Stadium: Centre Court Round: 29 Ground: Hardcourt outdoor
| 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 |
| Challenger Savannah MD | 2018/04/30 18:35 | Riffice/Ritschard v Polmans/Purcell | 4-6,4-6 |
| Challenger Vancouver MD | 2018/08/18 02:10 | Fabbiano/Reid v Bambridge/Skupski | 3-6,2-6 |
| Challenger Vancouver MD | 2018/08/16 23:55 | Verdugo/Siljestrom v Bambridge/Skupski | 4-6,6-7 |
| Challenger Vancouver MD | 2018/08/16 02:15 | Maden/Travaglia v Bambridge/Skupski | 1-6,3-6 |
| 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 22:35 | King/Pasha v Bambridge/Skupski | 3-6,5-7 |
| Challenger Aptos MD | 2018/08/09 01:40 | King/Martin v Bambridge/Skupski | 6-2,2-6,5-10 |