| ITF - W50 Morelia | 02/15 02:40 | 26 | Thaisa Grana Pedretti v Jule Niemeier | 3-6,4-6 | |
| ITF - W50 Morelia | 02/13 18:50 | 25 | [242] Lesley Pattinama Kerkhove v Jule Niemeier [131] | 1-6,5-7 | |
| ITF - W100 Irapuato | 02/11 19:00 | 29 | [140] Jule Niemeier v Rebecca Marino [165] | 1-6,2-6 | |
| ITF - W100 Irapuato | 02/10 21:15 | 28 | [436] Whitney Osuigwe v Jule Niemeier [140] | 4-6,7-5,6-7 | |
| ITF - W100 Irapuato | 02/10 01:35 | 27 | [140] Jule Niemeier v Carol Zhao [213] | 7-6,6-7,6-2 | |
| ITF - W100 Irapuato | 02/08 20:30 | 26 | [140] Jule Niemeier v Hanna Chang [257] | 6-2,6-2 | |
| ITF - W100 Irapuato | 02/07 20:10 | 25 | Jule Niemeier v Claudia S M Solis | 6-1,2-6,6-0 | |
| WTA - Linz | 01/31 18:05 | 26 | [159] Jule Niemeier v Ekaterina Alexandrova [21] | 3-6,0-6 | |
| WTA - Linz | 01/30 15:25 | 25 | [50] Anna Blinkova v Jule Niemeier [159] | 3-6,4-6 | |
| WTA - Linz | 01/29 16:05 | 19 | [138] Nuria Parrizas-Diaz v Jule Niemeier [159] | 3-6,1-6 | |
| WTA - Linz | 01/28 19:05 | 14 | [163] Jule Niemeier v Harriet Dart [112] | 7-6,6-2 | |
| Australian Open - Feminin | 01/11 01:20 | 15 | [98] Renata Zarazua v Jule Niemeier [163] | 6-4,5-7,7-6 | |
| Australian Open - Feminin | 01/09 07:25 | 14 | [163] Jule Niemeier v Anastasia Tikhonova [153] | 6-7,6-4,6-2 | |
| WTA - Auckland | 12/30 23:35 | 19 | [128] Elena-Gabriela Ruse v Jule Niemeier [165] | 6-0,3-6,6-3 | |
| WTA - Auckland | 12/30 03:10 | 45 | [215] Elysia Bolton v Jule Niemeier [165] | 3-6,4-6 | |
| Billie Jean King Cup | 11/10 09:00 | - | [61] Clara Burel v Jule Niemeier [162] | 6-4,6-3 | |
| ITF - W60 Bratislava | 11/02 10:00 | 27 | [175] Jule Niemeier v Lea Boskovic [243] | 1-6,7-6,2-6 | |
| ITF - W60 Bratislava | 11/01 09:05 | 26 | [175] Jule Niemeier v Ayla Aksu [439] | 6-1,7-5 | |
| ITF - W60 Bratislava | 10/31 09:00 | 25 | [175] Jule Niemeier v Martyna Kubka [443] | Retired | |
| ITF - W60 Glasgow | 10/25 14:20 | 25 | [175] Jule Niemeier v Valentina Ryser [370] | 3-6,1-6 | |
| WTA - Guangzhou | 09/18 09:45 | 25 | [155] Harriet Dart v Jule Niemeier [136] | 6-3,6-2 | |
| WTA - Osaka | 09/12 04:40 | 25 | [136] Jule Niemeier v Anna Kalinskaya [92] | 4-6,4-6 | |
| ITF - W100 Tokyo | 09/07 05:10 | 27 | [111] Kimberly Birrell v Jule Niemeier [91] | 6-4,6-3 | |
| ITF - W100 Tokyo | 09/06 02:00 | 26 | [189] Ankita Raina v Jule Niemeier [91] | 2-6,7-5,6-7 | |
| ITF - W100 Tokyo | 09/04 03:45 | 25 | [173] Moyuka Uchijima v Jule Niemeier [91] | 2-6,4-6 | |
| US Open - Feminin | 08/23 20:20 | 14 | [89] Jule Niemeier v Despina Papamichail [193] | 3-6,4-6 | |
| WTA - Kozerki | 08/08 14:00 | 25 | [94] Jule Niemeier v Maja Chwalinska [420] | 6-4,2-6,3-6 | |
| WTA - Praga | 08/02 09:00 | 26 | [101] Jule Niemeier v Kateryna Baindl [98] | Retired | |
| WTA - Praga | 08/01 13:55 | 25 | [134] Heather Watson v Jule Niemeier [101] | 2-6,3-6 | |
| WTA - Hamburg | 07/27 09:00 | 27 | [106] Jule Niemeier v Daria Saville [225] | 3-6,2-6 |