Stadium: Court 1 Round: 25 Ground: Hardcourt outdoor
| ITF USA F27 | 2018/10/09 16:40 | Jack Findel-Hawkins v Sumit Sarkar | 7-6,7-6 |
| ITF USA F24 | 2018/09/13 16:30 | Samuel Shropshire v Sumit Sarkar | 7-6,6-1 |
| ITF USA F24 | 2018/09/11 16:30 | Milen Ianakiev v Sumit Sarkar | 3-6,1-6 |
| ITF Chinese Taipei F2 | 2018/07/25 02:00 | Sumit Sarkar v Benjamin Lock | 3-6,3-6 |
| ITF Malaysia F3 | 2018/07/18 02:30 | Maciej Smola v Sumit Sarkar | 6-2,6-4 |
| ITF Malaysia F3 | 2018/07/17 05:30 | Chanchai Sookton-Eng v Sumit Sarkar | 1-6,4-6 |
| ITF Malaysia F2 | 2018/07/10 05:45 | David Perez Sanz v Sumit Sarkar | 7-5,6-0 |
| ITF Malaysia F2 | 2018/07/09 04:00 | Sumit Sarkar v Courtney John Lock | 6-4,6-0 |
| Challenger Las Vegas | 2018/10/25 19:20 | Roberto Ortega-Olmedo v Jason Jung | 4-6,4-6 |
| Challenger Las Vegas | 2018/10/23 22:45 | Jan Choinski v Roberto Ortega-Olmedo | 3-6,4-6 |
| Challenger Las Vegas | 2018/10/22 18:00 | Hugo Grenier v Roberto Ortega-Olmedo | 7-6,3-6,4-6 |
| Challenger Las Vegas | 2018/10/21 19:20 | Alex Rybakov v Roberto Ortega-Olmedo | 6-7,4-6 |
| Challenger Las Vegas | 2018/10/20 20:00 | Lucas Gomez v Roberto Ortega-Olmedo | 2-6,7-5,0-6 |
| Challenger Calgary | 2018/10/15 20:05 | Enzo Couacaud v Roberto Ortega-Olmedo | 6-2,4-6,6-3 |
| Challenger Fairfield | 2018/10/06 22:15 | Frederik Nielsen v Roberto Ortega-Olmedo | 6-2,6-2 |
| Challenger Stockton | 2018/09/29 17:00 | Roberto Ortega-Olmedo v Marcos Giron | 4-6,4-6 |