Round: 44 Ground: Hardcourt outdoor
| ITF Portugal F5 Qual | 2018/03/18 11:30 | Moura, Hugo v Stepanov Zyabtchenko, Felipe | 3-6,0-6 |
| ITF Spain F6 Qual | 2018/03/11 08:00 | Tashi, Vullnet v Stepanov Zyabtchenko, Felipe | 6-4,6-4 |
| ITF Spain F6 Qual | 2018/03/10 08:00 | Stepanov Zyabtchenko, Felipe v Vicente Martinez, Carlos | 3-6,6-0,6-4 |
| ITF Portugal F2 Qual | 2018/02/25 13:00 | Bourcet, Tony v Stepanov Zyabtchenko, Felipe | 7-6,7-6 |
| ITF Portugal F2 Qual | 2018/02/24 15:30 | Montalvo Hidalgo, Manuel v Stepanov Zyabtchenko, Felipe | 4-6,2-6 |
| ITF Portugal F1 | 2018/02/17 12:30 | Stepanov Zyabtchenko, Felipe v van Der Horst, Tim | 1-6,7-6,4-6 |
| ITF Spain F5 | 2018/02/10 13:30 | Garcia Garcia, Juan Carlos v Stepanov Zyabtchenko, Felipe | 6-4,7-6 |
| ITF Spain F33 | 2017/10/07 14:00 | Stepanov Zyabtchenko, Felipe v Sanchez Herrero, David | 6-7,3-6 |
| ITF Portugal F3 | 2018/03/07 10:30 | Fermin Tenti v Mardones, Bruno | 6-4,6-4 |
| ITF Portugal F1 | 2018/02/21 12:40 | Cacao, Tiago v Mardones, Bruno | 6-4,6-1 |
| ITF Portugal F1 | 2018/02/19 16:00 | Mardones, Bruno v Manrique-Velazquez, Diego-Jose | 2-6,3-6 |
| ITF Portugal F1 | 2018/02/18 13:00 | Mardones, Bruno v Trapeznikov, Zakhar | 6-7,7-5,6-1 |
| ITF Spain F5 | 2018/02/12 11:00 | Andreu Garcia, Francisco v Mardones, Bruno | 6-2,6-3 |
| ITF Spain F5 | 2018/02/11 13:30 | Grace, Samy v Mardones, Bruno | 1-6,3-6 |
| ITF China F3 | 2018/01/22 05:45 | Manish Sureshkumar v Mardones, Bruno | 6-3,6-3 |
| ITF China F2 | 2018/01/17 05:20 | Mardones, Bruno v Kuan-Yi Lee | 0-6,4-6 |