| Giraldilla Int. XD | 2018/03/16 12:00 | Mendrek, Adam v Nikolov, Daniel | W | 0-2 |
| Dutch Open (GP) 2017, Qualification | 2019/10/08 08:00 | Nikolov, Daniel v Karan Rajan Rajarajan | W | 2-0 |
| Polish Int. | 2019/09/21 10:40 | Nikolov, Daniel v Mads Christophersen | L | 1-2 |
| Polish Int. | 2019/09/20 13:40 | Nikolov, Daniel v Dubowski, Mateusz | W | 2-1 |
| Bulgarian Open | 2019/08/13 07:30 | Joran Kweekel v Nikolov, Daniel | L | 2-0 |
| European Games | 2019/06/25 10:15 | Luka Wraber v Nikolov, Daniel | L | 2-1 |
| Orléans Masters | 2019/03/20 16:50 | Nikolov, Daniel v Toma Junior Popov | L | 0-2 |
| Orleans Masters Qual | 2019/03/19 08:35 | Qowimuramadhoni, Azmy v Nikolov, Daniel | W | 0-2 |
| Open de Suisse - Doubles Femmes - Qualif. | 2019/02/20 10:30 | Max Weisskirchen v Nikolov, Daniel | W | 1-2 |
| World Championships | 2019/08/19 16:10 | Burestedt, Felix v Mendrek, Adam | L | 2-0 |
| Bulgarian Open | 2019/08/13 15:30 | Mendrek, Adam v Christensen, Jeppe Bruun | L | 0-2 |
| Hellas Open | 2019/08/09 07:10 | Mendrek, Adam v Mads Christophersen | L | 0-2 |
| Azerbaïdjan Int. - Qualif. | 2019/06/06 10:00 | Gunnarsson, Kari v Mendrek, Adam | W | 0-2 |
| Jamaica Int. | 2019/03/08 21:00 | Mendrek, Adam v Job Castillo | L | 1-2 |
| Giraldilla Int. XD | 2018/12/19 19:55 | Hsu, Jen Hao v Mendrek, Adam | L | 2-0 |
| Giraldilla Int. XD | 2018/12/18 23:09 | Tamang, Ratnajit v Mendrek, Adam | W | 0-2 |
| Giraldilla Int. XD | 2018/12/18 22:00 | Tamang, Ratnajit v Mendrek, Adam | W | 0-2 |