Round: 45 Ground: Hardcourt indoor
| WTA Limoges | 2018/11/05 20:30 | Ana Bogdan v Arn, Greta | 6-2,7-5 |
| WTA Limoges | 2018/11/04 11:00 | Cepelova, Jana v Arn, Greta | 6-7,6-0,2-6 |
| WTA Limoges | 2018/11/03 13:00 | Coppola, Claudia v Arn, Greta | 0-6,4-6 |
| ITF Women Poitiers | 2018/10/20 13:35 | Eden Silva v Arn, Greta | 7-6,6-4 |
| WTA Luxembourg | 2018/10/13 12:00 | Arn, Greta v Jil Teichmann | 6-7,3-6 |
| Clermont-Ferrand, Singles W-WITF-FRA-23A | 2018/09/29 12:00 | Arn, Greta v Lesley Pattinama Kerkhove | 5-7,7-6,2-6 |
| Clermont-Ferrand, Singles W-WITF-FRA-23A | 2018/09/28 09:30 | Arn, Greta v Tess Sugnaux | 6-3,6-4 |
| Clermont-Ferrand, Singles W-WITF-FRA-23A | 2018/09/27 14:30 | Tamara Korpatsch v Arn, Greta | 6-1,4-6,4-6 |
| ITF Women Las Vegas | 2018/11/07 22:15 | Gibbs, Nicole v Sanchez, Maria | 7-5,6-0 |
| ITF Women Las Vegas | 2018/11/06 18:00 | Marand, Sanaz v Sanchez, Maria | 7-6,4-6,1-6 |
| ITF Women Las Vegas | 2018/11/05 20:15 | Rhiann Newborn v Sanchez, Maria | 2-6,7-6,1-6 |
| ITF Women Las Vegas | 2018/11/04 23:50 | Douglas, Ellie v Sanchez, Maria | 3-6,4-6 |
| ITF Women Toronto | 2018/10/30 14:00 | Sanchez, Maria v Jessika Ponchet | 0-6,1-6 |
| ITF Women Saguenay | 2018/10/25 17:35 | Sanchez, Maria v Conny Perrin | 6-4,5-7,2-6 |
| ITF Women Saguenay | 2018/10/24 15:30 | Sanchez, Maria v Maria Mateas | 6-2,6-4 |
| ITF Women Stockton | 2018/10/03 20:55 | Osaka, Mari v Sanchez, Maria | 6-1,6-3 |