 3-6 2-6 |
| W | 2R | Anirudh Nallaparaju | 6-3 7-6 |
| W | 3R | Jacob Kailiang Shen | 6-2 6-1 |
| L | QF | Lev Gorb | 5-7 4-6 |
| W | 2R | Chan Min | 4-6 6-1 7-5 |
| L | 3R | Finley Dyer | 5-7 1-6 |
| W | 2R | Bryan Dickson | 6-4 6-3 |
| W | 3R | Radu Cojocaru | 2-6 6-1 7-5 |
| W | QF | Eddie Biss | 6-2 3-6 6-3 |
| L | SF | Kanata Ozaki | 7-6 5-7 0-6 |
| W | 2R | Robert Dolya | 7-5 6-4 |
| W | 3R | Kunanan Pantaratorn | 6-7 6-4 6-1 |
| W | QF | Dai Khanh Nguyen | 6-1 6-2 |
| W | SF | Penn Charusorn | 2-6 6-4 6-3 |
| W | F | Kai-An Wu | 6-4 7-6 |
Junior Tennis Database is a site that summarizes the results of ITF junior tennis tournaments.
Number of registered tournaments: 5774, Number of registered players: 3,011, Number of registered results: 222,093