Round: 60 Ground: Hardcourt outdoor
| ITF USA F22 Qual | 2018/08/05 16:00 | Louis Siegler v Alex Blumenberg | 6-3,3-6,2-6 |
| ITF USA F22 Qual | 2018/08/04 16:00 | Rico Gore v Louis Siegler | 0-6,0-6 |
| Challenger Bastad Qual | 2018/07/07 08:15 | Louis Siegler v Ben Patael | 0-6,1-6 |
| ITF USA F12 | 2018/04/22 18:30 | Richard Torres v Louis Siegler | 7-5,6-0 |
| ITF USA F11 | 2018/04/14 16:30 | Louis Siegler v Zandrix Acob | 4-6,2-6 |
| ITF USA F6 | 2018/01/29 16:00 | Louis Siegler v Jared Pratt | 0-6,4-6 |
| ITF USA F6 | 2018/01/28 13:30 | Louis Siegler v Joseph W. Van Meter | 6-2,6-1 |
| ITF USA F6 | 2018/01/27 14:00 | Tyler Mercier v Louis Siegler | 4-6,6-2,3-6 |
| ITF Serbia F1 | 2018/08/08 13:50 | Rrezart Cungu v James Frawley | 1-6,6-2,4-6 |
| Challenger Prague | 2018/07/21 08:00 | Rrezart Cungu v Pavel Nejedly | 2-6,1-6 |
| ITF USA F15 | 2018/06/20 18:00 | Ronnie Schneider v Rrezart Cungu | 6-2,6-4 |
| ITF USA F13 Qual | 2018/06/10 14:00 | Rrezart Cungu v Gage Brymer | 5-7,3-6 |
| Davis Cup | 2018/04/07 09:00 | Rrezart Cungu v Denzil Agius | 6-0,6-0 |
| Davis Cup | 2018/04/06 08:00 | Rrezart Cungu v Ioannis Stergiou | 7-6,6-2 |
| Davis Cup | 2018/04/05 08:00 | Arturs Lazdins v Rrezart Cungu | 3-6,1-6 |
| Davis Cup | 2018/04/04 07:00 | Rrezart Cungu v Torgom Asatryan | 6-3,6-0 |