Stadium: Cancha La Aficion Round: 26 Ground: Hardcourt outdoor
| Challenger Launceston MD | 2018/02/06 06:50 | King/O'Brien v Bolt/Mousley | 6-7,7-6,9-11 |
| Challenger Burnie MD | 2018/01/30 05:00 | Purcell/Whittington v King/O'Brien | 6-1,7-6 |
| Challenger Morelos MD | 2017/02/25 18:00 | King/O'Brien v Krajicek/Withrow | 7-6,6-7,9-11 |
| Challenger Morelos MD | 2017/02/24 20:30 | Gomez/Patino v King/O'Brien | 7-6,4-6,10-12 |
| Challenger Morelos MD | 2017/02/22 19:45 | Chaplin/Thompson v King/O'Brien | 5-7,5-7 |
| Challenger Leon MD | 2015/04/09 22:40 | Krajicek/Ram v King/O'Brien | 7-5,7-6 |