| ITF W35 Hammamet | 04/16 13:35 | 25 | Julia Middendorf v Antonia Schmidt | 0-6,2-6 | |
| ITF W35 Hammamet | 04/10 08:30 | 25 | Matilde Mariani v Julia Middendorf | 6-1,6-4 | |
| ITF W75 Split | 04/02 13:00 | 25 | [227] Justina Mikulskyte v Julia Middendorf [372] | 6-2,6-3 | |
| ITF W75 Split | 04/01 09:30 | 54 | Julia Middendorf v Dea Herdzelas | 7-5,6-3 | |
| ITF W35 Alaminos-Larnaca | 03/20 09:50 | 25 | [370] Julia Middendorf v Despina Papamichail [260] | 1-6,3-6 | |
| ITF W35 Alaminos-Larnaca | 03/18 09:30 | 54 | Julia Middendorf v Michaela Laki | 6-4,6-3 | |
| ITF W35 Alaminos-Larnaca | 03/12 09:45 | 25 | Julia Middendorf v Oksana Selekhmeteva | 4-6,1-6 | |
| ITF W35 Alaminos-Larnaca | 03/11 10:40 | 54 | [372] Julia Middendorf v Alice Rame [482] | 6-3,6-2 | |
| ITF W35 Alaminos-Larnaca | 03/10 09:30 | 54 | Julia Middendorf v Rebeka Antal | 6-2,6-0 | |
| ITF W35 Helsinki | 02/29 11:00 | 26 | [243] Dejana Radanovic v Julia Middendorf [373] | 6-2,5-7,6-2 | |
| ITF W35 Helsinki | 02/28 09:50 | 25 | [321] Katarina Kozarov v Julia Middendorf [373] | 2-6,4-6 | |
| ITF W35 Helsinki | 02/27 08:00 | 54 | Julia Middendorf v Patricija Paukstyte | 6-2,6-1 | |
| ITF W75 Altenkirchen | 02/12 13:25 | 54 | Julia Middendorf v Stephanie Wagner | 2-6,1-6 | |
| ITF W50 Edgbaston | 02/06 10:00 | 25 | [364] Julia Middendorf v Lara Salden [283] | 4-6,6-7 | |
| ITF W50 Oporto | 01/31 15:00 | 25 | [392] Anastasia Abbagnato v Julia Middendorf [367] | 6-1,2-6,7-5 | |
| ITF W50 Oporto | 01/29 16:25 | 45 | Julia Middendorf v Gina Feistel | Retired | |
| ITF W35 Sunderland | 01/18 10:00 | 26 | [283] Kathinka Von Deichmann v Julia Middendorf [382] | 6-3,6-4 | |
| ITF W35 Sunderland | 01/16 14:45 | 25 | Julia Middendorf v Alice Gillan | 6-4,6-4 | |
| ITF W35 Loughborough | 01/11 11:45 | 26 | [250] Sonay Kartal v Julia Middendorf [382] | 6-2,6-4 | |
| ITF W35 Loughborough | 01/10 15:55 | 25 | Julia Middendorf v Emma Wilson | 4-6,7-6,6-2 | |
| ITF W40 Pétange | 11/14 13:00 | 25 | Julia Middendorf v Mona Barthel | Walkover | |
| ITF W25 Sunderland | 11/03 10:00 | 27 | [334] Elena Malygina v Julia Middendorf [380] | 7-6,7-5 | |
| ITF W25 Sunderland | 11/02 10:00 | 26 | [144] Freya Christie v Julia Middendorf [380] | 6-4,3-6,3-6 | |
| ITF W25 Sunderland | 10/31 13:00 | 25 | [380] Julia Middendorf v Marie Benoit [228] | 6-2,3-6,6-3 | |
| ITF W60 Glasgow | 10/23 08:55 | 54 | Julia Middendorf v Mingge Xu | 2-6,1-6 | |
| ITF W60 Hamburgo | 10/19 12:55 | 26 | Eliessa Vanlangendonck v Julia Middendorf | 6-4,4-6,6-2 | |
| ITF W60 Hamburgo | 10/17 09:25 | 25 | Amelia Waligora v Julia Middendorf | 6-1,4-6,0-6 | |
| ITF W25 Santa Margarita | 09/28 10:40 | 26 | Julia Middendorf v Laura Hietaranta | 0-6,2-6 | |
| ITF W25 Santa Margarita | 09/27 10:25 | 25 | [358] Julia Middendorf v Miriana Tona [406] | 7-5,6-3 | |
| ITF W60 Montreux | 09/06 17:45 | 25 | [387] Julia Middendorf v Oceane Dodin [117] | 3-6,5-7 |