Stadium: Court 1 Round: 25
| ITF Women Macon | 2017/10/24 16:55 | Kostova, Elitsa v Jamie Loeb | 2-6,2-6 |
| Obidos, Singles W-WITF-POR-12A | 2017/10/11 11:30 | Berfu Cengiz v Kostova, Elitsa | 3-6,6-3,6-2 |
| Templeton, Singles W-WITF-USA-32A | 2017/09/29 20:40 | Jamie Loeb v Kostova, Elitsa | 6-2,6-4 |
| Templeton, Singles W-WITF-USA-32A | 2017/09/28 19:45 | Kostova, Elitsa v Kleybanova, Alisa | 6-4,3-6,6-2 |
| Templeton, Singles W-WITF-USA-32A | 2017/09/27 22:00 | Kostova, Elitsa v Sabrina Santamaria | 6-1,6-3 |
| Tampico, Simples W-WITF-MEX-02A | 2017/09/19 21:25 | Kostova, Elitsa v Victoria Rodriguez | 6-7,2-6 |
| ITF Women Las Vegas | 2017/09/17 20:05 | Karatantcheva, Sesil v Kostova, Elitsa | 6-4,4-6,7-5 |
| ITF Women Las Vegas | 2017/09/16 21:30 | Anna Karolina Schmiedlova v Kostova, Elitsa | 5-7,4-6 |
| ITF Women Macon Qual | 2017/10/23 19:30 | Usue Maitane Arconada v Jessica Pegula | 6-7,4-6 |
| ITF Women Macon Qual | 2017/10/22 19:20 | Usue Maitane Arconada v Zlochova, Zuzana | 6-1,6-4 |
| ITF Women Stillwater | 2017/09/30 20:35 | Usue Maitane Arconada v Wozniak, Aleksandra | 6-1,2-6,5-7 |
| ITF Women Stillwater | 2017/09/29 21:40 | Collins, Danielle v Usue Maitane Arconada | 6-3,4-6,1-6 |
| ITF Women Stillwater | 2017/09/28 19:10 | Mossmer, Nicole v Usue Maitane Arconada | 3-6,1-6 |
| ITF Women Stillwater | 2017/09/27 15:00 | Harriet Dart v Usue Maitane Arconada | 4-6,1-6 |
| Tampico, Simples W-WITF-MEX-02A | 2017/09/22 23:00 | Usue Maitane Arconada v Louisa Chirico | 3-6,6-7 |
| Tampico, Simples W-WITF-MEX-02A | 2017/09/21 22:40 | Usue Maitane Arconada v Ana Sofia Sanchez | 6-3,6-0 |