| WTA Madrid | 04/25 08:00 | 23 | [67] Jule Niemeier v Xinyu Wang [60] | 6-4,6-2 | |
| WTA Stuttgart | 04/19 15:00 | 25 | [65] Jule Niemeier v Elena Rybakina [7] | 5-7,3-6 | |
| Billie Jean King Cup | 04/15 11:55 | - | [65] Jule Niemeier v Beatriz Haddad Maia [14] | 7-6,3-6,6-2 | |
| WTA Charleston | 04/04 16:35 | 24 | [71] Caty McNally v Jule Niemeier [65] | 6-4,6-1 | |
| WTA Miami | 03/22 22:20 | 23 | [63] Anna Blinkova v Jule Niemeier [67] | 6-4,6-1 | |
| WTA Indian Wells | 03/09 19:00 | 23 | [45] Katerina Siniakova v Jule Niemeier [72] | 7-5,6-4 | |
| WTA Monterrey | 02/27 18:00 | 25 | [206] Caroline Dolehide v Jule Niemeier [69] | 6-1,6-0 | |
| WTA Merida | 02/21 21:15 | 25 | [69] Jule Niemeier v Panna Udvardy [91] | 6-7,6-7 | |
| WTA Linz | 02/08 19:25 | 26 | [44] Anastasia Potapova v Jule Niemeier [71] | 7-5,3-6,6-3 | |
| WTA Linz | 02/06 18:50 | 25 | [71] Jule Niemeier v Sofia Kenin [209] | 2-6,6-3,6-4 | |
| WTA Lyon | 02/01 17:30 | 26 | [73] Camila Osorio v Jule Niemeier [71] | 7-6,7-5 | |
| WTA Lyon | 01/30 19:00 | 25 | [141] Olga Danilovic v Jule Niemeier [71] | 5-7,6-2,3-6 | |
| Australian Open - Damer | 01/16 08:00 | 23 | [1] Iga Swiatek v Jule Niemeier [69] | 6-4,7-5 | |
| WTA Adelaide 2 | 01/07 07:45 | 14 | [31] Karolina Pliskova v Jule Niemeier [65] | 6-4,6-3 | |
| United Cup - Damer | 01/02 02:20 | - | [11] Madison Keys v Jule Niemeier [65] | 6-2,6-3 | |
| United Cup - Damer | 12/31 00:50 | - | [65] Jule Niemeier v Marie Bouzkova [24] | 2-6,5-7 | |
| Billie Jean King Cup | 11/12 13:00 | 64 | Petra Martic v Jule Niemeier | Cancelled | |
| Billie Jean King Cup | 11/12 12:50 | 64 | [136] Ana Konjuh v Jule Niemeier [61] | 2-6,1-6 | |
| Billie Jean King Cup | 11/11 16:50 | 64 | [194] Petra Marcinko v Jule Niemeier [61] | 6-3,6-2 | |
| Billie Jean King Cup | 11/11 16:30 | 64 | Donna Vekic v Jule Niemeier | Cancelled | |
| WTA Cluj-Napoca | 10/14 13:40 | 27 | [74] Jule Niemeier v Jasmine Paolini [78] | 5-7,5-7 | |
| WTA Cluj-Napoca | 10/12 16:15 | 26 | [74] Jule Niemeier v Kamilla Rakhimova [127] | 6-4,6-4 | |
| WTA Cluj-Napoca | 10/10 15:00 | 25 | [46] Ana Bogdan v Jule Niemeier [74] | 6-7,2-6 | |
| WTA Parma | 09/27 12:00 | 25 | [79] Jasmine Paolini v Jule Niemeier [72] | 5-7,6-4,6-2 | |
| WTA Parma | 09/25 10:50 | 19 | [72] Jule Niemeier v Oksana Selekhmeteva [151] | 6-3,6-3 | |
| WTA Parma | 09/24 07:30 | 14 | Jule Niemeier v Francesca Pace | 6-2,6-1 | |
| WTA Budapest | 09/21 10:05 | 26 | [72] Jule Niemeier v Tamara Zidansek [100] | 3-6,6-7 | |
| WTA Budapest | 09/20 10:20 | 25 | [72] Jule Niemeier v Magdalena Frech [120] | 6-4,5-7,6-3 | |
| US Open - Damer | 09/05 17:45 | 26 | [1] Iga Swiatek v Jule Niemeier [108] | 2-6,6-4,6-0 | |
| US Open - Damer | 09/04 00:45 | 25 | [108] Jule Niemeier v Qinwen Zheng [39] | 6-4,7-6 |