Stadium: Court 19 Round: 60 Ground: Clay
| ITF USA F29 | 2018/11/01 22:30 | Filip Cristian Jianu v Riffice, Sam | 7-5,4-6,6-3 |
| ITF USA F29 | 2018/10/31 16:30 | Ortiz Tovar, Edson David v Riffice, Sam | 6-2,4-6,2-6 |
| ITF USA F28 | 2018/10/16 18:10 | Findel-Hawkins, Jack v Riffice, Sam | 6-4,6-2 |
| Challenger Lexington | 2018/07/30 17:25 | Ward, Alexander v Riffice, Sam | 6-3,6-1 |
| Challenger Binghamton Qual | 2018/07/22 17:20 | Antoine Escoffier v Riffice, Sam | 6-2,6-2 |
| Challenger Binghamton Qual | 2018/07/21 13:00 | Riffice, Sam v Halebian, Alexios | 6-3,6-7,6-1 |
| Challenger Winnetka Qual | 2018/07/07 15:00 | Riffice, Sam v Collin Altamirano | 6-7,6-3,4-6 |
| ITF USA F17 | 2018/07/01 15:30 | Marc-Andrea Huesler v Riffice, Sam | 6-4,6-2 |
| ITF USA F30 | 2018/11/02 15:30 | Chase Ferguson v Gilmore, Stratton | 6-4,6-1 |
| ITF USA F29 | 2018/10/27 14:00 | Gilmore, Stratton v Rafael Tosetto | 2-6,5-7 |
| ITF Turkey F31 | 2018/10/06 07:00 | Gilmore, Stratton v Filippo Speziali | 2-6,2-6 |
| ITF Turkey F30 | 2018/09/29 07:00 | Gilmore, Stratton v Shchaya-Zubrov, Pavel | 0-6,2-6 |
| ITF Turkey F29 | 2018/09/22 07:00 | Gilmore, Stratton v Zlatanovic, Arsenije | 2-6,6-2,4-6 |
| ITF Turkey F28 | 2018/09/19 07:30 | Gilmore, Stratton v Walder, Jim | 3-6,0-6 |
| ITF Turkey F28 | 2018/09/17 07:30 | Nadaf, Hamid Reza v Gilmore, Stratton | 6-0,6-1 |
| ITF Romania F11 | 2018/08/25 14:00 | Dan Alexandru Tomescu v Gilmore, Stratton | 6-1,6-1 |