| ITF Greece F9 | 2015/10/27 08:00 | Τιμούρ Χαμπιμπούλιν v Ioannis Stergiou | 6-7,6-3,6-2 |
| ITF Greece F8 | 2015/10/21 10:45 | Miki Jankovic v Ioannis Stergiou | 6-7,6-3,7-6 |
| ITF Greece F7 | 2015/10/15 07:00 | Ioannis Stergiou v Νέρμαν Φάτιτς | 5-7,6-3,6-7 |
| ITF Greece F7 | 2015/10/12 11:10 | Κόσμιν Οντίκα v Ioannis Stergiou | 4-6,6-1,4-6 |
| Ντέιβις Καπ | 2015/07/16 09:00 | Ioannis Stergiou v Pietro Grassi | 6-1,6-1 |
| ITF Greece F2 Qual | 2015/03/29 08:30 | Tόμας Πάπικ v Ioannis Stergiou | 6-4,6-3 |
| ITF Greece F2 Qual | 2015/03/28 09:30 | Aleksandar Jocic v Ioannis Stergiou | 0-6,0-6 |
| ITF Greece F1 | 2015/03/24 10:50 | Αλεσάντρο Μπέγκα v Ioannis Stergiou | 6-3,6-1 |