Round: 29 Ground: Hardcourt indoor
| Challenger Columbus | 2015/09/26 17:00 | Smyczek, Tim v Harrison, Ryan | 6-7,7-6,1-6 |
| Challenger Columbus | 2015/09/25 17:00 | Harrison, Ryan v Henri Laaksonen | 6-3,6-3 |
| Challenger Columbus | 2015/09/24 16:45 | Harrison, Ryan v Quentin Halys | 6-4,6-3 |
| Challenger Columbus | 2015/09/22 20:30 | Harrison, Ryan v Bossel, Adrien | 6-4,6-2 |
| US Open, New York, USA | 2015/09/01 23:20 | Ram, Rajeev v Harrison, Ryan | 7-6,6-4,6-1 |
| ATP Cincinnati Qual | 2015/08/15 23:05 | Harrison, Ryan v Thanasi Kokkinakis | 5-7,6-3,6-7 |
| ATP Montreal Qual | 2015/08/08 20:00 | Denis Kudla v Harrison, Ryan | 6-4,6-2 |
| Washington, USA | 2015/08/03 20:00 | James Duckworth v Harrison, Ryan | 6-1,7-6 |
| Challenger Columbus | 2015/09/23 20:00 | Novikov, Dennis v Arevalo-Gonzalez, Marcelo | 7-6,6-7,6-2 |
| Challenger Columbus | 2015/09/22 15:30 | Novikov, Dennis v Stefan Kozlov | 7-6,7-6 |
| US Open, New York, USA, Qualifying | 2015/08/27 15:00 | Novikov, Dennis v Ebden, Matthew | 3-6,7-6,2-6 |
| US Open, New York, USA, Qualifying | 2015/08/25 17:10 | Gastao Elias v Novikov, Dennis | 7-6,3-6,4-6 |
| Challenger Aptos | 2015/08/11 00:30 | Krajicek, Austin v Novikov, Dennis | 6-7,6-4,7-6 |
| Wimbledon Qual | 2015/06/22 14:15 | Novikov, Dennis v Mathieu, Paul-Henri | 2-6,6-2,3-6 |
| Challenger Caltanissetta | 2015/06/10 18:35 | Fratangelo, Bjorn v Novikov, Dennis | 3-6,6-3,6-2 |
| Challenger Caltanissetta | 2015/06/09 11:10 | Novikov, Dennis v Salvatore Caruso | 4-6,7-5,7-5 |