Natsumi Kawaguchi
2019
| JAOSAKA | [2] | 3R |
| US OPEN JUNIOR | [6] | 1R |
| J1 REPENTIGNY | [1] | 3R |
| WIMBLEDON JUNIOR | [6] | Quarter |
| J1 ROEHAMPTON | [4] | Quarter |
| J1 NOTTINGHAM | [1] | 2R |
| ROLAND GARROS JUNIOR | [7] | 3R |
| JAMILAN | [4] | 2R |
| JAPORTOALEGRE | [4] | Final |
| AUSTRALIAN OPEN JUNIOR | 1R | |
| J1 TRARALGON | 2R |
2018
| J1 BRADENTONFL | 1R | |
| J1 CAMPECHE | [11] | 2R |
| J2 NAGOYA | [4] | 3R |
| J500OSAKA | [12] | 3R |
| J3 CALI | [3] | 3R |
| J3 VANCOUVER | [1] | Quarter |
| J1 CHARLEROI-MARCINELLE | 1R | |
| J3 MENDOZA | [1] | Win |
| J3 SANJOSE | [3] | 1R |
| J1 CUENCA | [13] | Semi |
| J1 BARRANQUILLA | Quarter | |
| J1 SANJOSE | 1R |
2017
| J1 MERIDA | 1R | |
| J2 LIMA | 1R | |
| J2 MONTEVIDEO | 1R | |
| J2 OBERENTFELDEN | 1R | |
| J3 LVIV | [6] | 1R |
| J2 PLZEN | 2R | |
| J1 CARSON | 1R | |
| J3 SANJOSE | [7] | 2R |
| J3 MENDOZA | [8] | 3R |
2016
| J500OSAKA | 3R |
Nation
JPN
Age
23 years old (born in 2002)
World Ranking
WTA Ranking　432th
Year-end Junior World Ranking
- Year-end 2020 42th
- Year-end 2019 6th
- Year-end 2018 49th
Match Details
JAOSAKA
| W | 1R | Jennifer Kida | 6-2 6-3 |
| W | 2R | Carol Young Suh Lee | 6-1 6-3 |
| L | 3R | Mara Guth | 1-6 3-6 |
US OPEN JUNIOR
| L | 1R | Joanna Garland | 4-6 6-1 3-6 |
J1 REPENTIGNY
| W | 2R | Aubane Droguet | 7-5 6-4 |
| L | 3R | Ariana Arseneault | 4-6 6-7 |
WIMBLEDON JUNIOR
| W | 1R | Alexandra Vecic | 6-1 5-7 6-4 |
| W | 2R | Martyna Kubka | 6-1 7-6 |
| W | 3R | Elizabeth Mandlik | 3-6 6-4 |
| L | QF | Emma Navarro | 6-4 1-6 1-6 |
J1 ROEHAMPTON
| W | 1R | Oksana Selekhmeteva | 6-1 6-3 |
| W | 2R | Savannah Broadus | 3-6 7-6 6-0 |
| W | 3R | Emma Raducanu | 6-2 3-1 |
| L | QF | Alexa Noel | 6-3 4-6 5-7 |
J1 NOTTINGHAM
| L | 2R | Martyna Kubka | 4-6 6-2 6-7 |
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 |
JAMILAN
| W | 1R | Viktoriya Petrenko | 6-0 6-4 |
| L | 2R | Charlotte Owensby | 4-6 5-7 |
JAPORTOALEGRE
| W | 1R | Isadora Walber Machado | 6-1 6-0 |
| W | 2R | Galateia Mesochoritou | 6-4 7-6 |
| W | 3R | Alexandra Vagramov | 6-0 6-2 |
| W | QF | Julie Belgraver | 6-2 6-3 |
| W | SF | Alexa Noel | 6-1 7-5 |
| L | F | Ane Mintegi Del Olmo | 2-6 6-4 2-6 |
AUSTRALIAN OPEN JUNIOR
| L | 1R | Daria Frayman | 5-7 6-4 5-7 |
J1 TRARALGON
| W | 1R | Daria Frayman | 6-3 6-0 |
