| Qatar Open 2019, MS | 2016/10/07 16:54 | Hugo Calderano v Nielsen, Claus | L | 3-0 |
| Qatar Open XD | 2016/09/01 11:20 | Hampus Soderlund v Nielsen, Claus | L | 4-1 |
| Bulgaria Open 2019, MS | 2016/08/26 16:00 | Nielsen, Claus v Tran, Anthony | L | 2-4 |
| Bulgaria Open 2019, MS | 2016/08/26 12:55 | Karakasevic, Aleksandar v Nielsen, Claus | W | 3-4 |
| Qatar Open 2019, MS | 2016/10/06 12:48 | Samsonov, Vladimir v Lundqvist, Jens | L | 3-1 |
| Qatar Open 2019, MS | 2016/10/06 12:02 | Dimitrij Ovtcharov v Lundqvist, Jens | W | 0-1 |
| Qatar Open 2019, MS | 2016/09/02 11:15 | Lundqvist, Jens v Wang, Xi | L | 0-4 |
| Swedish Open (WTP) 2019, MS, Qualification | 2014/11/14 13:00 | Xu, Xin v Lundqvist, Jens | L | 4-2 |