| Malaysia Masters | 07/07 06:40 | 4 | Mark Caljouw v Ka Long Angus NG | L | 0-2 | |
| Malaysia Masters | 07/06 04:40 | 5 | Mark Caljouw v Kwang Hee Heo | W | 2-0 | |
| Malaysia Open | 06/29 06:00 | 5 | Ka Long Angus NG v Mark Caljouw | L | 2-0 | |
| Indonesia Open | 06/15 05:20 | 5 | Mark Caljouw v Jun Peng Zhao | L | 0-2 | |
| Indonesia Masters | 06/09 05:30 | - | Zii Jia Lee v Mark Caljouw | L | 2-0 | |
| Indonesia Masters | 06/08 06:20 | - | Fei Xiang Sun v Mark Caljouw | W | 0-2 | |
| European Championships | 04/27 10:20 | - | Mark Caljouw v Misha Zilberman | L | 1-2 | |
| European Championships | 04/26 10:20 | - | Mark Caljouw v Kalle Koljonen | W | 2-1 | |
| Orleans Masters | 03/30 14:00 | - | Kiran George v Mark Caljouw | L | 2-1 | |
| Swiss Open | 03/24 12:00 | - | Toma Junior Popov v Mark Caljouw | L | 2-0 | |
| Swiss Open | 03/23 08:50 | - | Mark Caljouw v Felix Burestedt | W | 2-1 | |
| All England Open | 03/17 12:10 | 4 | Viktor Axelsen v Mark Caljouw | L | 2-0 | |
| All England Open | 03/16 11:05 | 5 | Mark Caljouw v Sameer Verma | W | 2-0 | |
| German Open | 03/09 08:20 | 5 | Mark Caljouw v Zii Jia Lee | L | 1-2 | |
| World Championships | 12/17 09:30 | - | Srikanth Kidambi v Mark Caljouw | L | 2-0 | |
| World Championships | 12/16 12:00 | - | Brian Yang v Mark Caljouw | W | 0-2 | |
| World Championships | 12/14 09:00 | 6 | Mark Caljouw v Kalle Koljonen | W | 2-1 | |
| World Championships | 12/12 15:00 | 6 | Sai Praneeth B. v Mark Caljouw | W | 1-2 | |
| French Open | 10/26 13:50 | 5 | Ka Long Angus NG v Mark Caljouw | - | Retired | |
| Olympics 2020 - Men | 07/29 08:45 | 4 | Kevin Cordon v Mark Caljouw | L | 2-1 | |
| Olympics 2020 - Men | 07/28 09:00 | 1 | Sai Praneeth B. v Mark Caljouw | W | 0-2 | |
| Olympics 2020 - Men | 07/26 02:20 | 1 | Mark Caljouw v Misha Zilberman | W | 2-1 | |
| European Championships | 04/30 15:20 | 3 | Mark Caljouw v Hans-Kristian Vittinghus | L | 1-2 | |
| European Championships | 04/29 09:00 | 4 | Felix Burestedt v Mark Caljouw | W | 1-2 | |
| European Championships | 04/28 11:00 | 1 | Luka Wraber v Mark Caljouw | W | 0-2 | |
| Orleans Masters | 03/23 17:50 | 6 | Mark Caljouw v Kiran George | L | 1-2 | |
| All England Open | 03/20 12:20 | 2 | Zii Jia Lee v Mark Caljouw | L | 2-0 | |
| All England Open | 03/19 10:40 | 3 | Lakshya Sen v Mark Caljouw | W | 1-2 | |
| All England Open | 03/18 10:40 | 4 | Nhat Nguyen v Mark Caljouw | W | 0-2 | |
| All England Open | 03/17 14:30 | 5 | Mark Caljouw v Khosit Phetpradab | W | 2-0 |