Stadium: Centre Court Round: 25 Ground: Hardcourt outdoor
| ATP Indian Wells | 2021/10/06 20:00 | Altug Celikbilek v Joao Sousa | 3-6,5-7 |
| ATP Indian Wells | 2021/10/05 18:00 | Altug Celikbilek v Thomas Fabbiano | 2-6,6-2,6-1 |
| ATP Sofia | 2021/09/27 10:10 | Egor Gerasimov v Altug Celikbilek | 7-6,6-3 |
| ATP Sofia | 2021/09/26 12:40 | Altug Celikbilek v Daniel Elahi Galan | 7-6,4-6,7-5 |
| Davis Cup | 2021/09/18 08:00 | Altug Celikbilek v Robert Strombachs | 7-6,6-4 |
| Challenger Cassis | 2021/09/09 09:55 | Luca Van Assche v Altug Celikbilek | 6-3,6-7,6-3 |
| Challenger Cassis | 2021/09/06 14:10 | Altug Celikbilek v Gregoire Barrere | 6-3,6-3 |
| Challenger Saint-Tropez | 2021/08/30 14:15 | Thomas Fabbiano v Altug Celikbilek | 7-6,7-6 |
| Challenger Napoli Qual | 2021/10/10 16:40 | Alexander Ritschard v Arjun Kadhe | 6-3,6-3 |
| Challenger Rennes | 2021/09/12 11:35 | Manuel Guinard v Arjun Kadhe | 6-4,1-6,6-3 |
| Challenger Amersfoort | 2021/07/11 11:40 | Jeremy Jahn v Arjun Kadhe | 6-2,6-7,6-4 |
| ITF M15 New Delhi | 2021/04/01 06:25 | Arjun Kadhe v Alexander Kotzen | 0-6,4-6 |
| ITF M15 New Delhi | 2021/03/31 04:00 | Arjun Kadhe v Dominik Palan | 6-3,6-4 |
| ITF M15 Pune | 2021/03/26 06:00 | Oliver Crawford v Arjun Kadhe | 6-3,7-6 |
| ITF M15 Pune | 2021/03/25 07:40 | Dominik Palan v Arjun Kadhe | 6-1,6-7,6-7 |
| ITF M15 Pune | 2021/03/24 06:10 | S D Prajwal Dev v Arjun Kadhe | 3-6,6-7 |