Round: 25 Ground: Hardcourt outdoor
| ATP Washington | 2015/08/03 22:30 | Darian King v Go Soeda | 2-6,1-6 |
| Challenger Granby | 2015/07/23 22:00 | Darian King v Felix Auger Aliassime | 5-7,3-6 |
| ITF USA F21 | 2015/07/02 13:30 | Darian King v Clay Thompson | 1-6,2-6 |
| ITF USA F21 | 2015/07/01 13:30 | Darian King v Samir Iftikhar | 6-0,6-3 |
| ITF USA F19 | 2015/06/28 17:00 | Darian King v Noah Rubin | 2-6,7-5,6-0 |
| ITF USA F19 | 2015/06/25 22:30 | Darian King v Ezekiel Clark | 6-0,6-0 |
| ITF USA F19 | 2015/06/23 18:00 | Darian King v Aron Hiltzik | 6-2,6-3 |
| ITF Mexico F4 | 2015/05/23 23:00 | Darian King v Ernesto Escobedo | 7-5,5-7,6-4 |
| ATP Montreal Qual | 2015/08/08 20:00 | Denis Kudla v Ryan Harrison | 6-4,6-2 |
| ATP Washington | 2015/08/03 20:00 | James Duckworth v Ryan Harrison | 6-1,7-6 |
| ATP Washington Qual | 2015/08/01 16:40 | Guilherme Clezar v Ryan Harrison | 3-6,7-6,2-6 |
| ATP Newport | 2015/07/14 18:05 | Ryan Harrison v Yuichi Sugita | 1-6,7-5,3-6 |
| Wimbledon Qual | 2015/06/22 17:45 | Guido Andreozzi v Ryan Harrison | 7-6,4-6,6-4 |
| ATP Halle Qual | 2015/06/13 10:30 | Ryan Harrison v Tatsuma Ito | 4-6,2-6 |
| ATP Houston Qual | 2015/04/04 16:45 | Thiago Monteiro v Ryan Harrison | 4-6,7-6,6-2 |
| ATP Miami | 2015/03/26 22:45 | Ryan Harrison v Jurgen Melzer | 6-7,3-6 |