Stadium: Court 9 Round: 15 Ground: Clay
| ATP Munich | 2021/04/25 10:00 | Norbert Gombos v Daniel Elahi Galan | 3-6,4-6 |
| ATP Munich | 2021/04/24 11:00 | Mischa Zverev v Daniel Elahi Galan | 3-6,3-6 |
| ATP Belgrade | 2021/04/18 15:10 | Hamad Medjedovic v Daniel Elahi Galan | 7-6,7-6 |
| Challenger Belgrade | 2021/04/12 13:50 | Daniel Elahi Galan v Sebastian Ofner | 5-7,6-3,4-6 |
| ATP Miami | 2021/03/29 21:25 | Daniel Elahi Galan v Lorenzo Sonego | 6-7,3-6 |
| ATP Miami | 2021/03/27 18:10 | Alex De Minaur v Daniel Elahi Galan | 6-4,3-6,4-6 |
| ATP Miami | 2021/03/25 22:00 | Daniel Elahi Galan v Thiago Seyboth Wild | 6-3,6-4 |
| ATP Acapulco | 2021/03/17 04:50 | Casper Ruud v Daniel Elahi Galan | 6-4,6-1 |
| Challenger Salinas | 2021/04/26 14:30 | Altug Celikbilek v Nicolas Mejia | 3-6,5-7 |
| Challenger Salinas | 2021/04/23 15:00 | Tim Van Rijthoven v Altug Celikbilek | 3-6,6-2,6-7 |
| Challenger Salinas | 2021/04/22 15:00 | Roberto Ortega-Olmedo v Altug Celikbilek | 6-1,4-6,4-6 |
| Challenger Salinas | 2021/04/20 17:15 | JC Aragone v Altug Celikbilek | 2-6,6-7 |
| Challenger Orlando | 2021/04/14 18:15 | Jenson Brooksby v Altug Celikbilek | 6-3,6-1 |
| Challenger Orlando | 2021/04/13 16:05 | Thai-Son Kwiatkowski v Altug Celikbilek | 2-6,3-6 |
| Challenger Orlando | 2021/04/12 20:30 | Altug Celikbilek v Jesper De Jong | 6-4,6-2 |
| Challenger Orlando | 2021/04/12 15:30 | Altug Celikbilek v Shuichi Sekiguchi | 4-6,6-4,7-5 |