| Billie Jean King Cup | 04/13 19:05 | 64 | Emma Navarro v Sofia Costoulas | CANC | |
| Billie Jean King Cup | 04/12 22:00 | 64 | [5] Jessica Pegula v Sofia Costoulas [279] | 4-6,6-2,6-3 | |
| ITF W50 Kashiwa | 04/05 03:15 | 27 | [356] Ya-Hsuan Lee v Sofia Costoulas [285] | 6-1,6-2 | |
| ITF W50 Kashiwa | 04/04 03:30 | 26 | [285] Sofia Costoulas v Priscilla Hon [189] | 6-2,6-2 | |
| ITF W50 Kashiwa | 04/02 03:40 | 25 | [285] Sofia Costoulas v Sohyun Park [299] | 6-2,6-2 | |
| ITF W50 Kofu | 03/28 03:10 | 26 | [286] Sofia Costoulas v Destanee Aiava [196] | 3-6,4-6 | |
| ITF W50 Kofu | 03/27 04:00 | 25 | Sofia Costoulas v Rin Nakagawara | 6-1,6-2 | |
| ITF W15 Hinode | 03/23 01:00 | 28 | Sofia Costoulas v Maegan Manasse | 2-6,3-6 | |
| ITF W15 Hinode | 03/22 00:55 | 27 | Sofia Costoulas v Dabin Kim | 3-6,6-3,6-0 | |
| ITF W15 Hinode | 03/21 04:20 | 26 | Sofia Costoulas v Kisa Yoshioka | 6-0,6-3 | |
| ITF W15 Hinode | 03/20 05:00 | 25 | Sofia Costoulas v Yui Chikaraishi | 6-0,6-2 | |
| ITF W35 Santo Domingo | 03/13 13:25 | 25 | [279] Sofia Costoulas v Maria F H Gonzalez [205] | 6-0,3-6,3-6 |
Sofia Costoulas (Genk, 2 aprile 2005) è una tennista belga.