Stadium: Court 1 Round: 46 Ground: Clay
| Challenger Vicenza Qual | 2018/05/26 08:00 | Luca Giacomini v Evgeny Karlovskiy | 6-2,2-6,7-6 |
| ITF Ukraine F2 | 2018/05/16 12:00 | Luca Giacomini v Jonas Merckx | 4-6,6-3,5-7 |
| ITF Ukraine F2 | 2018/05/15 12:35 | Luca Giacomini v Yan Bondarevskiy | 7-6,6-2 |
| ITF Ukraine F1 | 2018/05/12 09:00 | Alessandro Petrone v Luca Giacomini | 5-7,6-1,6-0 |
| ITF Ukraine F1 | 2018/05/11 07:00 | Luca Giacomini v Artem Smirnov | 6-1,6-3 |
| ITF Ukraine F1 | 2018/05/09 10:00 | Luca Giacomini v Sagadat Ayap | 6-4,6-3 |
| ITF Ukraine F1 | 2018/05/08 07:00 | Luca Giacomini v Vladyslav Orlov | 6-3,6-2 |
| ITF France F7 | 2018/04/18 09:00 | Alexis Gautier v Luca Giacomini | 3-6,7-6,6-4 |
| Challenger Vicenza Qual | 2018/05/26 08:00 | Fabien Reboul v Guilherme Clezar | 2-6,4-6 |
| French Open Qual | 2018/05/21 09:15 | Denis Kudla v Guilherme Clezar | 6-3,6-7,7-5 |
| Challenger Savannah | 2018/05/04 15:25 | Guilherme Clezar v Hugo Dellien | 7-5,4-6,6-7 |
| Challenger Savannah | 2018/05/02 14:30 | Enrique Lopez-Perez v Guilherme Clezar | 6-0,6-7,4-6 |
| Challenger Savannah | 2018/04/30 14:00 | Guilherme Clezar v Dominik Koepfer | 6-2,6-3 |
| Challenger Tallahassee | 2018/04/25 17:00 | Guilherme Clezar v Cristian Garin | 4-6,2-6 |
| Challenger Tallahassee | 2018/04/24 18:55 | Guilherme Clezar v Andrea Arnaboldi | 6-2,6-4 |
| Challenger Sarasota | 2018/04/20 16:00 | Guilherme Clezar v Reilly Opelka | 7-5,4-6,4-6 |