Stadium: Court 3 Round: 25 Ground: Clay
| Oldenzaal, Singles W-ITF-NED-03A | 2019/08/15 14:10 | Sibille, Constance v Burger, Cindy | 2-6,2-6 |
| ITF W100 Contrexeville | 2019/07/09 09:55 | Jana Fett v Sibille, Constance | 6-4,6-3 |
| ITF W100 Contrexeville | 2019/07/08 12:45 | Sibille, Constance v Honcova, Michaela | 6-2,6-1 |
| Tabarka, Singles W-ITF-TUN-18A | 2019/06/28 10:00 | Sibille, Constance v Djoubri, Salma | 4-6,7-5,3-6 |
| Tabarka, Singles W-ITF-TUN-18A | 2019/06/27 08:00 | Sibille, Constance v Maria Paulina Perez Garcia | 6-3,7-5 |
| Tabarka, Singles W-ITF-TUN-18A | 2019/06/25 09:35 | Sibille, Constance v Lacasse, Raphaelle | 6-4,6-2 |
| Tabarka, Singles W-ITF-TUN-18A | 2019/06/20 10:50 | Carla Touly v Sibille, Constance | 6-2,6-1 |
| Tabarka, Singles W-ITF-TUN-18A | 2019/06/18 09:00 | Lacasse, Raphaelle v Sibille, Constance | 3-6,5-7 |
| ITF W15 Wanfercee-Baulet | 2019/08/20 09:20 | Timsit, Agathe v Lambrecht, Marte | 4-6,4-6 |
| ITF W15 Wanfercee-Baulet | 2019/08/19 09:00 | Lambrecht, Marte v Marie Villet | 6-4,6-4 |