Round: 25 Ground: Hardcourt indoor
| Challenger Columbus | 2015/09/21 16:30 | Daniel Cox v John-Patrick Smith | 7-6,3-6,2-6 |
| US Open | 2015/09/01 16:50 | John-Patrick Smith v Mikhail Youzhny | 1-6,6-3,5-7,6-7 |
| US Open Qual | 2015/08/28 18:15 | Guilherme Clezar v John-Patrick Smith | 3-6,2-6 |
| US Open Qual | 2015/08/27 19:45 | Vincent Millot v John-Patrick Smith | 5-7,2-6 |
| US Open Qual | 2015/08/26 17:20 | Jesse Witten v John-Patrick Smith | 6-7,1-6 |
| ATP Montreal Qual | 2015/08/08 14:00 | John-Patrick Smith v Mikhail Youzhny | 1-6,6-7 |
| ATP Washington Qual | 2015/08/01 14:00 | Matija Pecotic v John-Patrick Smith | 2-6,4-6 |
| ATP Newport | 2015/07/18 18:00 | Rajeev Ram v John-Patrick Smith | 6-4,7-6 |
| Challenger Orleans | 2015/09/30 20:10 | Igor Sijsling v Marco Chiudinelli | 3-6,7-5,3-6 |
| Challenger Como | 2015/09/01 09:30 | Fernando Romboli v Igor Sijsling | 6-3,1-6,6-3 |
| US Open Qual | 2015/08/26 17:30 | Nicolas Almagro v Igor Sijsling | 7-6,6-3 |
| Wimbledon | 2015/06/30 13:05 | Sam Querrey v Igor Sijsling | 7-5,6-3,6-4 |
| Wimbledon Qual | 2015/06/24 10:00 | Jurgen Melzer v Igor Sijsling | 6-1,5-7,3-6 |
| Wimbledon Qual | 2015/06/22 14:30 | Roberto Carballes Baena v Igor Sijsling | 4-6,7-5,3-6 |
| Challenger Heilbronn | 2015/05/12 11:35 | Yoshihito Nishioka v Igor Sijsling | 6-4,6-7,7-6 |
| Challenger St Brieuc | 2015/04/07 09:00 | Uladzimir Ignatik v Igor Sijsling | 2-6,6-4,6-4 |