| ITF - Mazedonien F2 | 2017/08/03 07:30 | Ioannis Stergiou v Rrezart Cungu | 0-6,6-7 |
| Davis Cup | 2017/04/08 10:55 | Ioannis Stergiou v Rrezart Cungu | 5-7,0-6 |
| Davis Cup | 2018/04/05 08:00 | Arturs Lazdins v Rrezart Cungu | 3-6,1-6 |
| Davis Cup | 2018/04/04 07:00 | Rrezart Cungu v Torgom Asatryan | 6-3,6-0 |
| Challenger - San Francisco - Qualifikation | 2018/02/04 22:20 | Rrezart Cungu v Karue Sell | 3-6,1-6 |
| Challenger - San Francisco - Qualifikation | 2018/02/03 23:10 | Michael Zhu v Rrezart Cungu | 6-4,4-6,2-6 |
| ITF - USA F3 | 2018/01/09 15:00 | Jaume Pla Malfeito v Rrezart Cungu | 6-3,6-3 |
| ITF - Tunesien F32 | 2017/10/25 10:00 | Pol Toledo Bague v Rrezart Cungu | 6-2,6-1 |
| ITF - Tunesien F31 | 2017/10/18 10:40 | Oriol Roca Batalla v Rrezart Cungu | 6-3,6-4 |
| ITF - Serbien F5 | 2017/09/07 07:00 | Samuel Bensoussan v Rrezart Cungu | 7-5,6-0 |
| Davis Cup | 2018/04/05 09:15 | Ioannis Stergiou v Sedrak Khachatryan | 6-1,6-3 |
| Davis Cup | 2018/04/04 07:00 | Roberts Grinvalds v Ioannis Stergiou | 0-6,4-6 |
| ITF - Griechenland F5 | 2018/03/29 10:15 | Ioannis Stergiou v Tomas Barrios Vera | 3-6,3-6 |
| ITF - Griechenland F5 | 2018/03/28 06:00 | Markos Kalovelonis v Ioannis Stergiou | 3-6,2-6 |
| ITF - Griechenland F4 | 2018/03/21 12:45 | Petr Michnev v Ioannis Stergiou | 6-4,6-4 |
| ITF - Griechenland F3 | 2018/03/14 08:00 | Filippo Baldi v Ioannis Stergiou | 6-7,6-2,6-2 |
| ITF - Griechenland F2 | 2018/03/08 10:25 | Jakob Sude v Ioannis Stergiou | 7-6,6-1 |
| ITF - Griechenland F2 | 2018/03/06 08:00 | Ioannis Stergiou v Michal Konecny | 7-5,6-0 |