| Jamaica Int. | 2019/03/07 15:30 | Nicholas Robert Henson Waller v Robert Mann | L | 2-0 |
| Giraldilla Int. XD | 2018/11/21 18:40 | Lucas Claerbout v Robert Mann | L | 2-0 |
| Giraldilla Int. XD | 2018/10/30 19:30 | Luis Enrique Penalver v Robert Mann | L | 2-0 |
| Dutch Open | 2018/10/09 16:55 | June Wei Cheam v Robert Mann | L | 2-0 |
| Swiss Open WD Qual | 2018/05/08 01:55 | Yehezkiel Fritz Mainaky v Robert Mann | L | 2-0 |
| Swiss Open WD Qual | 2018/05/08 00:06 | Dylan Soedjasa v Robert Mann | W | 0-2 |
| Swiss Open WD Qual | 2018/04/30 21:46 | Anthony Joe v Robert Mann | L | 2-0 |
| Indonesia Masters XD | 2018/04/24 10:00 | Robert Mann v Emre Lale | L | 0-2 |