Name: Wai Yu Kai
Country: Hongkong
Birthdate: 20.03.01, 24 years
Matches total: 56
Win: 19
%: 33.93 %
Country: Hongkong
Birthdate: 20.03.01, 24 years
Matches total: 56
Win: 19
%: 33.93 %
| year | summary | Hard | Clay | I. hard | Carpet | Grass | Acrylic |
| 2024 | 0/2 | 0/2 | 0/0 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2023 | 8/9 | 8/8 | 0/1 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2020 | 1/8 | 1/7 | 0/0 | 0/1 | 0/0 | 0/0 | 0/0 |
| 2019 | 1/6 | 0/5 | 1/1 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2018 | 8/9 | 8/8 | 0/1 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2017 | 1/3 | 1/3 | 0/0 | 0/0 | 0/0 | 0/0 | 0/0 |
| TOTAL | 19/37 | 18/33 | 1/3 | 0/1 | 0/0 | 0/0 | 0/0 |
| perc. % | 33.93 % | 35.29 % | 25 % | 0 % | 0 % | 0 % | 0 % |
Wai Yu Kai / scheduled / last
| no matches found |
Wai Yu Kai form / surface: Hard
Wai Yu Kai / surface: Hard
| 23.06.24 | q 1 | Zijiang Yang | Wai Yu Kai | 4-0, Wai Yu Kai - retired |  | match details |  M15 Tianjin | Hard |
| 12.05.24 | q 1 | Qiulin Wang | Wai Yu Kai | 3-1, Wai Yu Kai - retired | | match details | M25 Luan | Hard |
| 18.09.23 | q 2 | Qiulin Wang | Wai Yu Kai | 7-5, 2-6, 11-9 | | match details | M25 Guiyang | Hard |
| 03.09.23 | q 1 | Weitao Xu | Wai Yu Kai | 5-2, Wai Yu Kai - retired | | match details |  M25 Hong | Hard |
| 27.08.23 | q 1 | Blake Mott | Wai Yu Kai | 6-2, 6-3 | | match details | M25 Hong | Hard |
| 16.08.23 | 1st round | Ye Cong Mo | Wai Yu Kai | 3-6, 6-4, 6-0 | | match details | M25 Yinchuan | Hard |
| 15.08.23 | qual. | Wai Yu Kai | Ye Hongyu | 6-3, 1-6, 11-9 |  | match details | ||
| 14.08.23 | q 2 | Wai Yu Kai | Antoine Berger | 3-6, 6-3, 10-5 | | match details | ||
| 13.08.23 | q 1 | Wai Yu Kai | Wenbo Bai | 6-2, 6-3 | | match details | ||
| 17.07.23 | q 2 | Mattias Southcombe | Wai Yu Kai | 6-71, 6-1, 10-4 | | match details | M25 Fuzhou | Hard |
| 16.07.23 | q 1 | Wai Yu Kai | David Kim | 6-0, 6-0 | | match details | ||
| 11.07.23 | qual. | Zhenxiong Dong | Wai Yu Kai | 7-61, 6-0 | | match details | M15 Shanghai | Hard |
| 10.07.23 | q 2 | Wai Yu Kai | Yutong Su | 6-1, 6-2 | | match details | ||
| 09.07.23 | q 1 | Wai Yu Kai | Ying-Ze Chen | 6-2, 6-4 | | match details | ||
| 03.07.23 | q 2 | Natthasith Kunsuwan | Wai Yu Kai | 6-2, 6-2 | | match details | M15 Tianjin | Hard |
| 02.07.23 | q 1 | Wai Yu Kai | Jianhao Sheng | 6-4, 6-4 | | match details | ||
| 12.06.23 | q 2 | Yanjie Zheng | Wai Yu Kai | 7-61, 4-6, 10-1 | | match details | M15 Tianjin | Hard |
| 11.06.23 | q 1 | Wai Yu Kai | Shaoyun Liu | 6-3, 6-2 | | match details | ||
| 25.02.20 | 1st round | Nino Ehrenschneider | Wai Yu Kai | 6-4, 6-1 | | match details |  M15 Monastir | Hard |
| 18.02.20 | 1st round | Quentin Folliot | Wai Yu Kai | 6-1, 6-1 | | match details | M15 Monastir | Hard |
