| ITF Romania F7 | 2016/06/19 06:00 | Johan Nikles v Camilo Ugo Carabelli | 6-4,7-5 |
| ITF Romania F5 | 2016/06/10 12:30 | Johan Nikles v Vaclav Safranek | 4-6,6-7 |
| ITF Romania F5 | 2016/06/09 12:00 | Johan Nikles v Bogdan Borza | 4-6,6-3,6-3 |
| ITF Romania F5 | 2016/06/07 08:45 | Antoine Bellier v Johan Nikles | 4-6,4-6 |
| ATP Geneva Qual | 2016/05/15 10:30 | Roberto Ortega-Olmedo v Johan Nikles | 6-2,7-6 |
| ATP Geneva Qual | 2016/05/14 09:00 | Johan Nikles v Nicolas Barrientos | 2-6,6-2,6-3 |
| ITF Turkey F18 | 2016/05/04 10:25 | Thomas Statzberger v Johan Nikles | 5-7,6-1,6-1 |
| ITF Turkey F17 | 2016/04/27 09:20 | Alessandro Bega v Johan Nikles | 6-1,6-3 |
| French Open Qual | 2016/05/18 17:00 | Ryan Harrison v Gerald Melzer | 4-6,7-6,4-6 |
| French Open Qual | 2016/05/16 14:30 | Alessandro Giannessi v Ryan Harrison | 3-6,2-6 |
| Challenger Heilbronn | 2016/05/10 09:00 | Ryan Harrison v Renzo Olivo | 6-3,3-6,2-6 |
| Challenger Tallahassee | 2016/04/29 23:35 | Frances Tiafoe v Ryan Harrison | 7-6,6-4 |
| Challenger Tallahassee | 2016/04/28 19:30 | Noah Rubin v Ryan Harrison | 6-2,0-6,3-6 |
| Challenger Tallahassee | 2016/04/27 19:45 | Ryan Harrison v Giovanni Lapentti | 6-3,6-4 |
| Challenger Tallahassee | 2016/04/26 19:15 | Henri Laaksonen v Ryan Harrison | 3-6,6-7 |
| Challenger Savannah | 2016/04/18 21:30 | Jared Donaldson v Ryan Harrison | 6-2,7-6 |