Stadium: Centre Court Round: 26 Ground: Clay
| Challenger Banja Luka | 2018/09/11 12:30 | Marco Trungelliti v Grigelis, Laurynas | 3-6,3-6 |
| Challenger Seville | 2018/09/06 21:00 | Krstin, Pedja v Grigelis, Laurynas | 2-6,6-3,6-4 |
| Challenger Seville | 2018/09/05 18:30 | Alejandro Davidovich Fokina v Grigelis, Laurynas | 5-7,6-0,4-6 |
| Challenger Seville | 2018/09/04 10:10 | Grigelis, Laurynas v Ramkumar Ramanathan | 6-4,6-2 |
| Challenger Seville | 2018/09/03 08:30 | Grigelis, Laurynas v Bernabe Zapata Miralles | 6-3,4-6,6-3 |
| Challenger Seville | 2018/09/02 10:00 | Grigelis, Laurynas v Tomas Barrios Vera | 6-3,6-4 |
| Challenger Seville | 2018/09/01 11:10 | Grigelis, Laurynas v Jordan Correia Passos Do Carmo | 6-0,4-6,6-0 |
| Cordenons, Italy | 2018/08/14 08:00 | Andrea Pellegrino v Grigelis, Laurynas | 6-7,6-2,6-4 |
| Challenger Banja Luka | 2018/09/11 13:05 | Bellucci, Thomaz v Pedro Cachin | 7-6,6-1 |
| Genoa, Italy | 2018/09/08 18:40 | Brown, Dustin v Bellucci, Thomaz | 6-3,7-6 |
| Genoa, Italy | 2018/09/07 17:15 | Cristian Garin v Bellucci, Thomaz | 6-7,4-6 |
| Genoa, Italy | 2018/09/04 11:15 | Bellucci, Thomaz v Gian Marco Moroni | 7-6,6-3 |
| Genoa, Italy | 2018/09/03 09:10 | Bellucci, Thomaz v Zsombor Piros | 6-3,4-6,4-6 |
| Genoa, Italy | 2018/09/02 14:45 | Bellucci, Thomaz v Andrea Guerrieri | 6-1,4-6,6-3 |
| Genoa, Italy | 2018/09/02 07:00 | Bellucci, Thomaz v Virgili, Adelchi | 6-2,6-4 |
| Challenger Como | 2018/08/26 13:55 | Brown, Dustin v Bellucci, Thomaz | 6-3,6-4 |