| Name | N. Kawaguchi |
| Country | Japan |
| DOB | 28.06.2002 |
| Season | Type | Rank | Titles | Won | Lost | Hard Won | Hard Lost | Clay Won | Clay Lost | Grass Won | Grass Lost |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | doubles | 239 | 1 | 24 | 17 | 23 | 15 | 1 | 2 | ||
| 2022 | doubles | 738 | 0 | 11 | 10 | 7 | 7 | 3 | 2 | 1 | 1 |
| 2021 | doubles | 1300 | 0 | 3 | 3 | 3 | 3 | ||||
| 2020 | doubles | 1096 | 0 | 0 | 1 | 0 | 1 | ||||
| 2019 | doubles | 1067 | 1 | 12 | 3 | 8 | 1 | 3 | 1 | 1 | 1 |
| 2023 | singles | 374 | 3 | 21 | 15 | 20 | 13 | 1 | 2 | ||
| 2022 | singles | 744 | 0 | 10 | 11 | 7 | 8 | 1 | 2 | 2 | 1 |
| 2021 | singles | 945 | 0 | 6 | 3 | 6 | 3 | 0 | 0 | ||
| 2019 | singles | 788 | 0 | 5 | 4 | 0 | 2 | 2 | 1 | 3 | 1 |
| 2018 | singles | 0 | 0 | 1 | 0 | 1 | |||||
| 2024 | doubles | 478 | 1 | 15 | 15 | 15 | 15 | ||||
| 2024 | singles | 673 | 0 | 10 | 13 | 10 | 13 | ||||
| 2025 | doubles | 291 | 3 | 38 | 18 | 38 | 18 | ||||
| 2025 | singles | 514 | 0 | 21 | 19 | 21 | 19 |
| Name | Season | Type | Surface | Prize |
|---|---|---|---|---|
| W25 Hamamatsu (ITF) | 2023 | doubles | hard | $25,000 |
| Australian Open | 2019 | doubles | hard | |
| W15 Nakhon Si Thammarat 5 (ITF) | 2024 | doubles | hard | $15,000 |
| W60 Fukuoka (ITF) | 2023 | singles | hard | $60,000 |
| W15 Osaka (ITF) | 2023 | singles | hard | $15,000 |
| W15 Hinode (ITF) | 2023 | singles | hard | $15,000 |
| W15 Singapore (ITF) | 2025 | doubles | hard (indoor) | $15,000 |
| W15 Yeongwol 2 (ITF) | 2025 | doubles | hard | $15,000 |
| W35 Brisbane 2 (ITF) | 2025 | doubles | hard | $30,000 |
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