| WTA Rabat Qual | 04/28 11:30 | 45 | [114] Anna Blinkova v Daniela Seguel [174] | 6-4,7-6 | |
| WTA Stuttgart Qual | 04/21 14:10 | 45 | [35] Alize Cornet v Daniela Seguel [175] | 6-1,6-3 | |
| WTA Bogota | 04/13 21:00 | 27 | [191] Daniela Seguel v Ana Bogdan [76] | 1-6,1-6 | |
| WTA Bogota | 04/12 15:00 | 26 | [62] Tatjana Maria v Daniela Seguel [191] | 3-6,1-6 | |
| WTA Bogota | 04/09 15:00 | 25 | [191] Daniela Seguel v Nicole Gibbs [118] | 6-2,6-2 | |
| WTA Bogota Qual | 04/08 15:30 | - | [166] Maryna Zanevska v Daniela Seguel [192] | 3-6,3-6 | |
| WTA Bogota Qual | 04/07 16:10 | 45 | Jessica Plazas v Daniela Seguel | 3-6,3-6 | |
| WTA Charleston Qual | 03/31 14:00 | 45 | [340] Alla Kudryavtseva v Daniela Seguel [192] | 7-5,4-6,6-2 | |
| WTA Acapulco Qual | 02/24 23:30 | 45 | Daniela Seguel v Jasmine Paolini | 6-3,3-6,1-6 | |
| 2018 Fed Cup | 02/09 18:40 | - | Daniela Seguel v Maria F H Gonzalez | Retired | |
| 2018 Fed Cup | 02/08 19:30 | 1 | Veronica C Royg v Daniela Seguel | 6-7,4-6 | |
| ITF Women Midland Qual | 01/29 17:15 | 54 | Daniela Seguel v Julia Elbaba | 3-6,4-6 | |
| ITF Women Midland Qual | 01/28 15:00 | 54 | Daniela Seguel v Victoria Rodriguez | 7-6,6-2 | |
| WTA Newport Beach | 01/23 21:30 | 25 | Daniela Seguel v Carol Zhao | 3-6,6-2,5-7 | |
| WTA Newport Beach Qual | 01/21 21:40 | - | Daniela Seguel v Amandine Hesse | 6-4,7-5 | |
| WTA Newport Beach Qual | 01/20 19:40 | 26 | Daniela Seguel v Alexa Guarachi | 6-3,6-4 | |
| Australian Open Women Qual | 01/13 05:50 | 45 | Marta Kostyuk v Daniela Seguel | 1-6,6-4,6-2 | |
| Australian Open Women Qual | 01/11 06:25 | 44 | Jamie Loeb v Daniela Seguel | 6-3,5-7,3-6 | |
| WTA Limoges | 11/07 15:55 | 25 | [207] Daniela Seguel v Olga Danilovic [465] | 2-6,3-6 | |
| WTA Limoges Qual | 11/05 10:00 | 46 | [203] Daniela Seguel v Harmony Tan [366] | 6-4,3-6,7-6 | |
| WTA Limoges Qual | 11/04 09:00 | 45 | [203] Daniela Seguel v Marine Partaud [488] | 6-4,2-6,6-3 | |
| ITF Women Poitiers Qual | 10/23 10:30 | 54 | [250] Katarina Zavatska v Daniela Seguel [203] | 6-4,2-6,6-4 | |
| ITF Women Poitiers Qual | 10/22 10:00 | 54 | [72] Maria Irigoyen v Daniela Seguel [222] | 1-6,3-6 | |
| ITF Women Poitiers Qual | 10/21 13:50 | 54 | [284] Melanie Stokke v Daniela Seguel [222] | 6-7,4-6 | |
| ITF Women Seville | 10/14 10:30 | 29 | Daniela Seguel v Marie Benoit | 2-6,6-1,6-2 | |
| ITF Women Seville | 10/13 12:50 | 28 | Daniela Seguel v Vivien Juhaszova | 6-7,6-2,7-6 | |
| ITF Women Seville | 10/12 13:05 | 27 | Daniela Seguel v Panna Udvardy | 6-2,6-1 | |
| ITF Women Seville | 10/11 14:00 | 26 | Daniela Seguel v Yvonne Cavelle-Reimers | 7-6,4-6,6-2 | |
| ITF Women Seville | 10/09 14:30 | 25 | Daniela Seguel v Vanda Lukacs | 7-5,6-3 | |
| ITF Women Saint Malo | 09/22 15:50 | 27 | [167] Alexandra Cadantu v Daniela Seguel [222] | 2-6,6-3,6-4 |