Stadium: Court 5 Round: 25 Ground: Hardcourt outdoor
| ATP Stuttgart Qual | 2018/06/09 11:00 | Youzhny, Mikhail v Guez, David | 6-2,6-3 |
| Challenger Loughborough | 2018/05/24 09:30 | Lucas Miedler v Guez, David | 6-4,6-2 |
| Challenger Loughborough | 2018/05/22 12:30 | Nielsen, Frederik v Guez, David | 2-6,4-6 |
| Tunisia F18, Singles Qualifying | 2018/05/13 09:00 | Guez, David v Artunedo Martinav. | 6-1,6-1 |
| Tunisia F18, Singles Qualifying | 2018/05/12 09:00 | Guez, David v Moez Echargui | 6-1,7-5 |
| Tunisia F18, Singles Qualifying | 2018/05/11 11:00 | Guez, David v Hidalgo, Diego | 6-4,6-2 |
| Tunisia F18, Singles Qualifying | 2018/05/10 09:00 | Guez, David v Mladenov, Vasko | 6-1,6-4 |
| Tunisia F18, Singles Qualifying | 2018/05/09 11:05 | Guez, David v Lawrence Bataljin | 6-3,6-2 |
| Challenger Almaty | 2018/06/15 05:00 | Krstin, Pedja v Lopez Perez | 6-1,6-3 |
| Challenger Almaty | 2018/06/14 06:35 | Yang, Tsung-Hua v Lopez Perez | 5-7,3-6 |
| Challenger Almaty | 2018/06/13 08:25 | Lopez Perez v Ignatik, Uladzimir | 6-3,6-0 |
| Challenger Almaty | 2018/06/11 06:25 | Yasutaka Uchiyama v Lopez Perez | 7-5,3-6,2-6 |
| Shymkent 2, Kazakhstan | 2018/06/05 06:10 | Grigelis, Laurynas v Lopez Perez | 6-3,7-5 |
| Challenger Vicenza | 2018/05/29 14:40 | Hugo Dellien v Lopez Perez | 6-0,5-7,6-0 |
| French Open Qual | 2018/05/22 10:25 | Lopez Perez v Stefano Travaglia | 4-6,3-6 |
| Challenger Heilbronn | 2018/05/15 10:00 | Lopez Perez v Rudolf Molleker | 4-6,3-6 |