Stadium: Stadium 7 Round: 45 Ground: Hardcourt outdoor
| Indian Wells, USA, Qualifying | 2018/03/05 22:10 | Arruabarrena, L. v Ons Jabeur | 6-2,2-6,6-4 |
| Acapulco, Mexico | 2018/02/27 22:00 | Arruabarrena, L. v Maria Sakkari | 3-6,6-7 |
| WTA Budapest | 2018/02/20 09:00 | Buzarnescu, Mihaela v Arruabarrena, L. | 7-6,6-1 |
| Fed Cup, Groupe Mondial | 2018/02/11 15:35 | Deborah Chiesa v Arruabarrena, L. | 6-4,2-6,7-6 |
| Fed Cup, Groupe Mondial | 2018/02/10 16:30 | Sara Errani v Arruabarrena, L. | 6-1,6-1 |
| St. Petersburg, Russia, Qualifying | 2018/01/27 16:25 | Sharipova, Sabina v Arruabarrena, L. | 3-6,7-6,7-5 |
| Open d'Australie - Femmes | 2018/01/18 00:00 | Arruabarrena, L. v Srtycova, Barbora | 3-6,4-6 |
| Open d'Australie - Femmes | 2018/01/16 00:00 | Arruabarrena, L. v Hogenkamp, Richel | 6-1,6-2 |
| Indian Wells, USA, Qualifying | 2018/03/05 22:20 | Carol Zhao v Ahn, Kristie | 6-4,6-7,2-6 |
| WTA - Indian Wells | 2018/03/01 22:55 | Ahn, Kristie v Sara Errani | 4-6,0-6 |
| WTA - Indian Wells | 2018/02/28 00:25 | Taylor Townsend v Ahn, Kristie | 5-7,1-6 |
| Open d'Australie - Femmes | 2018/01/16 00:00 | Ahn, Kristie v Srtycova, Barbora | 1-6,5-7 |
| WTA Sydney | 2018/01/08 09:15 | Ahn, Kristie v Bertens, Kiki | 2-6,4-6 |
| Sydney, Australie, Qualifications | 2018/01/06 23:00 | Ahn, Kristie v Monica Puig | 6-4,6-1 |
| Sydney, Australie, Qualifications | 2018/01/06 00:40 | Ahn, Kristie v Larsson, Johanna | 6-1,6-2 |
| Sydney, Australie, Qualifications | 2018/01/05 04:05 | Suarez Navarro, Carla v Ahn, Kristie | 1-6,4-6 |