Lulu Sun
2019
| AUSTRALIAN OPEN JUNIOR | [7] | Quarter |
| J1 TRARALGON | [6] | 1R |
2018
| J1 BRADENTONFL | [8] | Quarter |
| J1 CAMPECHE | [2] | Semi |
| J2 LIMA | [1] | Win |
| US OPEN JUNIOR | 1R | |
| J1 REPENTIGNY | [9] | 2R |
| J1 NANJING | [2] | Semi |
| WIMBLEDON JUNIOR | 2R | |
| J1 ROEHAMPTON | 1R | |
| ROLAND GARROS JUNIOR | [14] | 2R |
| J1 SANTACROCE | [1] | 3R |
| J1 SARAWAK | [2] | Quarter |
| J1 NONTHABURI | [1] | 3R |
| AUSTRALIAN OPEN JUNIOR | [10] | 3R |
| J1 TRARALGON | [9] | Quarter |
2017
| J1 BRADENTONFL | [3] | 1R |
| J1 MERIDA | [2] | 1R |
| J2 TINHAUHONGKONG | [2] | Semi |
| J2 NAGOYA | [2] | Win |
| J500OSAKA | [9] | Quarter |
| US OPEN JUNIOR | 2R | |
| J1 REPENTIGNY | [13] | 3R |
| J1 COLLEGEPARKMD | Quarter | |
| WIMBLEDON JUNIOR | 1R | |
| J1 ROEHAMPTON | 1R | |
| J1 CHARLEROI-MARCINELLE | [11] | Final |
| J1 SANTACROCE | [12] | 2R |
| J1 CASABLANCA | [7] | Quarter |
| J3 TLEMCEN | [1] | Final |
| J3 TUNIS | [2] | Win |
| J1 LAMBARE | [8] | 1R |
| J1 SANJOSE | [9] | 3R |
2016
| J500OSAKA | [16] | 1R |
Nation
SUI
Age
25 years old (born in 2001)
World Ranking
WTA Ranking 109th
Year-end Junior World Ranking
- Year-end 2019 304th
- Year-end 2018 25th
Rival
naho sato (2-2)
hurricane tyra black (0-2)
hong yi cody wong (1-1)
yuki naito (1-1)
stefania rogozinska dzik (1-1)
Match Details
AUSTRALIAN OPEN JUNIOR
| W | 1R | Caijsa Wilda Hennemann | 6-4 6-3 |
| W | 2R | Amber Marshall | 6-4 6-0 |
| W | 3R | Federica Rossi | 4-6 6-2 6-4 |
| L | QF | Anastasia Tikhonova | 6-7 6-4 4-6 |
J1 TRARALGON
| L | 1R | Viktoryia Kanapatskaya | 6-1 3-6 2-6 |
J1 BRADENTONFL
| W | 1R | Natasha Subhash | 6-2 6-3 |
| W | 2R | Dana Guzman | 6-1 6-1 |
| W | 3R | Kylie Collins | 6-3 6-3 |
| L | QF | Qinwen Zheng | 2-6 0-6 |
J1 CAMPECHE
| W | 1R | Ziva Falkner | 6-1 6-1 |
| W | 2R | Charlotte Chavatipon | 6-2 6-2 |
| W | 3R | Maria Fernanda Campos | 7-5 6-1 |
| W | QF | Marta Custic | 7-6 6-3 |
| L | SF | Hurricane Tyra Black | 4-6 3-6 |
J2 LIMA
| W | 2R | Daniela Ramos | - - - |
| W | 3R | Guillermina Grant | 6-3 6-0 |
| W | QF | Romina Ccuno | 6-2 6-0 |
| W | SF | Ana Luiza Cruz | 6-2 2-6 6-4 |
| W | F | Viktoriya Petrenko | 6-0 6-2 |
US OPEN JUNIOR
| L | 1R | Cori Gauff | 5-7 3-6 |
J1 REPENTIGNY
| L | 2R | Daria Frayman | 3-6 3-6 |
J1 NANJING
| W | 2R | Justine Leong | 6-1 6-1 |
| W | 3R | Punnin Kovapitukted | 6-2 6-4 |
| W | QF | Jiaqi Wang | 6-2 3-6 6-3 |
| L | SF | Hong Yi Cody Wong | 1-6 4-6 |
WIMBLEDON JUNIOR
| W | 1R | Marta Custic | 6-1 6-3 |
| L | 2R | Xinyu Wang | 6-7 3-6 |
J1 ROEHAMPTON
| L | 1R | Sasha Hill | 4-6 3-6 |
ROLAND GARROS JUNIOR
| W | 1R | Ana Paula Melilo | 7-5 6-1 |
| L | 2R | Caty Mcnally | 7-6 1-6 6-7 |
