Stadium: Court 1 Round: 45 Ground: Hardcourt outdoor
| ITF - M15 Monastir | 2019/01/21 08:30 | Guenther, Valentin v Gostincar, Domen | 6-2,1-6,7-10 |
| ITF - M15 Monastir | 2019/01/21 08:30 | Guenther, Valentin v Gostincar, Domen | 6-2,1-6,7-10 |
| ITF Qatar F6 | 2018/12/18 07:00 | Zhurbin, Alexander v Guenther, Valentin | 3-6,6-3,6-2 |
| ITF Qatar F6 | 2018/12/17 14:35 | Cutuli, Domenico v Guenther, Valentin | 5-7,0-6 |
| ITF Qatar F6 | 2018/12/16 12:00 | Damian, Mihaita Daniel v Guenther, Valentin | 1-6,1-6 |
| Qatar F5, Simples | 2018/12/10 13:55 | Antoine Bellier v Guenther, Valentin | 4-6,6-1,6-2 |
| Qatar F5, Simples | 2018/12/09 13:50 | Helin, Erik v Guenther, Valentin | 3-6,1-6 |
| ITF Czech Republic F12 | 2018/11/28 11:35 | Peter Heller v Guenther, Valentin | 6-3,6-3 |
| ITF Czech Republic F12 | 2018/11/27 10:05 | Guenther, Valentin v Daniel Paty | 7-5,6-3 |
| ITF - M15 Monastir | 2019/01/21 12:00 | Gostincar, Domen v Desyatnik, Anton | 4-6,2-6 |
| ITF - M15 Monastir | 2019/01/21 08:30 | Guenther, Valentin v Gostincar, Domen | 6-2,1-6,7-10 |
| ITF Cameroon F2 | 2018/12/03 08:30 | Sharma, Arpit v Gostincar, Domen | 0-6,7-6,7-6 |
| ITF Cameroon F1 | 2018/11/29 08:30 | Gostincar, Domen v Skander Mansouri | 1-6,2-6 |
| ITF Cameroon F1 | 2018/11/28 08:30 | Gostincar, Domen v Babji Siva Atturu | 6-0,6-0 |
| ITF Cameroon F1 | 2018/11/25 11:00 | Stosic, Marko v Gostincar, Domen | 6-4,3-6,2-6 |
| ITF Greece F8 | 2018/11/10 07:30 | Dimitrov, Martin v Gostincar, Domen | 7-6,7-5 |
| ITF Greece F6 | 2018/10/30 10:25 | Pervolarakis, Michail v Gostincar, Domen | 6-4,6-0 |