| Giraldilla Int. - Mixed dubbel | 2018/12/14 13:45 | Ronja Stern v Soraya De Visch Eijbergen | L | 0-2 |
| Giraldilla Int. - Mixed dubbel | 2018/11/30 12:15 | Ronja Stern v Tereza Svabikova | W | 2-1 |
| Dutch Open - Damer | 2018/10/10 07:40 | Maria Ulitina v Ronja Stern | L | 2-0 |
| Swiss Open - Damdubbel - Kval | 2018/10/09 11:45 | Getter Saar v Ronja Stern | W | 1-2 |
| Giraldilla Int. - Mixed dubbel | 2018/09/21 11:40 | Kate Ludik v Ronja Stern | L | 2-0 |
| Swiss Open - Damdubbel - Kval | 2018/09/12 17:15 | Ronja Stern v Vrushali Gummadi | L | 0-2 |
| Giraldilla Int. - Mixed dubbel | 2018/08/29 11:20 | Michelle Skodstrup v Ronja Stern | L | 2-0 |
| Swiss Open - Damdubbel - Kval | 2018/08/28 11:15 | Ronja Stern v Isabel Zhong | W | 2-1 |
| Swiss Open - Damdubbel - Kval | 2019/02/20 14:30 | Gerda Voitechovskaja v Amalie Cecilie Kudsk | L | 0-2 |