Stadium: Clay 2 Round: 62 Ground: Hardcourt outdoor
| ITF Serbia F3 | 2018/08/21 11:20 | Christopher O'Connell v Ao Shen | 7-5,6-3 |
| Challenger Pullach Qual | 2018/08/04 14:15 | Kimmer Coppejans v Christopher O'Connell | 6-2,6-0 |
| Challenger Sopot Qual | 2018/07/30 12:00 | Maxime Janvier v Christopher O'Connell | 6-2,6-4 |
| Challenger Tampere | 2018/07/21 07:00 | Roberto Marcora v Christopher O'Connell | 6-1,7-6 |
| ATP Sydney Qual | 2018/01/06 00:50 | Christopher O'Connell v Nicolas Mahut | 6-2,4-6,4-6 |
| Challenger Playford Qual | 2018/01/01 01:00 | Christopher O'Connell v Marinko Matosevic | 4-6,0-6 |
| Challenger Playford Qual | 2017/12/31 00:30 | Brydan Klein v Christopher O'Connell | 6-3,6-7,2-6 |
| Challenger Playford Qual | 2017/12/29 23:30 | Christopher O'Connell v Mislav Bosnjak | 7-6,6-1 |
| ITF Austria F5 Qual | 2018/07/30 09:45 | Edward Hubner v Francesco Cano | 2-6,1-6 |
| ITF Austria F5 Qual | 2018/07/29 10:30 | Edward Hubner v David Martirosian | 3-6,6-3,6-0 |
| ITF Austria F4 | 2018/07/25 08:00 | Yuta Shimizu v Edward Hubner | 6-0,6-2 |
| ITF Austria F4 | 2018/07/24 10:15 | Edward Hubner v Neil Oberleitner | 3-6,6-2,7-6 |
| ITF Austria F4 Qual | 2018/07/22 11:15 | Lewie Lane v Edward Hubner | 2-6,1-6 |
| ITF Austria F4 Qual | 2018/07/21 10:00 | Edward Hubner v Jakob Aichhorn | 7-5,6-4 |
| ITF Austria F3 | 2018/07/14 07:15 | Edward Hubner v Christian Seraphim | 6-2,5-7,7-5 |
| ITF Austria F2 | 2018/07/11 12:25 | Edward Hubner v Eduardo Dischinger | 4-6,2-6 |