| Bonn Int. Women | 06/01 13:00 | - | Chua, Hui Zhen Grace v Xin Yee Ong | L | 1-2 | |
| Austrian Open Women Qual | 05/26 08:10 | - | Milena Schnider v Chua, Hui Zhen Grace | L | 2-0 | |
| Austrian Open Women Qual | 05/25 15:55 | - | Hrissha Dubey v Chua, Hui Zhen Grace | W | 0-2 | |
| Austrian Open Women Qual | 05/25 12:25 | - | Chua, Hui Zhen Grace v Rafaela M Solimano | W | 2-0 | |
| Singapore Open Women | 07/13 08:25 | 5 | Yi Man Zhang v Chua, Hui Zhen Grace | L | 2-0 | |
| Singapore Open 2019, WS, Qualification | 07/12 03:00 | - | Chua, Hui Zhen Grace v Repiska, Martina | - | Walkover | |
| Austrian Open Women | 05/28 16:20 | - | Wen Chi Hsu v Chua, Hui Zhen Grace | L | 2-0 | |
| Austrian Open Women | 05/28 08:40 | - | Sum Yee Yeung v Chua, Hui Zhen Grace | W | 0-2 | |
| Austrian Open Women | 05/27 11:40 | - | Aadya Variyath v Chua, Hui Zhen Grace | W | 0-2 | |
| Indonesia International Challenge 2019, WS | 10/23 08:40 | 5 | Chua, Hui Zhen Grace v Fatmawati, Sri Fatmawati | L | 1-2 | |
| Indonesia Masters Women | 10/02 03:10 | 5 | Saito, Shiori v Chua, Hui Zhen Grace | L | 2-0 | |
| Russia Open 2019, WS | 07/17 03:20 | 5 | Rituparna Das v Chua, Hui Zhen Grace | L | 2-0 | |
| White Nights Women | 07/12 10:30 | - | Kosetskaya, E. v Chua, Hui Zhen Grace | L | 2-0 | |
| White Nights Women | 07/11 11:30 | - | Chua, Hui Zhen Grace v Zaitsava, Alesia | W | 2-0 | |
| Malaysia Int. Women | 06/19 02:50 | - | Chua, Hui Zhen Grace v Syarafina, Desima Aqmar | W | 2-0 | |
| Singapore Open Women | 04/11 09:30 | 4 | Akane Yamaguchi v Chua, Hui Zhen Grace | L | 2-0 | |
| Singapore Open Women | 04/10 05:20 | 5 | Chua, Hui Zhen Grace v Disha Gupta | W | 2-0 | |
| Singapore Open 2019, WS, Qualification | 04/09 02:00 | - | Chua, Hui Zhen Grace v Khan Insyirah | W | 2-0 | |
| China Masters Women | 03/14 07:40 | 4 | Chua, Hui Zhen Grace v Jeon, Joo I | L | 0-2 | |
| China Masters Women | 03/13 10:00 | 5 | Chien Hui Yu v Chua, Hui Zhen Grace | W | 1-2 | |
| Giraldilla Int. XD | 02/21 06:50 | - | Chua, Hui Zhen Grace v Oie, Natsuki | L | 0-2 | |
| Giraldilla Int. XD | 02/20 06:40 | - | Chua, Hui Zhen Grace v Keerthi, Shruthi | W | 2-0 | |
| Open de Suisse - Doubles Femmes - Qualif. | 07/17 03:40 | - | Rituparna Das v Chua, Hui Zhen Grace | L | 2-1 | |
| Indonesia Masters XD | 04/25 09:20 | 5 | Chua, Hui Zhen Grace v Thi Trang Vu | L | 0-2 | |
| Open de Suisse - Doubles Femmes - Qualif. | 04/24 03:20 | 1 | Ng, Weng Chi v Chua, Hui Zhen Grace | W | 0-2 | |
| Giraldilla Int. XD | 02/22 13:30 | 1 | Chua, Hui Zhen Grace v Chaiwan, Pattarasuda | L | 0-2 | |
| Indonesia Masters XD | 01/17 09:00 | 5 | Carolina Marin v Chua, Hui Zhen Grace | L | 2-0 | |
| Open de Suisse - Doubles Femmes - Qualif. | 01/16 03:30 | 1 | Riodingin, Rusydina Antardayu v Chua, Hui Zhen Grace | W | 0-2 | |
| Giraldilla Int. XD | 01/10 05:00 | 5 | Yulia Y Susanto v Chua, Hui Zhen Grace | L | 2-1 | |
| Giraldilla Int. XD | 09/06 02:40 | 5 | Thuy Linh Nguyen v Chua, Hui Zhen Grace | L | 2-0 |