Stadium: Grandstand Round: 64 Ground: Hardcourt outdoor
| ATP Brisbane | 2018/12/29 02:40 | Klahn, Bradley v Christopher Eubanks | 6-3,4-6,6-7 |
| Houston, USA | 2018/11/19 01:00 | Smith, Roy v Klahn, Bradley | 6-7,6-7 |
| Houston, USA | 2018/11/17 17:45 | Dominik Koepfer v Klahn, Bradley | 3-6,4-6 |
| Houston, USA | 2018/11/16 20:45 | Song, Evan v Klahn, Bradley | 3-6,6-4,1-6 |
| Houston, USA | 2018/11/15 22:10 | Redlicki, Michael v Klahn, Bradley | 4-6,4-6 |
| Houston, USA | 2018/11/13 18:10 | Sarkissian, Alexander v Klahn, Bradley | 1-6,2-6 |
| Challenger Knoxville | 2018/11/08 16:55 | Evgeny Karlovskiy v Klahn, Bradley | 5-7,6-4,6-4 |
| Challenger Knoxville | 2018/11/06 20:50 | Aragone, JC v Klahn, Bradley | 2-6,6-7 |
| Challenger Anning Qual | 2017/04/24 05:00 | Quinzi, Gianluigi v Oswald, Philipp | 6-3,7-5 |
| Challenger Anning Qual | 2017/04/23 06:30 | Oswald, Philipp v Krajicek, Austin | 6-3,6-4 |
| Challenger Anning Qual | 2017/04/22 05:40 | Oswald, Philipp v Mukund Sasikumar | 6-3,6-4 |
| ATP Geneva Qual | 2015/05/16 12:40 | Oswald, Philipp v Andrey Kuznetsov | 4-6,2-6 |
| WTA Kuala Lumpur Qual | 2014/09/22 05:00 | Niki, Takuto v Oswald, Philipp | 3-6,6-3,3-6 |
| WTA Kuala Lumpur Qual | 2014/09/20 03:00 | Gonzalez, Santiago v Oswald, Philipp | 4-6,3-6 |
| Kitzbühel, Autriche, Qualifications | 2014/07/26 09:05 | Aslan Karatsev v Oswald, Philipp | 7-6,6-3 |