| WTA Praga | 05/01 09:00 | 25 | [66] Mona Barthel v Antonia Lottner [158] | 0-6,5-7 | |
| WTA Istanbul | 04/23 16:00 | 25 | [65] Mona Barthel v Christina McHale [88] | 6-7,6-4,3-6 | |
| WTA Lugano | 04/14 08:30 | 27 | [68] Mona Barthel v Elise Mertens [20] | 4-6,7-5,6-7 | |
| WTA Lugano | 04/13 12:00 | 26 | [68] Mona Barthel v Donna Vekic [55] | 6-3,4-6,6-4 | |
| WTA Lugano | 04/11 11:20 | 25 | [29] Svetlana Kuznetsova v Mona Barthel [68] | 6-4,3-6,4-6 | |
| WTA Miami | 03/20 22:20 | 23 | [65] Mona Barthel v Timea Babos [47] | 6-7,3-6 | |
| WTA Indian Wells | 03/10 19:00 | 24 | Mona Barthel v Elina Svitolina | 4-6,3-6 | |
| WTA Indian Wells | 03/08 20:40 | 23 | Veronica Cepede Royg v Mona Barthel | 2-6,1-6 | |
| WTA Budapest | 02/24 16:05 | 28 | Dominika Cibulkova v Mona Barthel | 6-3,6-2 | |
| WTA Budapest | 02/23 14:05 | 27 | Mona Barthel v Ysaline Bonaventure | 6-3,6-4 | |
| WTA Budapest | 02/22 16:00 | 26 | Timea Babos v Mona Barthel | 4-6,6-4,3-6 | |
| WTA Budapest | 02/19 14:25 | 25 | Mona Barthel v Kateryna Kozlova | 7-6,5-7,6-0 | |
| WTA Doha | 02/12 17:35 | 24 | Mona Barthel v Agnieszka Radwanska | 6-3,3-6,5-7 | |
| WTA San Pietroburgo | 01/29 10:00 | 25 | Mona Barthel v Alize Cornet | 3-6,5-7 | |
| Australian Open femminili | 01/17 07:10 | 24 | Mona Barthel v Anett Kontaveit | 3-6,6-4,3-6 | |
| Australian Open femminili | 01/15 00:00 | 23 | Monica Niculescu v Mona Barthel | 4-6,5-7 | |
| WTA Hobart | 01/07 04:10 | 25 | Varvara Lepchenko v Mona Barthel | 6-0,7-6 | |
| WTA Auckland | 01/01 22:00 | 25 | Varvara Lepchenko v Mona Barthel | 6-2,6-2 | |
| WTA Pechino | 09/30 08:20 | 24 | [49] Mona Barthel v Sorana Cirstea [46] | 6-7,1-6 | |
| WTA Wuhan | 09/24 07:55 | 24 | [70] Monica Puig v Mona Barthel [51] | 6-0,6-7,6-4 | |
| WTA Guangzhou | 09/20 07:35 | 26 | [65] Aleksandra Krunic v Mona Barthel [51] | 6-4,6-0 | |
| WTA Guangzhou | 09/18 05:30 | 25 | [53] Mona Barthel v Jing-Jing Lu [210] | 6-0,4-6,6-3 | |
| US Open femminili | 08/28 21:30 | 23 | [51] Mona Barthel v Ekaterina Makarova [40] | 2-6,1-6 | |
| WTA New Haven - Qual. | 08/18 19:00 | 44 | [53] Mona Barthel v Pauline Parmentier [98] | 2-6,3-6 | |
| WTA Cincinnati Qual | 08/12 15:55 | 44 | [49] Mona Barthel v Zarina Diyas [108] | 5-7,2-6 | |
| WTA Toronto - Qual. | 08/05 18:55 | 44 | [50] Mona Barthel v Mariana Duque Marino [115] | 6-1,4-6,4-6 | |
| WTA Bastad | 07/27 14:05 | 26 | [127] Kateryna Kozlova v Mona Barthel [49] | 6-3,6-3 | |
| WTA Bastad | 07/25 15:30 | 25 | [49] Mona Barthel v Johanna Larsson [51] | 6-7,7-5,7-6 | |
| WTA Gstaad | 07/17 08:30 | 25 | [94] Maria Sakkari v Mona Barthel [50] | 4-6,6-3,6-3 | |
| Wimbledon Femminile | 07/04 10:30 | 23 | [48] Mona Barthel v Coco Vandeweghe [25] | 5-7,2-6 |
Wikipedia - Mona Barthel
Mona Barthel (Bad Segeberg, 11 luglio 1990) è una tennista tedesca.