Stadium: Serena Wines 1881 Round: 26 Ground: Clay
| Challenger San Benedetto | 2018/07/17 10:00 | Nikola Milojevic v de Greef, Arthur | 6-4,7-5 |
| Braunchsweig, Germany | 2018/07/13 13:00 | Jozef Kovalik v de Greef, Arthur | 6-2,6-3 |
| Braunchsweig, Germany | 2018/07/12 12:15 | de Greef, Arthur v Hugo Dellien | 6-4,6-1 |
| Braunchsweig, Germany | 2018/07/11 09:00 | de Greef, Arthur v Dutra Silva, Rogerio | 6-4,7-6 |
| Braunchsweig, Germany | 2018/07/09 14:55 | Mayer, Florian (1983) v de Greef, Arthur | 6-7,6-2,2-6 |
| Wimbledon Qual | 2018/06/25 15:40 | de Greef, Arthur v Jason Kubler | 1-6,2-6 |
| Challenger Poprad Tatry | 2018/06/23 12:30 | Jozef Kovalik v de Greef, Arthur | 6-4,6-0 |
| Challenger Poprad Tatry | 2018/06/22 12:00 | Balazs, Attila v de Greef, Arthur | 1-6,3-6 |
| Challenger Padova | 2018/07/24 15:15 | Pavic, Ante v Quinzi, Gianluigi | 7-6,6-4 |
| Challenger San Benedetto | 2018/07/20 15:00 | Pavic, Ante v Carlos Taberner | 4-6,4-6 |
| Challenger San Benedetto | 2018/07/19 15:00 | Gimeno-Traver, Daniel v Pavic, Ante | 6-4,1-6,4-6 |
| Challenger San Benedetto | 2018/07/17 12:05 | Andrea Pellegrino v Pavic, Ante | 3-6,4-6 |
| Challenger - Perugia | 2018/07/11 09:00 | Pavic, Ante v Salvatore Caruso | 4-6,7-6,3-6 |
| Challenger Perugia Qual | 2018/07/09 12:40 | Pavic, Ante v Petrone, Alessandro | 2-6,7-6,6-4 |
| Challenger Perugia Qual | 2018/07/09 08:00 | Pavic, Ante v Delic, Mate | 6-2,6-4 |
| Challenger Perugia Qual | 2018/07/08 10:20 | Pavic, Ante v Bortolotti, Marco | 6-3,6-3 |