| ITF M25 Koksijde | 08/14 09:50 | 54 | Thiemo De Bakker v Giacomo Crisostomo | 6-1,6-2 | |
| ITF M25 Koksijde | 08/13 08:00 | 54 | Thiemo De Bakker v Ilian Borlee | 6-3,6-0 | |
| ITF M25 The Hague | 07/06 17:00 | 26 | Thiemo De Bakker v Deney Wassermann | 6-7,6-1,4-6 | |
| ITF M25 The Hague | 07/05 16:55 | 25 | Kyvan Rietkerk v Thiemo De Bakker | 2-6,2-6 | |
| ITF M15 Jakarta | 06/30 02:00 | 27 | Thiemo De Bakker v Siddhant Banthia | Retired | |
| ITF M15 Jakarta | 06/29 03:25 | 26 | Karan Singh v Thiemo De Bakker | 5-7,6-7 | |
| ITF M15 Jakarta | 06/28 02:00 | 25 | David Agung Susanto v Thiemo De Bakker | 5-7,4-6 | |
| ITF M15 Jakarta | 06/22 02:00 | 26 | Thiemo De Bakker v Shuichi Sekiguchi | Retired | |
| ITF M15 Jakarta | 06/21 02:00 | 25 | Anthony Susanto v Thiemo De Bakker | 4-6,3-6 | |
| ITF M15 Meerbusch | 04/26 16:00 | 25 | Thiemo De Bakker v Tim Handel | 6-3,6-7,4-6 | |
| ITF M25 Palmanova | 03/22 11:30 | 25 | Pablo Llamas Ruiz v Thiemo De Bakker | 6-3,7-5 | |
| ITF M25 Palmanova | 03/16 08:30 | 26 | Alex M Pujolras v Thiemo De Bakker | 6-1,6-3 | |
| ITF M25 Palmanova | 03/15 09:55 | 25 | Gabriele Piraino v Thiemo De Bakker | 4-6,6-7 | |
| ITF M15 Porec | 03/08 14:30 | 25 | Thiemo De Bakker v Damien Wenger | 6-1,4-6,3-6 | |
| ITF M25 Nussloch | 01/25 18:35 | 25 | Thiemo De Bakker v Dominik Recek | 3-6,4-6 | |
| ITF M25 Santa Margherita | 09/22 12:00 | 29 | [461] Lucas Gerch v Thiemo De Bakker [318] | 2-6,4-6 | |
| ITF M25 Santa Margherita | 09/21 12:00 | 28 | Thiemo De Bakker v Matteo Gigante | 6-1,6-4 | |
| ITF M25 Santa Margherita | 09/20 12:00 | 27 | [318] Thiemo De Bakker v Wilson Leite [327] | 5-7,6-2,6-4 | |
| ITF M25 Santa Margherita | 09/19 12:00 | 26 | [318] Thiemo De Bakker v Nicolo Turchetti [417] | 6-3,6-1 | |
| ITF M25 Santa Margherita | 09/17 16:05 | 25 | Thiemo De Bakker v Alexis Gautier | 6-3,7-5 | |
| ITF M25 Trieste | 09/03 17:30 | 25 | Thiemo De Bakker v Peter Heller | 3-6,6-2,4-6 | |
| ITF M25 Trieste | 09/03 13:30 | - | [315] Thiemo De Bakker v Peter Heller [361] | 3-6,6-2,4-6 | |
| Challenger - Meerbusch | 08/13 08:00 | 24 | [314] Thiemo De Bakker v Adam Pavlasek [382] | 6-7,3-6 | |
| Challenger Amersfoort | 07/16 16:35 | 25 | [265] Thiemo De Bakker v Jan Choinski [287] | 2-6,7-5,2-6 | |
| Challenger Braunchsweig | 07/07 10:10 | 24 | [223] Lucas Miedler v Thiemo De Bakker [265] | 6-4,7-6 | |
| Challenger Ludwigshafen | 07/03 14:55 | 25 | [265] Thiemo De Bakker v Constant Lestienne [199] | 3-6,4-6 | |
| Challenger Ludwigshafen | 07/02 09:00 | 24 | [394] Sandro Ehrat v Thiemo De Bakker [265] | 4-6,4-6 | |
| Wimbledon | 06/24 15:55 | 44 | [104] Dennis Novak v Thiemo De Bakker [242] | 6-4,6-3 | |
| ATP s-Hertogenbosch | 06/11 12:55 | 25 | [224] Thiemo De Bakker v Adrian Mannarino [44] | 2-6,1-6 | |
| Challenger - Prostejov | 06/03 14:05 | 25 | [307] Marcelo Arevalo v Thiemo De Bakker [229] | 7-5,6-4 |