| ITF W80 Poitiers | 10/26 10:25 | 26 | [159] Jessika Ponchet v Simona Waltert [167] | 4-6,6-2,7-6 | |
| ITF W80 Poitiers | 10/25 14:05 | 25 | [167] Simona Waltert v Alice Robbe [214] | 6-0,4-6,6-3 | |
| ITF W100 Shrewsbury | 10/20 11:55 | 27 | [177] Simona Waltert v Amarni Banks [432] | 6-2,3-6,2-6 | |
| ITF W100 Shrewsbury | 10/19 09:25 | 26 | Simona Waltert v Andre Lukosiute | 7-5,7-6 | |
| ITF W100 Shrewsbury | 10/18 10:30 | 25 | Simona Waltert v Mariam Bolkvadze | Cancelled | |
| ITF W100 Shrewsbury | 10/18 10:20 | 25 | Simona Waltert v Pemra Ozgen | 6-1,6-4 | |
| WTA Rouen | 10/11 09:30 | 26 | [62] Greet Minnen v Simona Waltert [178] | 6-2,6-3 | |
| WTA Rouen | 10/09 16:15 | 25 | [178] Simona Waltert v Chloe Paquet [187] | 6-0,5-7,6-2 | |
| ITF W80 Le Neubourg | 09/14 11:30 | 26 | [148] Simona Waltert v Tiphanie Lemaitre [417] | 3-6,3-6 | |
| ITF W80 Le Neubourg | 09/12 10:00 | 25 | Simona Waltert v Nahia Berecoechea | 6-3,7-5 | |
| US Open Women | 08/24 14:00 | 15 | [108] Laura Siegemund v Simona Waltert [151] | 6-2,7-6 | |
| US Open Women | 08/22 19:50 | 14 | [251] Mona Barthel v Simona Waltert [151] | 2-6,4-6 | |
| WTA Barranquilla | 08/14 20:55 | 25 | [395] Sabine Lisicki v Simona Waltert [147] | 7-5,7-6 | |
| ITF W100 Landisville | 08/09 21:35 | 25 | Simona Waltert v Mary Stoiana | 3-6,3-6 | |
| WTA Lausanne | 07/26 12:30 | 25 | [39] Ana Bogdan v Simona Waltert [132] | 2-6,6-3,6-3 | |
| WTA Iasi | 07/21 13:00 | 27 | [131] Simona Waltert v Ana Bogdan [49] | 0-6,4-6 | |
| WTA Iasi | 07/19 15:00 | 26 | [131] Simona Waltert v Petra Marcinko [173] | 7-6,6-3 | |
| WTA Iasi | 07/17 14:55 | 25 | [131] Simona Waltert v Carol Zhao [233] | 6-4,6-2 | |
| Wimbledon Women | 07/03 18:10 | 23 | [33] Marie Bouzkova v Simona Waltert [116] | 6-1,6-4 | |
| Wimbledon Women | 06/29 14:05 | 19 | [115] Simona Waltert v Emiliana Arango [184] | 6-4,7-5 | |
| Wimbledon Women | 06/28 16:15 | 15 | [115] Simona Waltert v Julia Riera [150] | 6-0,7-6 | |
| Wimbledon Women | 06/27 13:50 | 14 | [115] Simona Waltert v Leolia Jeanjean [143] | 6-2,6-4 | |
| ITF W100 Ilkley | 06/19 18:20 | 25 | [113] Simona Waltert v Sonay Kartal [303] | 1-6,0-6 | |
| WTA Nottingham | 06/10 10:00 | 45 | [128] Simona Waltert v Arina Rodionova [206] | 6-7,1-6 | |
| French Open Women | 06/01 10:50 | 24 | [44] Elisabetta Cocciaretto v Simona Waltert [128] | 6-2,6-3 | |
| French Open Women | 05/29 18:10 | 23 | [128] Simona Waltert v Elizabeth Mandlik [119] | 6-1,4-6,6-2 | |
| French Open Women | 05/26 12:20 | 19 | [127] Simona Waltert v Elsa Jacquemot [175] | 6-2,4-6,6-4 | |
| French Open Women | 05/24 12:20 | 15 | [127] Simona Waltert v Kristina Dmitruk [216] | 7-6,6-2 | |
| French Open Women | 05/22 10:10 | 14 | [127] Simona Waltert v Carole Monnet [197] | 6-1,6-3 | |
| ITF W100 Madrid | 05/18 10:30 | 26 | [122] Simona Waltert v Andrea Lazaro Garcia [419] | 0-6,7-5,3-6 |