Ryotaro Koshiba
Nation
JPN
Age
23 years old (born in 2002)
Year-end Junior World Ranking
- Year-end 2020 1139th
- Year-end 2019 1500th
- Year-end 2018 1024th
Match Details
2020 J3 SAITAMA
| W | 1R | Prachaya Baibong | 6-1 6-3 |
| L | 2R | Reiya Komagata | 2-6 2-6 |
2019 AI SUGIYAMA CUP
| W | 1R | Sohma Nakagomi | 4-6 7-6 6-4 |
| W | 2R | Taiyo Kurata | 6-4 2-6 6-4 |
| L | QF | Taiyo Uenoyama | 1-6 2-6 |
2019 CHINA JUNIOR 2
| W | 1R | Zhipeng Song | 6-3 6-2 |
| L | 2R | Qian Sun | 4-6 0-6 |
Junior Tennis Database is a site that summarizes the results of ITF junior tennis tournaments.
Number of registered tournaments: 10179, Number of registered players: 6,443, Number of registered results: 375,166