Stadium: Court 13 Round: 26 Ground: Hardcourt outdoor
| Challenger Vancouver MD | 2018/08/19 19:00 | Polmans/Purcell v Bambridge/Skupski | 6-4,3-6,6-10 |
| Challenger Vancouver MD | 2018/08/18 20:00 | Lawson/Reese v Polmans/Purcell | 4-6,3-6 |
| Challenger Vancouver MD | 2018/08/18 00:15 | Krajicek/Raja v Polmans/Purcell | 6-4,6-7,4-10 |
| Challenger Vancouver MD | 2018/08/15 23:00 | Polmans/Purcell v Aragone/Sigouin | 6-4,3-6,10-6 |
| Challenger Aptos MD | 2018/08/11 18:00 | O'Mara/Salisbury v Polmans/Purcell | 6-1,6-1 |
| Challenger Aptos MD | 2018/08/09 19:00 | Nedunchezhiyan/Raja v Polmans/Purcell | 6-7,2-6 |
| Challenger Aptos MD | 2018/08/08 20:15 | Polmans/Purcell v Fruttero/Novikov | 3-6,7-6,12-10 |
| Challenger Savannah MD | 2018/05/03 19:30 | Cuevas/Dellien v Polmans/Purcell | 3-6,6-4,10-7 |