Stadium: Court 7 Round: 25 Ground: Hardcourt outdoor
| Challenger Charlottesville | 2018/10/27 16:10 | Reinberg, Emil v Stefan Kozlov | 6-3,6-7,1-6 |
| Challenger Lexington Qual | 2018/07/29 17:45 | Reinberg, Emil v Schneider, Ronnie | 3-6,6-7 |
| Challenger Lexington Qual | 2018/07/28 14:00 | Turini, Thales v Reinberg, Emil | 3-6,2-6 |
| Atlanta, USA | 2018/07/24 23:00 | Youzhny, Mikhail v Reinberg, Emil | 6-2,6-0 |
| Challenger Winnetka Qual | 2018/07/09 16:50 | Reinberg, Emil v Collin Altamirano | 3-6,4-6 |
| Challenger Winnetka Qual | 2018/07/08 16:40 | Alafia Ayeni v Reinberg, Emil | 6-3,4-6,5-7 |
| Challenger Winnetka Qual | 2018/07/07 15:00 | Kirkov, Vasil v Reinberg, Emil | 5-7,2-6 |
| ITF USA F17 | 2018/06/30 15:00 | Riffice, Sam v Reinberg, Emil | 6-0,6-3 |
| ITF M15 Champaign | 2019/06/08 19:30 | Sumit Sarkar v Nathan Ponwith | 3-6,4-6 |
| ITF M15 Champaign | 2019/06/07 17:00 | Bryde, Trent v Sumit Sarkar | 3-6,1-6 |
| ITF M15 Champaign | 2019/06/06 17:00 | Sumit Sarkar v Ignat, Dragos Constantin | 7-5,6-1 |
| ITF M15 Champaign | 2019/06/05 21:00 | Sumit Sarkar v Beran, Martin | 6-4,6-4 |
| Houston, USA | 2018/11/13 22:55 | Sumit Sarkar v Ortega-Olmedo, Roberto | 6-7,1-6 |
| ITF USA F27 | 2018/10/09 16:40 | Findel-Hawkins, Jack v Sumit Sarkar | 7-6,7-6 |
| ITF USA F24 | 2018/09/13 16:30 | Shropshire, Samuel v Sumit Sarkar | 7-6,6-1 |
| ITF USA F24 | 2018/09/11 16:30 | Ianakiev, Milen v Sumit Sarkar | 3-6,1-6 |