Stadium: Center Court Round: 25 Ground: Clay
| Challenger Split | 2020/09/29 09:00 | Tomas Martin Etcheverry v Altug Celikbilek | 6-4,6-0 |
| Challenger Split | 2020/09/27 10:50 | Mathias Bourgue v Altug Celikbilek | 5-7,6-4,0-6 |
| Challenger Split | 2020/09/26 15:50 | Altug Celikbilek v Mukund Sasikumar | 6-1,6-3 |
| German Masters | 2020/08/28 08:55 | Altug Celikbilek v Peter Torebko | 4-6,4-6 |
| German Premier League | 2020/08/27 11:35 | Altug Celikbilek v Inigo C Huegun | 4-6,7-5,6-4 |
| German Premier League | 2020/08/26 13:35 | Altug Celikbilek v Daniil Glinka | 3-6,6-4,6-2 |
| German Premier League | 2020/08/25 15:50 | Altug Celikbilek v Karlo Cubelic | 6-3,7-6 |
| German Premier League | 2020/08/24 13:25 | Altug Celikbilek v Sebastian Gima | 6-0,6-4 |
| ITF M25 Jablonec Nad Nisou | 2020/09/22 10:55 | Goncalo Oliveira v Jesper De Jong | 2-6,6-7 |
| ITF M25 Prague | 2020/09/16 13:05 | Robin Stanek v Goncalo Oliveira | 6-3,6-1 |
| Challenger Prostejov | 2020/09/05 13:20 | Dmitry Popko v Goncalo Oliveira | 6-4,6-4 |
| Challenger Prague 2 | 2020/08/25 12:40 | Stan Wawrinka v Goncalo Oliveira | 6-3,6-4 |
| Challenger Prague 2 | 2020/08/23 10:15 | Goncalo Oliveira v Malek Jaziri | 6-4,6-4 |
| Challenger Prague 2 | 2020/08/22 08:30 | Goncalo Oliveira v Toby Alex Kodat | 6-4,6-4 |
| ITF M15 Cancun | 2020/03/12 14:00 | Goncalo Oliveira v Shintaro Mochizuki | 6-4,5-7,6-1 |
| ITF M15 Cancun | 2020/03/11 19:05 | Goncalo Oliveira v Ishaan Ravichander | 6-3,6-0 |