| ITF Hong Kong F2 | 2018/07/03 04:30 | Sumit Sarkar v Hei Yin Andrew Li | 3-6,0-6 |
| ITF Hong Kong F2 Qual | 2018/07/01 02:00 | Sumit Sarkar v Stefan Vujic | 6-4,1-6,6-4 |
| ITF Hong Kong F2 Qual | 2018/06/30 02:00 | Sumit Sarkar v Chattarin Wareesri | 6-0,6-0 |
| ITF Spain F15 | 2018/06/17 09:30 | Clement Geens v Sumit Sarkar | 7-5,7-5 |
| ITF Spain F15 | 2018/06/16 15:00 | Sumit Sarkar v Diego-Jose Manrique-Velazquez | 6-1,6-4 |
| ITF Spain F15 | 2018/06/15 16:05 | Ignasi De Rueda De Genover v Sumit Sarkar | 3-6,6-1,0-6 |
| ITF Spain F15 | 2018/06/14 15:00 | Sumit Sarkar v Mick Lescure | 6-2,2-6,6-2 |
| ITF Spain F15 | 2018/06/12 16:30 | Rafael Izquierdo Luque v Sumit Sarkar | 6-4,3-6,6-7 |
| ITF Malaysia F1 Qual | 2018/07/01 01:00 | Bernardo A P E Oliveira v Siddharth Vishwakarma | 6-7,6-7 |
| ITF USA F31 | 2017/09/17 17:30 | Keegan Smith v Bernardo A P E Oliveira | 6-1,6-0 |