Stadium: Court 1 Round: 27 Ground: Clay
| Challenger Banja Luka | 2018/09/13 13:30 | Laurynas Grigelis v Thomaz Bellucci | 2-6,7-6,6-3 |
| Challenger Banja Luka | 2018/09/11 12:30 | Marco Trungelliti v Laurynas Grigelis | 3-6,3-6 |
| Challenger Seville | 2018/09/06 21:00 | Pedja Krstin v Laurynas Grigelis | 2-6,6-3,6-4 |
| Challenger Seville | 2018/09/05 18:30 | Alejandro Davidovich Fokina v Laurynas Grigelis | 5-7,6-0,4-6 |
| Challenger Seville | 2018/09/04 10:10 | Laurynas Grigelis v Ramkumar Ramanathan | 6-4,6-2 |
| Challenger Seville | 2018/09/03 08:30 | Laurynas Grigelis v Bernabe Zapata Miralles | 6-3,4-6,6-3 |
| Challenger Seville | 2018/09/02 10:00 | Laurynas Grigelis v Tomas Barrios Vera | 6-3,6-4 |
| Challenger Seville | 2018/09/01 11:10 | Laurynas Grigelis v Jordan Correia | 6-0,4-6,6-0 |
| Challenger Banja Luka | 2018/09/13 08:30 | Dimitar Kuzmanov v Alessandro Giannessi | 6-2,2-6,2-6 |
| Challenger Banja Luka | 2018/09/11 11:05 | Alessandro Giannessi v Andrej Martin | 6-4,4-6,6-4 |
| Challenger Seville | 2018/09/03 18:30 | Alejandro Davidovich Fokina v Alessandro Giannessi | 6-7,6-4,7-6 |
| Challenger Como | 2018/08/27 15:30 | Martin Klizan v Alessandro Giannessi | 6-2,6-4 |
| US Open | 2018/08/21 19:05 | Alessandro Giannessi v Constant Lestienne | 3-6,2-6 |
| Challenger Scheveningen | 2018/07/20 17:35 | Alessandro Giannessi v Thiemo De Bakker | 6-3,6-7,4-6 |
| Challenger Scheveningen | 2018/07/18 10:30 | Dustin Brown v Alessandro Giannessi | 6-4,2-6,3-6 |
| Challenger Scheveningen | 2018/07/16 11:30 | Alessandro Giannessi v Tsung-Hua Yang | 3-6,6-1,6-3 |