Stadium: Court 2 Round: 26 Ground: Clay
| Challenger Knoxville MD | 2023/11/10 17:00 | Karlovskiy/Serdarusic v Kingsley/Martinez | 4-6,3-6 |
| Challenger Knoxville MD | 2023/11/09 20:20 | Karlovskiy/Serdarusic v Sandgren/Willis | 6-4,6-4 |
| Challenger Knoxville MD | 2023/11/08 17:40 | Clark/Whiting v Karlovskiy/Serdarusic | 6-4,3-6,8-10 |
| Challenger Charlottesville MD | 2023/11/02 19:30 | Karlovskiy/Serdarusic v Kudla/Kwiatkowski | 2-6,2-6 |
| Challenger Charlottesville MD | 2023/11/01 21:15 | Verdugo/Quinn v Karlovskiy/Serdarusic | 3-6,7-5,13-15 |
| Challenger St. Petersburg MD | 2021/03/12 09:35 | De Jong/Verbeek v Karlovskiy/Serdarusic | 6-2,7-6 |
| Challenger St. Petersburg MD | 2021/03/11 14:10 | Karlovskiy/Serdarusic v Pasha/Schnur | 6-7,6-3,10-4 |
| Challenger St. Petersburg MD | 2021/03/10 07:00 | Karlovskiy/Serdarusic v Sels/Van Rijthoven | 6-1,6-2 |