Round: 26 Ground: Clay
| ITF Germany F12 | 2017/08/23 15:00 | Sieber, Marc v 링크, 조엘 빈센트 | 6-4,6-1 |
| Challenger Meerbusch | 2017/08/17 11:00 | Sieber, Marc v 마모운, 카림-모하메드 | 2-6,3-6 |
| Challenger Meerbusch | 2017/08/15 17:00 | 브라운, 더스틴 v Sieber, Marc | 2-6,2-6 |
| Meerbusch, Germany, Qualifying | 2017/08/14 09:30 | Sieber, Marc v 기메노-트라벨, 다니엘 | 7-5,6-3 |
| Meerbusch, Germany, Qualifying | 2017/08/13 12:55 | Sieber, Marc v 라자로브, 알렉산달 | 6-3,6-2 |
| Challenger Marburg Qual | 2017/07/02 10:20 | Sieber, Marc v 바친겔, 마티아스 | 2-6,7-6,3-6 |
| Challenger Marburg Qual | 2017/07/01 10:00 | Sieber, Marc v Naow, Amer | 6-1,6-2 |
| ITF Turkey F24 | 2017/06/25 08:00 | Sieber, Marc v 쿠즈마노브, 디미탈 | 3-6,6-2,1-6 |
| ITF Germany F12 | 2017/08/22 10:05 | 스첼, 니클라스 v Schmidt, Gabriel | 6-4,3-6,4-6 |
| ITF Germany F12 | 2017/08/21 08:00 | Schmidt, Gabriel v Buehler, Sebastian | 6-1,6-1 |
| ITF Austria F6 | 2017/08/06 09:40 | Xiviller, Nicolas v Schmidt, Gabriel | 6-3,6-3 |
| ITF Austria F6 | 2017/08/05 10:00 | 반그라츠, 조아네스 v Schmidt, Gabriel | 3-6,0-6 |
| ITF Austria F5 | 2017/07/31 08:00 | 코르윈, 펠릭스 v Schmidt, Gabriel | 6-3,6-4 |
| ITF Austria F5 | 2017/07/30 08:00 | 베작, 가스퍼 v Schmidt, Gabriel | 1-6,1-6 |
| ITF Austria F5 | 2017/07/29 07:00 | Schmidt, Gabriel v 파리지아, 니콜라스 | 6-0,6-1 |
| ITF Slovakia F1 | 2017/07/24 08:00 | 왓슨, 안드루 v Schmidt, Gabriel | 6-2,7-5 |