| L | 2R | Emma Raducanu | 4-6 4-6 |
J1 BRADENTONFL
| L | 1R | Elizabeth Mandlik | 3-6 4-6 |
J1 CAMPECHE
| W | 1R | Raffaela Alhach | 6-0 6-4 |
| L | 2R | Hibah Shaikh | 4-6 6-2 5-7 |
J2 NAGOYA
| W | 2R | Hikaru Yoshikawa | 6-0 7-6 |
| L | 3R | Anastasia Berezov | 6-4 5-7 5-7 |
J500OSAKA
| W | 1R | Nanari Katsumi | 6-3 6-2 |
| W | 2R | Shiori Ito | 6-4 6-4 |
| L | 3R | Daria Snigur | 1-6 2-6 |
J3 CALI
| W | 2R | Lizette Reding | 6-0 6-1 |
| L | 3R | Mell Elizabeth Reasco Gonzalez | 7-6 6-7 5-7 |
J3 VANCOUVER
| W | 1R | Stefanie Frias Da Silva | 7-5 6-0 |
| W | 2R | Anika Yarlagadda | 6-4 3-6 6-3 |
| L | QF | Hibah Shaikh | 6-4 4-6 3-6 |
J1 CHARLEROI-MARCINELLE
| L | 1R | Eva Lys | 1-6 3-6 |
J3 MENDOZA
| W | 2R | Lara Rosario De Faveri | 6-1 6-0 |
| W | 3R | Julia Riera | 2-6 6-2 6-1 |
| W | QF | Francisca Vergara | 6-2 6-1 |
| W | SF | Maia Guillermina Haumuller | 6-2 2-6 6-4 |
| W | F | Ana Luiza Cruz | 6-3 6-2 |
J3 SANJOSE
| L | 1R | Kailey Evans | 6-2 4-6 3-6 |
J1 CUENCA
| W | 2R | Andrea Brazyte | 6-0 6-1 |
| W | 3R | Laura Sofia Rico Garcia | 6-3 6-2 |
| W | QF | Rut Galindo | 4-6 6-1 6-3 |
| L | SF | Gabriella Price | 2-6 3-6 |
J1 BARRANQUILLA
| W | 1R | Maria Judith Castillo Cajamarca | 6-0 6-0 |
| W | 2R | Sabina Dadaciu | 6-7 1-0 |
| W | 3R | Maia Guillermina Haumuller | 6-2 6-1 |
| L | QF | Camila Osorio | 2-6 6-7 |
J1 SANJOSE
| L | 1R | Kennedy Bridgforth | 4-6 1-6 |
J1 MERIDA
| L | 1R | Alexandra Yepifanova | 6-2 6-7 2-6 |
J2 LIMA
| L | 1R | Kianah Motosono | 6-3 5-7 4-6 |
J2 MONTEVIDEO
| L | 1R | Georgia Drummy | 6-4 3-6 4-6 |
J2 OBERENTFELDEN
| L | 1R | Fernanda Labrana | 3-6 3-6 |
J3 LVIV
| L | 1R | Oleksandra Balaba | 3-6 3-6 |
J2 PLZEN
| W | 1R | Romana Cisovska | 6-2 3-6 6-2 |
| L | 2R | Nika Radisic | 3-6 3-6 |
J1 CARSON
| L | 1R | Carolyn Campana | 6-2 4-6 3-6 |
J3 SANJOSE
| W | 1R | Tania Lea Aizenman Sanchez | 7-6 6-3 |
| L | 2R | Fanni Gecsek | 5-7 6-4 2-6 |
J3 MENDOZA
| W | 2R | Agustina Cuestas | 6-0 6-2 |
| L | 3R | Shelly Yaloz | 5-7 3-6 |
J500OSAKA
| W | 1R | Lulu Sun | 7-6 6-3 |
| W | 2R | Rika Tanaka | 6-3 6-2 |
| L | 3R | Xiyu Wang | 4-6 6-1 3-6 |
Junior Tennis Database is a site that summarizes the results of ITF junior tennis tournaments.
Number of registered tournaments: 14431, Number of registered players: 7,550, Number of registered results: 449,006