Stadium: Centre Court Round: 27
| Challenger Scheveningen | 2018/07/18 10:30 | Brown, Dustin v Alessandro Giannessi | 6-4,2-6,3-6 |
| Challenger Scheveningen | 2018/07/16 11:30 | Alessandro Giannessi v Yang, Tsung-Hua | 3-6,6-1,6-3 |
| Challenger Perugia | 2018/07/13 19:00 | Alessandro Giannessi v Salvatore Caruso | 6-4,4-6,4-6 |
| Challenger Perugia | 2018/07/12 11:00 | Brkic, Tomislav v Alessandro Giannessi | 1-6,2-6 |
| Challenger Perugia | 2018/07/10 16:55 | Arguello, Facundo v Alessandro Giannessi | 6-3,4-6,2-6 |
| Wimbledon Qual | 2018/06/28 10:00 | Alessandro Giannessi v Stefano Travaglia | 4-6,2-6,4-6 |
| Wimbledon Qual | 2018/06/26 15:50 | Zopp, Jurgen v Alessandro Giannessi | 3-6,7-6,11-13 |
| Wimbledon Qual | 2018/06/25 10:00 | Alessandro Giannessi v Petrovic, Danilo | 6-3,6-3 |
| Challenger Scheveningen | 2018/07/18 16:35 | Ignatik, Uladzimir v de Bakker, Thiemo | 4-6,6-7 |
| Challenger Scheveningen | 2018/07/17 14:00 | de Bakker, Thiemo v Pavlasek, Adam | 6-7,7-6,6-3 |
| Milan, Italy | 2018/06/30 13:00 | Laslo Djere v de Bakker, Thiemo | 7-6,4-6,7-5 |
| Milan, Italy | 2018/06/29 15:30 | de Bakker, Thiemo v Arnaboldi, Andrea | 3-6,6-1,6-4 |
| Milan, Italy | 2018/06/28 10:15 | de Bakker, Thiemo v Vilella Martinez, Mario | 6-4,2-6,6-2 |
| Milan, Italy | 2018/06/26 15:40 | Felix Auger Aliassime v de Bakker, Thiemo | 2-6,1-6 |
| Challenger Blois | 2018/06/23 12:30 | Felix Auger Aliassime v de Bakker, Thiemo | 7-6,3-6,6-1 |
| Challenger Blois | 2018/06/22 15:30 | de Bakker, Thiemo v Cristian Garin | 6-4,6-4 |