| Giraldilla Int. - Mixed dubbel | 2019/02/15 17:30 | Toma Junior Popov v Mark Caljouw | L | 0-2 |
| Indonesia Masters - Mixed dubbel | 2017/11/23 13:40 | Mark Caljouw v Toma Junior Popov | L | 2-0 |
| SaarLorLux Open | 2020/10/31 15:00 | Toma Junior Popov v Ditlev Jaeger Holm | W | 2-0 |
| SaarLorLux Open | 2020/10/30 15:30 | Max Weisskirchen v Toma Junior Popov | W | 1-2 |
| SaarLorLux Open | 2020/10/29 15:45 | Toma Junior Popov v Thomas Rouxel | W | 2-0 |
| SaarLorLux Open | 2020/10/28 09:00 | Hans-Kristian Vittinghus v Toma Junior Popov | W | 0-2 |
| SaarLorLux Open | 2020/10/27 09:00 | Joran Kweekel v Toma Junior Popov | W | 0-2 |
| Denmark Open | 2020/10/15 11:30 | Toma Junior Popov v Jan O Jorgensen | L | 1-2 |
| Denmark Open | 2020/10/14 12:40 | Toma Junior Popov v B.R. Sankeerth | W | 2-0 |
| Spain Masters | 2020/02/20 09:40 | Thomas Rouxel v Toma Junior Popov | L | 2-1 |
| SaarLorLux Open | 2020/10/31 15:15 | Mark Caljouw v Brian Yang | W | 2-0 |
| SaarLorLux Open | 2020/10/30 14:45 | Ivan Rusev v Mark Caljouw | W | 0-2 |
| SaarLorLux Open | 2020/10/29 15:00 | Nhat Nguyen v Mark Caljouw | W | 1-2 |
| Denmark Open | 2020/10/15 16:00 | Rasmus Gemke v Mark Caljouw | L | 2-1 |
| Denmark Open | 2020/10/13 14:40 | Mark Caljouw v Kalle Koljonen | W | 2-1 |
| All England Open | 2020/03/11 13:05 | Tien Chen Chou v Mark Caljouw | L | 2-0 |
| European Team Championships | 2020/02/16 13:00 | Viktor Axelsen v Mark Caljouw | L | 2-0 |
| European Team Championships | 2020/02/15 15:00 | Brice Leverdez v Mark Caljouw | W | 1-2 |