| Japan Open | 2019/07/23 05:20 | Anthony Sinisuka Ginting v Lu, G. Z. | L | 2-0 |
| Indonesia Open | 2019/07/16 09:15 | Anthony Sinisuka Ginting v Lu, G. Z. | L | 2-1 |
| Australian Open | 2019/06/04 23:40 | Jonatan Christie v Lu, G. Z. | L | 2-0 |
| New Zealand Open 2019, MS | 2019/05/01 07:20 | Lu, G. Z. v Tommy Sugiarto | L | 0-2 |
| Asia Championships | 2019/04/26 09:00 | Kento Momota v Lu, G. Z. | L | 2-1 |
| Asia Championships | 2019/04/25 02:00 | Tommy Sugiarto v Lu, G. Z. | W | 0-2 |
| Asia Championships | 2019/04/24 07:20 | Phetpradab, Khosit v Lu, G. Z. | W | 0-2 |
| Singapore Open | 2019/04/11 08:00 | Sameer Verma v Lu, G. Z. | L | 2-0 |
| US Open 2019, MS | 2019/07/10 23:30 | Kai Schaefer v Xiaodong Sheng | L | 0-2 |
| Canada Open | 2019/07/03 20:20 | Kai Schaefer v Lucas Claerbout | L | 0-2 |
| Spanish Int. | 2019/06/14 08:00 | Kai Schaefer v Toby Penty | L | 0-2 |
| Spanish Int. | 2019/06/13 12:45 | Luis Enrique Penalver v Kai Schaefer | W | 0-2 |
| Azerbaïdjan Int. | 2019/06/08 14:00 | Rasmus Gemke v Kai Schaefer | L | 2-1 |
| Azerbaïdjan Int. | 2019/06/08 07:30 | Luis Enrique Penalver v Kai Schaefer | W | 0-2 |
| Azerbaïdjan Int. | 2019/06/07 12:00 | Goh, Giap Chin v Kai Schaefer | W | 1-2 |
| Sudirman Cup | 2019/05/22 04:00 | Kai Schaefer v Ho-Shue, Jason Anthony | W | 1-0 |