Stadium: Court 22 Round: 46 Ground: Hardcourt outdoor
| Challenger Mouilleron le Captif | 2018/11/03 16:00 | Oscar Otte v Fabrice Martin | 6-7,6-7 |
| Challenger Eckental | 2018/11/01 17:55 | Oscar Otte v Ruben Bemelmans | 4-6,1-6 |
| Challenger Eckental | 2018/10/30 11:00 | Louis Wessels v Oscar Otte | 3-6,1-6 |
| ATP Stockholm | 2018/10/18 10:00 | Oscar Otte v Tennys Sandgren | 6-7,6-3,3-6 |
| ATP Stockholm | 2018/10/17 10:00 | Oscar Otte v Jurgen Zopp | 6-3,7-5 |
| ATP Stockholm | 2018/10/15 10:00 | Oscar Otte v Jurgen Zopp | 6-3,7-6 |
| Challenger Ortisei | 2018/10/11 10:25 | Oscar Otte v Ricardas Berankis | 2-6,7-5,2-6 |
| Challenger Ortisei | 2018/10/08 12:00 | Daniel Masur v Oscar Otte | 6-0,4-6,6-7 |
| Challenger Playford | 2018/12/31 07:15 | Rudolf Molleker v Viktor Troicki | 4-6,2-6 |
| Challenger Bratislava | 2018/11/07 10:00 | Rudolf Molleker v Ruben Bemelmans | 4-6,3-6 |
| Challenger Eckental | 2018/10/30 13:00 | Lukas Rosol v Rudolf Molleker | 3-6,6-3,6-2 |
| ATP Moscow | 2018/10/13 16:00 | Alexander Bublik v Rudolf Molleker | 6-2,6-2 |
| Challenger Szczecin | 2018/09/15 14:00 | Alejandro Davidovich Fokina v Rudolf Molleker | 6-1,2-6,6-2 |
| Challenger Szczecin | 2018/09/14 17:40 | Roberto Marcora v Rudolf Molleker | 2-6,4-6 |
| Challenger Szczecin | 2018/09/13 15:10 | Rudolf Molleker v Thiago Monteiro | 6-3,7-5 |
| Challenger Szczecin | 2018/09/11 14:30 | Rudolf Molleker v Maciej Rajski | 6-3,6-2 |