Stadium: Court 3 Round: 26 Ground: Clay
| ITF M15 Antalya | 2021/05/05 08:25 | Jeroen Vanneste v Yanki Erel | 7-6,5-7,5-7 |
| ITF M15 St Petersburg | 2021/04/18 08:55 | Savriyan Danilov v Yanki Erel | 1-6,4-6 |
| ITF M15 St Petersburg | 2021/04/17 09:45 | Matic Spec v Yanki Erel | 6-7,2-6 |
| ITF M15 St Petersburg | 2021/04/16 09:30 | Yanki Erel v Sarp Agabigun | 6-4,6-1 |
| ITF M15 St Petersburg | 2021/04/15 12:00 | Patrik Rikl v Yanki Erel | 3-6,5-7 |
| ITF M15 St Petersburg | 2021/04/14 07:00 | Yanki Erel v Alexander Cozbinov | 7-6,7-6 |
| ITF M15 St Petersburg | 2021/04/09 10:50 | Illya Beloborodko v Yanki Erel | 7-6,2-6,6-3 |
| ITF M15 St Petersburg | 2021/04/08 11:15 | Yanki Erel v Konstantin Kravchuk | 6-4,6-1 |
| ITF M15 Antalya | 2021/05/05 07:00 | Sandro Kopp v Edoardo Eremin | 6-4,6-3 |
| ITF M15 Antalya | 2021/05/04 07:00 | Orlando Luz v Sandro Kopp | 6-1,6-2 |
| ITF M15 Antalya | 2021/05/03 07:00 | Mattia Rossi v Sandro Kopp | 1-6,1-6 |
| ITF M15 Antalya | 2021/04/17 07:20 | Sandro Kopp v Nicolae Frunza | 3-6,1-6 |
| ITF M15 Antalya | 2021/04/16 07:00 | Sandro Kopp v Matteo Arnaldi | 7-6,2-6,6-3 |
| ITF M15 Antalya | 2021/04/15 08:35 | Karl Friberg v Sandro Kopp | 2-6,5-7 |
| ITF M15 Antalya | 2021/04/13 07:00 | Sandro Kopp v Peter Fajta | 6-2,7-6 |
| ITF M15 Antalya | 2021/04/07 08:20 | Pablo Llamas Ruiz v Sandro Kopp | 7-5,6-4 |