| WTT Star Contender Doha | 09/21 08:30 | - | Joao Geraldo v Sun, Chia-Hung | L | 3-0 | |
| WTT Star Contender Doha | 09/20 13:30 | - | Sun, Chia-Hung v Mohammad Hosseini | W | 3-0 | |
| Ligue des Champions | 10/30 18:00 | - | Sun, Chia-Hung v Anton Kallberg | L | 1-3 | |
| Tennis de table - Rencontres | 10/25 17:00 | - | Timo Boll v Sun, Chia-Hung | L | 3-0 | |
| Tennis de table - Rencontres | 10/18 19:00 | - | Quadri Aruna v Sun, Chia-Hung | L | 3-0 | |
| Tennis de table - Rencontres | 10/18 17:40 | - | Diogo Carvalho v Sun, Chia-Hung | W | 0-3 | |
| Tennis de table - Rencontres | 09/13 18:30 | - | Sun, Chia-Hung v Cedric Nuytinck | L | 0-3 | |
| Tennis de table - Rencontres | 09/13 16:30 | - | Sun, Chia-Hung v Shengpeng Fan | W | 3-2 | |
| ITTF China Open 2019, MS | 05/28 06:30 | - | Sun, Chia-Hung v Emmanuel Lebesson | L | 1-4 | |
| Qatar Open XD | 07/18 02:55 | 1 | Ng, Pak Nam v Sun, Chia-Hung | L | 4-3 | |
| Qatar Open XD | 07/17 02:12 | - | Ng, Pak Nam v Sun, Chia-Hung | L | 4-3 | |
| Qatar Open XD | 05/22 05:45 | 1 | Sun, Chia-Hung v Zhou, Yu | L | 0-4 | |
| Qatar Open XD | 04/04 12:45 | 1 | Sun, Chia-Hung v Jordy Piccolin | L | 0-4 | |
| Qatar Open XD | 03/21 15:40 | 1 | Persson, Jon v Sun, Chia-Hung | L | 4-1 | |
| Qatar Open XD | 01/18 13:40 | 5 | Sun, Chia-Hung v Hugo Calderano | L | 1-4 | |
| Qatar Open XD | 01/17 12:20 | 1 | Sun, Chia-Hung v Tromer, Laurens | W | 4-1 | |
| Qatar Open XD | 11/14 17:30 | - | Zhou, Yu v Sun, Chia-Hung | L | 4-0 | |
| Qatar Open XD | 11/13 14:20 | 1 | Sun, Chia-Hung v Truls Moregard | L | 1-4 | |
| Qatar Open XD | 11/01 09:00 | 1 | Sun, Chia-Hung v Hohmeier, Nils | W | 4-0 | |
| Qatar Open XD | 07/02 10:15 | 1 | Seo, Hyundeok v Sun, Chia-Hung | L | 4-0 | |
| Qatar Open XD | 07/02 07:34 | - | Jonghoon Lim v Sun, Chia-Hung | L | 3-1 | |
| Qatar Open XD | 07/02 05:00 | 1 | Zhang, Shaoping v Sun, Chia-Hung | W | 2-4 | |
| Qatar Open XD | 07/02 01:00 | 1 | Amor, Kelsey v Sun, Chia-Hung | W | 0-3 | |
| Qatar Open XD | 06/20 05:20 | 1 | Sun, Chia-Hung v Asuka Machi | L | 2-4 | |
| Qatar Open XD | 06/20 04:03 | - | Mizuki Oikawa v Sun, Chia-Hung | L | 3-0 | |
| Qatar Open XD | 06/20 01:51 | - | Aliaksandr Khanin v Sun, Chia-Hung | W | 1-3 | |
| Qatar Open XD | 06/14 06:18 | - | Tianming Zhao v Sun, Chia-Hung | W | 1-4 | |
| Qatar Open XD | 06/14 01:00 | 1 | Sun, Chia-Hung v Fumiya Igarashi | L | 1-3 | |
| Qatar Open 2019, MS | 04/14 03:45 | 1 | Sun, Chia-Hung v Zhendong Fan | L | 0-3 | |
| Qatar Open XD | 04/13 13:25 | 1 | Sun, Chia-Hung v Negara, Muhammad | W | 3-1 |