Stadium: Hard Court 4 Round: 44 Ground: Hardcourt outdoor
| Challenger Bratislava Qual | 2017/11/05 09:00 | Danylo Kalenichenko v Marc Sieber | 7-6,6-3 |
| Challenger Bratislava Qual | 2017/11/04 09:00 | Altug Celikbilek v Marc Sieber | 7-5,1-6,0-6 |
| Challenger Eckental Qual | 2017/10/30 11:20 | Robin Kern v Marc Sieber | 6-4,6-2 |
| Challenger Eckental Qual | 2017/10/29 16:10 | Nikola Cacic v Marc Sieber | 2-6,6-3,1-6 |
| Challenger Eckental Qual | 2017/10/28 17:10 | Andriej Kapas v Marc Sieber | 6-4,4-6,3-6 |
| Challenger Brest Qual | 2017/10/22 14:45 | Andrea Arnaboldi v Marc Sieber | 1-6,6-3,6-3 |
| Challenger Brest Qual | 2017/10/21 10:55 | David Vega Hernandez v Marc Sieber | 2-6,4-6 |
| Challenger Ortisei | 2017/10/13 13:40 | Pierre-Hugues Herbert v Marc Sieber | 7-6,3-6,6-3 |
| ITF Turkey F1 | 2018/01/06 08:00 | Vincentiu A Niculescu v Masayoshi Ono | 2-6,1-6 |
| ITF Australia F6 | 2017/09/30 01:00 | Patrick Rynsaardt v Masayoshi Ono | 4-6,4-6 |
| ITF Australia F5 Qual | 2017/09/23 00:00 | Masayoshi Ono v Michael Look | 2-6,6-4,3-6 |
| ITF Netherlands F7 | 2017/08/29 12:00 | Paul Monteban v Masayoshi Ono | 4-6,6-2,7-5 |
| ITF Netherlands F7 | 2017/08/26 08:00 | Varun Venkat v Masayoshi Ono | 3-6,1-6 |
| ITF Netherlands F7 | 2017/08/26 08:00 | Arnd Weyhausen v Masayoshi Ono | 4-6,3-6 |
| ITF Guam F1 | 2017/06/20 06:00 | Hiroyasu Ehara v Masayoshi Ono | 6-2,6-4 |
| ITF Guam F1 | 2017/06/17 00:00 | Masayoshi Ono v Derek Okuhama | 6-0,6-1 |