| 10.02.20 | q 2 | Stefan Palosi | Wai Yu Kai | 6-4, 6-4 | | match details | M15 Monastir | Hard |
| 09.02.20 | q 1 | Wai Yu Kai | Jing Long Weng | 6-1, 6-2 | | match details | ||
| 05.02.20 | 1st round | Aziz Dougaz | Wai Yu Kai | 6-4, 6-1 | | match details | M15 Monastir | Hard |
| 29.01.20 | 1st round | Sebastian Baez | Wai Yu Kai | 6-2, 6-2 | | match details | M15 Monastir | Hard |
| 21.01.20 | 1st round | Zizou Bergs | Wai Yu Kai | 6-4, 6-2 | | match details | M15 Monastir | Hard |
| 08.01.20 | 1st round | Jumpei Yamasaki | Wai Yu Kai | 6-2, 6-1 | | match details | M15 Hong | Hard |
| 15.09.19 | Chun Hsin Tseng | Wai Yu Kai | 6-2, 7-5 | | match details | Davis Cup | Hard | |
| 17.06.19 | q 1 | Martin Borisiouk | Wai Yu Kai | 3-6, 7-5, 10-8 | | match details | M25 Hengyang | Hard |
| 12.06.19 | 1st round | Alexander Crnokrak | Wai Yu Kai | 6-3, 6-1 | | match details | M25 Hong | Hard |
| 04.06.19 | 1st round | Shuichi Sekiguchi | Wai Yu Kai | 6-2, 6-1 | | match details | M25 Hong | Hard |
| 29.04.19 | q 1 | Kosuke Ogura | Wai Yu Kai | 6-3, 6-4 | | match details | M15 Wuhan | Hard |
| 21.12.18 | q 1 | Xin Gao | Wai Yu Kai | 6-3, 6-2 | | match details | Hong Kong | Hard |
| 16.07.18 | 1st round | Lingxi Zhao | Wai Yu Kai | 6-2, 6-2 | | match details | China F11 | Hard |
| 15.07.18 | qual. | Wai Yu Kai | Xin Hu | 6-2, 6-1 | | match details | ||
| 14.07.18 | q 2 | Wai Yu Kai | Ruo Chen | 6-1, 6-2 | | match details | ||
| 13.07.18 | q 1 | Wai Yu Kai | Xiaoyu He | 6-2, 6-2 | | match details | ||
| 07.07.18 | q 1 | Weibowen Zou | Wai Yu Kai | 6-3, 7-63 | | match details | China F10 | Hard |
| 01.07.18 | q 2 | Bingyu Yu | Wai Yu Kai | 6-2, 6-1 | | match details | China F9 | Hard |
| 25.06.18 | 1st round | Hong Kit Wong | Wai Yu Kai | 6-4, 6-4 | | match details | Hong Kong | Hard |
| 24.06.18 | qual. | Wai Yu Kai | Alex Hunt | 6-2, 6-1 | | match details | ||
| 23.06.18 | q 1 | Wai Yu Kai | Sam Ryan Ziegann | 6-3, 6-3 | | match details | ||
| 07.05.18 | q 2 | Chukang Wang | Wai Yu Kai | 6-4, 6-3 | | match details | China F5 | Hard |
| 05.05.18 | q 1 | Wai Yu Kai | Chuanqi Su | 6-1, 6-0 | | match details | ||
| 29.04.18 | q 2 | Chase Ferguson | Wai Yu Kai | 7-64, 6-3 | | match details | China F4 | Hard |
| 28.04.18 | q 1 | Wai Yu Kai | Winter Meagher | 6-1, 2-6, 6-4 | | match details | ||
| 31.12.17 | qual. | Jack Murray | Wai Yu Kai | 6-0, 6-2 | | match details | Hong Kong | Hard |
| 30.12.17 | q 1 | Wai Yu Kai | Tomohiro Masabayashi | 3-6, 6-3, 6-3 | | match details | ||
| 23.12.17 | q 1 | Takashi Saito | Wai Yu Kai | 6-1, 6-0 | | match details | Hong Kong | Hard |
| 18.12.17 | q 1 | Huixin Wang | Wai Yu Kai | 6-0, 6-0 | | match details | Hong Kong | Hard |
| 29.05.17 | q 1 | Wai Yu Kai | Jeffrey Smallwood | 6-0, 6-3 | | match details | China F9 | Hard |
| 29.05.17 | q 2 | Zhao-Tai Li | Wai Yu Kai | 6-3, 6-2 | | match details |
