Stadium: Court 2 Round: 25 Ground: Hardcourt outdoor
| WTA Charleston | 2018/04/02 14:00 | Laura Siegemund v Natalia Vikhlyantseva | 7-5,6-2 |
| WTA Miami | 2018/03/23 21:00 | Venus Williams v Natalia Vikhlyantseva | 7-5,6-4 |
| WTA Miami | 2018/03/21 21:35 | Natalia Vikhlyantseva v Rebecca Peterson | 7-5,6-1 |
| WTA Miami Qual | 2018/03/20 14:00 | Natalia Vikhlyantseva v Nicole Gibbs | 7-6,6-4 |
| WTA Miami Qual | 2018/03/19 14:00 | Natalia Vikhlyantseva v Emiliana Arango | 6-3,6-2 |
| WTA Indian Wells | 2018/03/10 20:35 | Natalia Vikhlyantseva v Julia Goerges | 4-6,1-6 |
| WTA Indian Wells | 2018/03/08 20:45 | Vera Zvonareva v Natalia Vikhlyantseva | 3-6,2-6 |
| WTA Indian Wells | 2018/02/26 19:00 | Nicole Gibbs v Natalia Vikhlyantseva | 7-5,6-2 |
| WTA Stuttgart | 2018/04/25 12:10 | Carina Witthoeft v Zarina Diyas | 3-6,2-6 |
| WTA Stuttgart Qual | 2018/04/23 13:20 | Carina Witthoeft v Marketa Vondrousova | 7-5,1-6,3-6 |
| WTA Stuttgart Qual | 2018/04/22 13:50 | Carina Witthoeft v Anna Zaja | 2-6,6-0,6-3 |
| WTA Stuttgart Qual | 2018/04/21 15:50 | Carina Witthoeft v Michaela Honcova | 6-0,6-1 |
| WTA Lugano | 2018/04/11 11:30 | Kirsten Flipkens v Carina Witthoeft | 1-6,6-4,6-3 |
| WTA Miami | 2018/03/24 15:00 | Carina Witthoeft v Zarina Diyas | 6-4,5-7,0-6 |
| WTA Miami | 2018/03/22 19:05 | Julia Goerges v Carina Witthoeft | 6-7,6-4,4-6 |
| WTA Miami | 2018/03/21 15:00 | Tatjana Maria v Carina Witthoeft | 3-6,4-6 |