Stadium: Estadio Round: 28 Ground: Hardcourt outdoor
| Challenger Aptos MD | 2018/08/12 20:40 | O'Mara/Salisbury v Kokkinakis/Reid | 2-6,6-4,8-10 |
| Challenger Aptos MD | 2018/08/11 23:15 | Kokkinakis/Reid v Bambridge/Skupski | 3-6,7-5,10-6 |
| Challenger Aptos MD | 2018/08/09 19:15 | Verdugo/Siljestrom v Kokkinakis/Reid | 6-7,3-6 |
| Challenger Aptos MD | 2018/08/07 23:30 | Kokkinakis/Reid v Erlich/Roelofse | 3-6,6-2,10-7 |