Stadium: Centre Court Round: 45
| Challenger Gimcheon Qual | 2018/05/05 02:50 | Jae Hwan Kim v Luke Saville | 2-6,7-6,2-6 |
| Challenger Seoul Qual | 2018/04/29 04:15 | Jae Hwan Kim v Jacob Grills | 6-4,2-6,4-6 |
| Challenger Seoul Qual | 2018/04/28 04:40 | Seung-Hun Shin v Jae Hwan Kim | 6-2,3-6,2-6 |
| ITF Thailand F12 Qual | 2017/12/11 04:45 | Billy Harris v Jae Hwan Kim | 6-4,6-4 |
| ITF Thailand F12 Qual | 2017/12/10 03:00 | Michael Commings v Jae Hwan Kim | 3-6,2-6 |
| ITF Thailand F11 Qual | 2017/12/04 04:40 | Ji Hoon Son v Jae Hwan Kim | 6-1,6-4 |
| ITF Thailand F11 Qual | 2017/12/03 03:00 | Pavle Daljev v Jae Hwan Kim | 1-6,6-7 |
| ITF Korea F5 | 2017/06/30 04:20 | Jae Hwan Kim v Ku Keon Kang | 6-2,1-6,7-6 |
| 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 |
| Challenger Lille | 2018/03/23 19:00 | Guillermo Olaso v Gregoire Barrere | 0-6,1-6 |