Stadium: Court 1 Round: 64
| Atlanta, USA | 2018/07/23 19:40 | Lacko, Lukas v Gunneswaran, Prajnesh | 6-2,6-2 |
| ATP Atlanta Qual | 2018/07/22 15:00 | Tommy Paul v Gunneswaran, Prajnesh | 3-6,3-6 |
| ATP Atlanta Qual | 2018/07/21 14:00 | Gunneswaran, Prajnesh v Mohamed Safwat | 0-6,6-3,6-1 |
| ATP Newport Qual | 2018/07/15 20:55 | Gunneswaran, Prajnesh v Bega, Alessandro | 4-6,7-5,4-6 |
| Wimbledon Qual | 2018/06/25 13:05 | Kamke, Tobias v Gunneswaran, Prajnesh | 6-1,6-4 |
| Challenger Ilkley Qual | 2018/06/17 10:00 | Gunneswaran, Prajnesh v Novikov, Dennis | 6-4,6-2 |
| Stuttgart, Germany | 2018/06/14 09:00 | Pella, Guido v Gunneswaran, Prajnesh | 7-6,6-3 |
| Stuttgart, Germany | 2018/06/13 09:00 | Gunneswaran, Prajnesh v Denis Shapovalov | 7-6,2-6,6-3 |
| Challenger Caltanissetta Qual | 2018/06/09 14:45 | Reyes-Varela, Miguel Angel v Sorgi, Joao Pedro | 2-6,2-6 |
| Challenger Medellin Qual | 2017/07/09 21:40 | Diaz-Figueroa, Christopher v Reyes-Varela, Miguel Angel | 6-4,6-4 |
| Challenger Medellin Qual | 2017/07/09 18:20 | Reyes-Varela, Miguel Angel v Fernandez Lopez, Andres Ariel | 6-1,6-0 |
| Challenger Tiburon Qual | 2016/09/24 23:05 | Reyes-Varela, Miguel Angel v Salvatore Caruso | 4-6,1-6 |
| Challenger Rome Qual | 2016/04/30 13:45 | Reyes-Varela, Miguel Angel v Yasutaka Uchiyama | 0-6,4-6 |
| Challenger Rome Qual | 2016/04/30 10:10 | Reyes-Varela, Miguel Angel v Riccardo Bonadio | 4-6,6-2,6-4 |
| Coupe Davis | 2014/09/12 15:30 | Darian King v Reyes-Varela, Miguel Angel | 6-4,6-4,6-2 |
| ITF Spain F18 | 2014/07/16 13:00 | Mesquida Berg, Oscar v Reyes-Varela, Miguel Angel | 6-2,2-6,6-4 |