Stadium: Court 5 Round: 45
| ITF Belgium F10 | 2015/08/13 08:00 | Goncalo Oliveira v Jan Choinski | 6-2,2-6,2-6 |
| Challenger Cherbourg | 2018/02/14 09:00 | Goncalo Oliveira v Mats Moraing | 5-7,6-7 |
| Challenger San Francisco | 2018/02/06 23:00 | Mitchell Krueger v Goncalo Oliveira | 6-3,6-4 |
| Challenger Dallas | 2018/01/31 18:20 | Dominik Koepfer v Goncalo Oliveira | 6-0,7-5 |
| Challenger Dallas | 2018/01/30 00:05 | Goncalo Oliveira v Yannick Hanfmann | 7-6,7-6 |
| Challenger Newport Beach | 2018/01/22 21:25 | Mitchell Krueger v Goncalo Oliveira | 7-6,6-2 |
| Australian Open Qual | 2018/01/09 23:00 | Alexander Bublik v Goncalo Oliveira | 6-3,1-6,6-3 |
| Challenger Bangkok | 2018/01/04 04:55 | Goncalo Oliveira v Aleksandr Nedovyesov | 4-6,3-6 |
| Challenger Bangkok | 2018/01/02 06:15 | Goncalo Oliveira v Luca Vanni | 4-6,6-2,6-1 |
| ITF Switzerland F1 | 2018/02/07 13:10 | Sami Reinwein v Jan Choinski | 6-4,7-5 |
| ITF Germany F2 | 2018/01/27 13:50 | Jan Choinski v Christopher Heyman | 4-6,6-4,6-7 |
| ITF Germany F2 | 2018/01/26 12:40 | Botic Van De Zandschulp v Jan Choinski | 1-6,3-6 |
| ITF Germany F2 | 2018/01/25 12:45 | Boy Westerhof v Jan Choinski | 4-6,1-6 |
| ITF Germany F2 | 2018/01/24 17:55 | Robin Lang v Jan Choinski | 3-6,2-6 |
| Challenger Koblenz | 2018/01/18 15:00 | Jan Choinski v Mohamed Safwat | 3-6,6-3,4-6 |
| Challenger Koblenz | 2018/01/16 18:10 | Tommy Robredo v Jan Choinski | 1-6,7-5,6-7 |
| ITF Germany F1 | 2018/01/11 11:00 | Jan Choinski v Kevin Krawietz | 5-7,6-3,3-6 |