Stadium: Court 15 Round: 26 Ground: Hardcourt indoor
| ITF M25 Plaisir | 2020/09/16 12:00 | Mertens, Yannick v Barrientos, Nicolas | 1-6,6-2,6-3 |
| ITF M15 Faro | 2020/03/05 12:00 | Mertens, Yannick v Alberto Barroso Campos | 7-6,6-7,2-6 |
| ITF M15 Faro | 2020/03/04 10:00 | Mertens, Yannick v Dembek, Michal | 6-2,7-5 |
| ITF - M25 Sunderland | 2020/02/27 10:00 | Mertens, Yannick v Dan Added | 3-6,7-6,6-7 |
| ITF - M25 Sunderland | 2020/02/25 09:55 | Mertens, Yannick v Patten, Henry | 7-6,4-6,6-4 |
| Challenger - Koblenz | 2020/02/17 16:05 | Mirza Basic v Mertens, Yannick | 6-3,6-1 |
| ITF - M15 Grenoble | 2020/02/12 11:45 | Mertens, Yannick v Titouan Droguet | 7-6,4-6,4-6 |
| ITF - M15 Veigy-Foncenex | 2020/01/28 13:55 | Alexis Gautier v Mertens, Yannick | 6-2,7-6 |
| ITF M25 Plaisir | 2020/09/16 13:45 | Rodriguez, Cristian v Pedro Sakamoto | 2-6,6-7 |
| ATP - Santiago | 2020/02/23 17:20 | Horansky, Filip v Pedro Sakamoto | 7-6,6-7,6-4 |
| ATP - Santiago | 2020/02/22 18:20 | Romboli, Fernando v Pedro Sakamoto | 1-6,2-6 |
| Challenger - Morelos | 2020/02/18 17:45 | Polansky, Peter v Pedro Sakamoto | 6-4,6-2 |
| Challenger - Morelos | 2020/02/17 21:30 | Pedro Sakamoto v Gomez-Herrera, Carlos | 7-6,6-2 |
| ITF M25 Lima | 2020/02/15 15:00 | Pedro Sakamoto v Arguello, Facundo | 6-3,4-6,3-6 |
| ITF M25 Lima | 2020/02/14 17:25 | Pedro Sakamoto v Gonzalo Villanueva | 6-3,6-4 |
| ITF M25 Lima | 2020/02/13 14:30 | Pedro Sakamoto v Camilo Ugo Carabelli | 6-3,7-6 |