Round: 26 Ground: Hardcourt indoor
| Challenger Columbus | 2015/09/26 17:00 | Smyczek, Tim v Harrison, Ryan | 6-7,7-6,1-6 |
| Challenger Dallas | 2015/02/04 21:40 | Smyczek, Tim v Harrison, Ryan | 6-2,3-6,6-1 |
| Challenger Tiburon | 2014/10/07 23:00 | Harrison, Ryan v Smyczek, Tim | 3-6,3-6 |
| Challenger Knoxville | 2015/11/10 19:10 | Harrison, Ryan v Kavcic, Blaz | 2-6,4-6 |
| Challenger Charlottesville | 2015/11/05 00:05 | Henri Laaksonen v Harrison, Ryan | 7-5,7-5 |
| Challenger Charlottesville | 2015/11/02 23:30 | Tennys Sandgren v Harrison, Ryan | 5-7,3-6 |
| Challenger Las Vegas | 2015/10/20 21:00 | Michael Mmoh v Harrison, Ryan | 6-2,6-3 |
| Challenger Fairfield | 2015/10/12 23:30 | Darian King v Harrison, Ryan | 6-4,7-5 |
| Challenger Tiburon | 2015/09/29 20:25 | Harrison, Ryan v Baughman, Deiton | 6-3,6-3 |
| Challenger Columbus | 2015/09/27 15:00 | Harrison, Ryan v Novikov, Dennis | 4-6,6-3,3-6 |
| Challenger Columbus | 2015/09/26 17:00 | Smyczek, Tim v Harrison, Ryan | 6-7,7-6,1-6 |
| Challenger Dallas | 2016/02/02 03:10 | Mitchell Krueger v Smyczek, Tim | 4-6,3-6 |
| Challenger Knoxville | 2015/11/12 15:00 | Donaldson, Jared v Smyczek, Tim | 7-5,7-6 |
| Challenger Knoxville | 2015/11/11 20:50 | Tommy Paul v Smyczek, Tim | 4-6,4-6 |
| Challenger Charlottesville | 2015/11/04 20:10 | Smyczek, Tim v Bangoura, Sekou | 6-3,7-6 |
| Challenger Charlottesville | 2015/11/02 21:50 | Smyczek, Tim v Daniel Evans | 6-4,6-4 |
| Challenger Las Vegas | 2015/10/21 18:00 | Kavcic, Blaz v Smyczek, Tim | 7-6,6-4 |
| Challenger Las Vegas | 2015/10/19 19:00 | Dancevic, Frank v Smyczek, Tim | 4-6,2-6 |
| Challenger Fairfield | 2015/10/15 23:00 | Smyczek, Tim v Taylor Fritz | 2-6,3-6 |