Stadium: Clay 4 Round: 26 Ground: Clay
| ITF Turkey F31 | 2018/10/09 09:10 | Guttau, Niklas v Iordache, Sorin Andrei | 6-3,5-7,6-3 |
| ITF Turkey F31 | 2018/10/08 07:00 | Liska, Tomas v Guttau, Niklas | 4-6,6-2,2-6 |
| ITF Turkey F31 | 2018/10/07 07:00 | Wakita, Shunsuke v Guttau, Niklas | 4-6,3-6 |
| ITF Turkey F31 | 2018/10/06 07:00 | Guttau, Niklas v Myagkov, Dmitry | 6-2,6-3 |
| ITF Turkey F30 | 2018/10/02 07:00 | Vanneste, Jeroen v Guttau, Niklas | 6-2,6-3 |
| ITF Turkey F30 | 2018/10/01 07:30 | Guttau, Niklas v Vicentiu Andrei Niculescu | 6-3,6-0 |
| ITF Turkey F30 | 2018/09/30 07:30 | Besednikov, Oleg v Guttau, Niklas | 5-7,0-6 |
| ITF Turkey F30 | 2018/09/29 07:00 | Guttau, Niklas v Neil Oberleitner | 6-3,6-4 |
| ITF Turkey F31 | 2018/10/10 09:25 | Stevens, Bart v Ghilea, Vasile-Alexandru | 6-3,6-4 |
| ITF Turkey F31 | 2018/10/08 09:50 | Stevens, Bart v Giuseppe La Vela | 6-3,6-1 |
| ITF Turkey F31 | 2018/10/07 09:30 | Stevens, Bart v Vidak, Antun | 7-6,6-2 |
| ITF Turkey F31 | 2018/10/06 07:00 | Stevens, Bart v Krohn, Linus | 6-2,6-2 |
| ITF Switzerland F4 | 2018/08/28 09:25 | Elmar Ejupovic v Stevens, Bart | 7-5,6-2 |
| ITF Switzerland F4 | 2018/08/27 07:00 | Stevens, Bart v Nicolas Parizzia | 6-4,6-2 |
| ITF Netherlands F5 | 2018/08/20 11:05 | Sidane Pontjodikromo v Stevens, Bart | 6-4,4-6,6-3 |
| ITF Netherlands F4 | 2018/08/14 07:30 | Mariano Kestelboim v Stevens, Bart | 6-4,4-6,6-0 |