Stadium: Court 2 Round: 46
| Challenger Busan Qual | 2018/05/12 01:00 | Thomas Fancutt v Christopher Rungkat | 6-3,6-4 |
| Challenger Gimcheon Qual | 2018/05/05 04:20 | Seong Chan Hong v Thomas Fancutt | 2-6,7-5,6-4 |
| Challenger Seoul Qual | 2018/04/29 03:10 | Yosuke Watanuki v Thomas Fancutt | 6-3,6-0 |
| Challenger Seoul Qual | 2018/04/28 01:30 | Thomas Fancutt v Jaewoo Kim | 6-2,6-3 |
| Challenger Taipei | 2018/04/10 04:00 | Ramkumar Ramanathan v Thomas Fancutt | 7-6,6-7,6-2 |
| Challenger Taipei Qual | 2018/04/09 03:00 | Thomas Fancutt v Mukund Sasikumar | 7-6,3-6,6-4 |
| Challenger Taipei Qual | 2018/04/08 04:20 | Antoine Escoffier v Thomas Fancutt | 3-6,6-2,2-6 |
| Challenger Taipei Qual | 2018/04/07 03:55 | Thomas Fancutt v Luca Margaroli | 7-5,7-5 |
| Challenger Busan Qual | 2018/05/12 01:00 | Jae Hwan Kim v Guillermo Olaso | 0-6,5-7 |
| Challenger Glasgow | 2018/05/04 09:30 | Lukas Lacko v Guillermo Olaso | 6-2,6-3 |
| Challenger Glasgow | 2018/05/02 13:50 | Guillermo Olaso v Lloyd Glasspool | 6-4,6-3 |
| Challenger Glasgow | 2018/04/30 11:15 | Evgeny Karlovskiy v Guillermo Olaso | 6-7,3-6 |
| ITF Spain F9 | 2018/04/19 14:00 | Guillermo Olaso v Steven Diez | 7-6,1-6,5-7 |
| ITF Spain F9 | 2018/04/17 09:25 | Guillermo Olaso v Adrien Bossel | 6-2,6-4 |
| Challenger Alicante Qual | 2018/03/31 09:55 | Carlos Gomez-Herrera v Guillermo Olaso | 2-6,7-6,7-5 |
| Challenger Marbella Qual | 2018/03/24 19:25 | Federico Gaio v Guillermo Olaso | 7-5,7-6 |