| Vietnam Open | 2019/09/11 01:10 | Zulkarnain, I. v Verma, Siril | L | 0-2 |
| Hyderabad Open 2019, MS | 2019/08/10 09:30 | Verma, Sourabh v Zulkarnain, I. | L | 2-0 |
| Hyderabad Open 2019, MS | 2019/08/09 09:30 | Bai, Y. P. v Zulkarnain, I. | W | 1-2 |
| Hyderabad Open 2019, MS | 2019/08/08 08:45 | Zulkarnain, I. v Ikhsan L I Rumbay | W | 2-0 |
| Hyderabad Open 2019, MS | 2019/08/07 14:10 | Aryamann Tandon v Zulkarnain, I. | W | 1-2 |
| White Nights | 2019/07/14 08:30 | Siddharth Pratap Singh v Zulkarnain, I. | W | 0-2 |
| White Nights | 2019/07/13 13:30 | Kalle Koljonen v Zulkarnain, I. | W | 1-2 |
| White Nights | 2019/07/13 08:00 | Zulkarnain, I. v Misha Zilberman | W | 2-0 |
| Vietnam Open Qual | 2019/09/10 08:40 | Lei, L. X. v Yu, Sheng Po | L | 2-0 |
| Vietnam Open Qual | 2019/09/10 02:40 | Yu, Sheng Po v Mainaky, Yehezkiel Fritz | W | 2-0 |
| Chinese Taipei Open 2019, MS, Qualification | 2019/09/03 02:40 | Hsueh, H. Y. v Yu, Sheng Po | L | 2-1 |
| Akita Masters 2019, MS | 2019/08/14 02:50 | Takuma Obayashi v Yu, Sheng Po | L | 2-0 |
| Canada Open | 2019/07/04 22:30 | Yu, Sheng Po v Lucas Claerbout | L | 0-2 |
| Canada Open | 2019/07/03 18:30 | Lee, Dong Keun v Yu, Sheng Po | W | 0-2 |
| Canada Open | 2019/07/03 01:30 | Yu, Sheng Po v Vakili, Seyed Mohammad Hossein | W | 2-0 |
| Osaka Int. Qual | 2019/04/03 04:30 | Takuma Kawamoto v Yu, Sheng Po | L | 2-0 |