J1 SANTACROCE
| W | 2R | Mihaela Lorena Marculescu | 7-5 6-1 |
| L | 3R | Stefania Rogozinska Dzik | 6-7 2-6 |
J1 SARAWAK
| W | 2R | Joleta Budiman | 6-0 6-1 |
| W | 3R | Hong Yi Cody Wong | 6-2 6-1 |
| L | QF | Yuki Naito | 2-6 4-6 |
J1 NONTHABURI
| W | 2R | Natasha Sengphrachanh | 6-1 6-1 |
| L | 3R | Hurricane Tyra Black | 1-6 3-6 |
AUSTRALIAN OPEN JUNIOR
| W | 1R | Draginja Vukovic | 6-4 6-3 |
| W | 2R | Nicole Mossmer | 6-2 6-2 |
| L | 3R | Naho Sato | 6-7 7-6 1-6 |
J1 TRARALGON
| W | 1R | Himari Sato | 6-7 7-5 6-4 |
| W | 2R | Stefania Rogozinska Dzik | 6-3 6-0 |
| W | 3R | Megan Smith | 6-1 6-3 |
| L | QF | En Shuo Liang | 4-6 3-6 |
J1 BRADENTONFL
| L | 1R | Chloe Beck | 6-7 5-7 |
J1 MERIDA
| L | 1R | Andreea Prisacariu | 3-6 7-5 1-6 |
J2 TINHAUHONGKONG
| W | 1R | Janice Tjen | 6-0 6-1 |
| W | 2R | Zara Brankovic | 6-7 6-3 6-1 |
| W | QF | Mai Napatt Nirundorn | 6-2 6-3 |
| L | SF | Thasaporn Naklo | 4-6 3-6 |
J2 NAGOYA
| W | 2R | Shiho Tsukuda | 6-1 6-3 |
| W | 3R | Rina Saigo | 6-3 6-4 |
| W | QF | Anri Nagata | 6-4 7-5 |
| W | SF | Oona Orpana | 7-6 6-3 |
| W | F | Yuki Naito | 6-3 3-6 6-4 |
J500OSAKA
| W | 1R | 福徳里彩 | 6-0 6-2 |
| W | 2R | Hina Inoue | 6-2 6-0 |
| W | 3R | Pei Hsuan Chen | 6-4 6-3 |
| L | QF | Xinyu Wang | 3-6 3-6 |
US OPEN JUNIOR
J1 REPENTIGNY
| W | 2R | Sarah-Maude Fortin | 4-6 6-2 6-2 |
| L | 3R | Marta Kostyuk | 2-6 6-3 3-6 |
J1 COLLEGEPARKMD
| W | 1R | Elysia Bolton | 7-6 6-1 |
| W | 2R | Naho Sato | 3-6 6-2 6-2 |
| W | 3R | Peyton Stearns | 6-2 6-4 |
| L | QF | Elena Rybakina | 0-6 1-6 |
WIMBLEDON JUNIOR
| L | 1R | Kayla Day | 5-7 4-6 |
J1 ROEHAMPTON
| L | 1R | Sofya Lansere | 4-6 1-6 |
J1 CHARLEROI-MARCINELLE
| W | 2R | Anna Hertel | 6-0 7-5 |
| W | 3R | Thaisa Grana Pedretti | 4-6 7-6 7-5 |
| W | QF | Axana Mareen | 6-2 6-4 |
| W | SF | Naho Sato | 6-4 6-1 |
| L | F | Anhzelika Isaeva | 4-6 5-7 |
J1 SANTACROCE
| L | 2R | Jule Niemeier | 4-6 3-6 |
J1 CASABLANCA
| W | 2R | Salma Ziouti | 6-0 6-3 |
| W | 3R | Lea Ma | 6-1 6-1 |
| L | QF | Yasmine Mansouri | 2-6 0-6 |
J3 TLEMCEN
| W | 2R | Salma Ziouti | 7-6 6-2 |
| W | QF | Sofya Treshcheva | 6-2 6-3 |
| W | SF | Melania Delai | - - - |
| L | F | Lexie Stevens | 5-7 5-7 |
J3 TUNIS
| W | 1R | Hadir Kilani | 6-1 6-0 |
| W | 2R | Ksenia Domnina | 6-1 6-2 |
| W | QF | Adithya Karunaratne | 6-1 6-0 |
| W | SF | Sofya Treshcheva | 2-6 6-2 6-0 |
| W | F | Mihika Yadav | 6-2 6-0 |
J1 LAMBARE
| L | 1R | Giulia Morlet | 5-7 4-6 |
J1 SANJOSE
| W | 1R | Jordan Harris | 6-2 6-2 |
| W | 2R | Kianah Motosono | 7-6 6-3 |
| L | 3R | Nicole Mossmer | 1-6 1-6 |
J500OSAKA
| L | 1R | Natsumi Kawaguchi | 6-7 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