Natsumi Kawaguchi
2019
| Us Open Junior | [6] | 1R |
| Wimbledon Junior | [6] | Quarter |
| Roland Garros Junior | [7] | 3R |
| Australian Open Junior | 1R |
Nation
JPN
Age
22 years old (born in 2002)
World Ranking
WTA Ranking　612th
Year-end Junior World Ranking
- Year-end 2020 42th
- Year-end 2019 6th
- Year-end 2018 49th
Match Details
2019 Us Open Junior
| L | 1R | Joanna Garland | 4-6 6-1 3-6 |
2019 Wimbledon Junior
| W | 1R | Alexandra Vecic | 6-1 5-7 6-4 |
| W | 2R | Martyna Kubka | 6-1 7-6 |
| W | 3R | Elizabeth Mandlik | WO |
| L | QF | Emma Navarro | 6-4 1-6 1-6 |
2019 Roland Garros Junior
| W | 1R | Abigail Forbes | 6-3 5-7 6-3 |
| W | 2R | Mylene Halemai | 6-4 6-3 |
| L | 3R | Alina Charaeva | 3-6 2-6 |
2019 Australian Open Junior
| L | 1R | Daria Frayman | 5-7 6-4 5-7 |
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