Round: 25 Ground: Grass
| Challenger - Todi | 2015/07/07 13:00 | Niels Desein v Mathias Bourgue | 5-7,1-6 |
| ITF - Niederlande F3 | 2015/07/02 10:00 | Niels Desein v Maverick Banes | 6-7,2-6 |
| ITF - Niederlande F3 | 2015/07/01 10:00 | Niels Desein v Jack Jaede | 6-4,6-2 |
| ITF - Niederlande F3 | 2015/06/30 17:55 | Niels Desein v Mats Hermans | 6-4,6-2 |
| Wimbledon - Qualifikation | 2015/06/22 16:10 | Enzo Couacaud v Niels Desein | 6-4,6-4 |
| Challenger - Bordeaux | 2015/05/12 10:45 | Paul-Henri Mathieu v Niels Desein | 7-6,3-6,6-3 |
| Challenger - Cali 2 | 2015/05/07 17:30 | Fernando Romboli v Niels Desein | 4-6,7-6,6-2 |
| Challenger - Cali 2 | 2015/05/05 17:50 | Nicolas Santos v Niels Desein | 1-6,2-6 |
| Wimbledon | 2015/06/29 14:25 | Lukas Lacko v Steve Johnson | 3-6,7-6,6-4,1-6,4-6 |
| ATP - Halle | 2015/06/15 13:50 | Alejandro Falla v Lukas Lacko | 6-4,3-6,6-1 |
| ATP - Halle - Qualifikation | 2015/06/14 11:30 | Lukas Lacko v Jürgen Melzer | 4-6,6-3,7-5 |
| ATP - Halle - Qualifikation | 2015/06/13 13:50 | Lukas Lacko v Peter Gojowczyk | 7-6,3-6,6-4 |
| ATP - Miami - Qualifikation | 2015/03/23 19:30 | Lukas Lacko v Denis Kudla | 6-7,6-4,7-5 |
| Challenger - Drummondville | 2015/03/19 15:00 | Lukas Lacko v Kevin King | 4-6,6-4,4-6 |
| Challenger - Drummondville | 2015/03/17 17:05 | Lukas Lacko v Adam El Mihdawy | 7-5,6-4 |
| Davis Cup | 2015/03/08 12:45 | Lukas Lacko v Mike Urbanija | 6-3,6-2 |