Stadium: Court 3 Round: 14 Ground: Hardcourt indoor
| Challenger Marbella | 2021/03/29 09:00 | Vit Kopriva v Eduard Esteve Lobato | 7-6,6-4 |
| Challenger Marbella | 2021/03/28 11:55 | Enrico Dalla Valle v Eduard Esteve Lobato | 3-6,4-6 |
| Challenger Gran Canaria | 2021/03/06 11:00 | Kimmer Coppejans v Eduard Esteve Lobato | 7-6,6-2 |
| Challenger Gran Canaria | 2021/03/05 13:55 | Eduard Esteve Lobato v Giulio Zeppieri | 6-4,5-7,6-4 |
| Challenger Gran Canaria | 2021/03/04 12:45 | Nikola Milojevic v Eduard Esteve Lobato | 5-7,3-6 |
| Challenger Gran Canaria | 2021/03/02 16:00 | Eduard Esteve Lobato v Guillermo Garcia-Lopez | 7-6,6-2 |
| Challenger Gran Canaria | 2021/03/01 11:00 | Sandro Ehrat v Eduard Esteve Lobato | 3-6,6-2,6-7 |
| Challenger Gran Canaria Qual | 2021/02/28 13:00 | Harri Heliovaara v Eduard Esteve Lobato | 2-6,4-6 |
| ITF M25 Biel | 2021/03/30 13:50 | Adrian Andreev v Tim Van Rijthoven | 3-6,1-6 |
| Challenger Lille | 2021/03/21 09:00 | Adrian Andreev v Christopher Heyman | 4-6,6-3,3-6 |
| Davis Cup | 2021/03/05 15:10 | Adrian Andreev v Gerardo L Villasenor | 6-3,1-6,2-6 |
| ATP Singapore | 2021/02/24 11:10 | Adrian Andreev v Alexei Popyrin | 1-6,7-5,3-6 |
| ATP Singapore | 2021/02/22 06:20 | Lloyd Harris v Adrian Andreev | 6-1,3-6,4-6 |
| Challenger Biella | 2021/02/09 10:10 | Adrian Andreev v Matthias Bachinger | 2-6,5-7 |
| ITF M15 Antalya | 2021/01/17 09:00 | Adrian Andreev v Alexander Shevchenko | 6-1,7-6 |
| ITF M15 Antalya | 2021/01/16 08:45 | Alex M Pujolras v Adrian Andreev | 5-7,2-6 |