Mei Hasegawa
2021
| Jamilan-2 | 1R | |
| Thejuniorchampionships | 1R | |
| Wimbledon Junior | 1R | |
| Roland Garros Junior | 1R | |
| J3Lousada-2 | [2] | 2R |
| J3Lousada | [2] | 1R |
| Jacriciuma | [8] | 1R |
| J1Portoalegre | [8] | 2R |
| J1Lambare | Quarter | |
| J1Salinas | Quarter |
2019
| China Junior 14 | 1R | |
| China Junior 7 | [8] | 3R |
| China Junior 4 | 2R | |
| China Junior 3 | [10] | 3R |
Age
22 years old (born in 2003)
World Ranking
WTA Ranking　1384th
Year-end Junior World Ranking
- Year-end 2021 126th
- Year-end 2020 109th
- Year-end 2019 282th
- Year-end 2018 501th
Match Details
2021 Jamilan-2
| L | 1R | Diana Shnaider | 2-6 5-7 |
2021 Thejuniorchampionships
| L | 1R | Julia Middendorf | 5-7 2-6 |
2021 Wimbledon Junior
| L | 1R | Julia Middendorf | 5-7 2-6 |
2021 Roland Garros Junior
| L | 1R | Ekaterina Maklakova | 6-2 1-6 2-6 |
2021 J3Lousada-2
| W | 1R | Jade Marie | 6-4 5-7 6-2 |
| L | 2R | Nina Vargova | 2-6 7-5 1-6 |
2021 J3Lousada
| L | 1R | Anita Sahdiieva | 1-6 1-6 |
2021 Jacriciuma
| L | 1R | Clervie Ngounoue | 3-6 2-6 |
2021 J1Portoalegre
| W | 1R | Rebecca Lynn | 6-0 6-4 |
| L | 2R | Solana Sierra | 3-6 3-6 |
2021 J1Lambare
| W | 1R | Paulina Franco Martinessi | 6-2 6-2 |
| W | 2R | Madison Sieg | 6-4 6-4 |
| L | QF | Radka Zelnickova | 3-6 0-6 |
2021 J1Salinas
| W | 1R | Anaelle Leclercq | 6-3 6-1 |
| W | 2R | Qavia Lopez | 7-6 6-2 |
| L | QF | Natalia Szabanin | 4-6 4-6 |
2019 China Junior 14
| L | 1R | Jiayu Xu | 2-6 0-6 |
2019 China Junior 7
| W | 1R | Yuxuan Li | 6-4 6-2 |
| W | 2R | Yizhen Zheng | 6-2 7-6 |
| L | 3R | Xichen Zhao | 3-6 1-6 |
2019 China Junior 4
| W | 1R | Mingqiao Yang | 6-2 3-6 6-0 |
| L | 2R | Supapitch Kuearum | 1-6 2-6 |
2019 China Junior 3
| W | 1R | Yuxuan Li | 6-2 6-3 |
| W | 2R | Yile Cheng | 6-0 6-3 |
| L | 3R | Mingqiao Yang | 4-6 6-2 3-6 |
Junior Tennis Database is a site that summarizes the results of ITF junior tennis tournaments.
Number of registered tournaments: 9232, Number of registered players: 5,739, Number of registered results: 303,671