Stadium: Court 4 Round: 26 Ground: Hardcourt indoor
| ITF M15 Singapore | 2024/09/11 05:05 | Credit Chaiyarin v Guillermo Olaso | 4-6,3-6 |
| ITF M15 Singapore | 2024/09/08 05:30 | Guillermo Olaso v Anirudh Rao | 6-1,6-2 |
| ITF Lebanon F1 | 2018/09/29 13:00 | Alexandre Muller v Guillermo Olaso | 4-6,6-3,6-0 |
| ITF Lebanon F1 | 2018/09/28 13:00 | Guillermo Olaso v Edoardo Eremin | 6-1,6-4 |
| ITF Lebanon F1 | 2018/09/27 13:00 | Guillermo Olaso v Hasan Ibrahim | 6-2,6-4 |
| ITF Lebanon F1 | 2018/09/26 14:35 | Guillermo Olaso v Jaroslav Pospisil | 6-1,6-1 |
| ITF Germany F8 | 2018/07/19 11:35 | Orlando Luz v Guillermo Olaso | 7-6,6-0 |
| ITF Germany F8 | 2018/07/18 11:25 | Lucas Gerch v Guillermo Olaso | 2-6,3-6 |
| ITF M15 Singapore | 2024/09/10 02:00 | Taiyo Yamanaka v Leo Vithoontien | 2-6,4-6 |
| ITF M25 Nakhon Si Thammarat | 2024/09/03 03:40 | Yurii Dzhavakian v Leo Vithoontien | 7-5,4-6,7-5 |
| ITF M25 Nakhon Si Thammarat | 2024/08/27 02:00 | Leo Vithoontien v Pawit Sornlaksup | 3-6,0-6 |
| ITF M15 Huntsville | 2024/08/17 15:00 | Leo Vithoontien v Tyler Zink | 4-6,1-6 |
| ITF M15 Huntsville | 2024/08/16 15:00 | Leo Vithoontien v Aleksa Ciric | 6-4,2-6,6-4 |
| ITF M15 Huntsville | 2024/08/15 15:00 | Colin Sinclair v Leo Vithoontien | 6-7,6-4,5-7 |
| ITF M15 Huntsville | 2024/08/14 15:40 | Vincent Rettke v Leo Vithoontien | 3-6,0-6 |
| ITF M15 Huntsville | 2024/08/13 14:00 | Matt Kuhar v Leo Vithoontien | 3-6,6-2,4-6 |