Stadium: Court 7 Round: 44 Ground: Hardcourt outdoor
| Montreal, Canada | 2019/08/03 19:30 | Troicki, Viktor v Klahn, Bradley | 5-7,3-6 |
| Challenger Bratislava | 2019/11/05 18:10 | Lacko, Lukas v Troicki, Viktor | 7-5,7-6 |
| Challenger Eckental | 2019/10/30 11:30 | Troicki, Viktor v Botic Van De Zandschulp | 6-3,3-6,4-6 |
| Challenger - Hambourg | 2019/10/24 14:50 | Bernabe Zapata Miralles v Troicki, Viktor | 6-3,7-6 |
| Challenger - Hambourg | 2019/10/22 18:05 | Darcis, Steve v Troicki, Viktor | 6-4,6-7,3-6 |
| ATP Stockholm | 2019/10/13 13:40 | Troicki, Viktor v Dennis Novak | 5-7,1-6 |
| Shanghai, Chine | 2019/10/05 08:15 | Londero, Juan Ignacio v Troicki, Viktor | 6-4,7-6 |
| Nur-Sultan II, Kazakhstan | 2019/10/01 07:30 | Troicki, Viktor v Gabashvili, Teimuraz | 3-6,3-6 |
| Montreal, Canada | 2019/08/03 19:30 | Troicki, Viktor v Klahn, Bradley | 5-7,3-6 |
| Challenger Canberra | 2020/01/09 01:20 | Steve Johnson v Klahn, Bradley | 6-4,7-6 |
| Challenger Canberra | 2020/01/07 05:25 | Klahn, Bradley v Norbert Gombos | 6-3,6-4 |
| Challenger Canberra | 2020/01/06 05:55 | Juan Pablo Varillas v Klahn, Bradley | 5-7,3-6 |
| Houston, USA | 2019/11/15 18:25 | Michael Mmoh v Klahn, Bradley | 5-7,7-6,7-6 |
| Houston, USA | 2019/11/13 17:55 | Filip Cristian Jianu v Klahn, Bradley | 5-7,3-6 |
| Challenger Knoxville | 2019/11/06 23:55 | Aleksandar Kovacevic v Klahn, Bradley | 3-6,7-6,6-4 |
| Ningbo, China | 2019/10/19 07:15 | Yasutaka Uchiyama v Klahn, Bradley | 4-6,6-4,6-3 |
| Ningbo, China | 2019/10/18 06:50 | Hiroki Moriya v Klahn, Bradley | 6-4,0-6,5-7 |