Stadium: Court 3 Round: 62
| ITF Malaysia F2 | 2018/07/08 04:30 | Thomas Hann v Daisuke Sumizawa | 7-5,6-1 |
| ITF Guam F1 | 2018/06/19 04:30 | Yuichi Ito v Daisuke Sumizawa | 6-3,4-6,6-3 |
| ITF Japan F8 | 2018/06/11 00:30 | Keisuke Watanuki v Daisuke Sumizawa | 6-4,2-6,6-2 |
| ITF Japan F7 Qual | 2018/06/02 01:00 | Daisuke Sumizawa v Taisei Miyamoto | 2-6,4-6 |
| ITF Vietnam F3 | 2018/05/13 04:00 | Nicholas Bybel v Daisuke Sumizawa | 6-1,6-3 |
| ITF Vietnam F3 | 2018/05/12 03:00 | Artem Vu v Daisuke Sumizawa | 3-6,1-6 |
| ITF Vietnam F2 | 2018/05/05 05:00 | Daisuke Sumizawa v Jirat Navasirisomboon | 2-6,5-7 |
| ITF Vietnam F1 | 2018/04/29 05:30 | Jirat Navasirisomboon v Daisuke Sumizawa | 6-2,6-1 |
| ITF Malaysia F3 | 2018/07/15 10:30 | Naesar Jewoor v Siddharth Vishwakarma | 1-6,2-6 |
| ITF Malaysia F3 | 2018/07/15 04:30 | Thanapet Chanta v Siddharth Vishwakarma | 2-6,1-6 |
| ITF Malaysia F2 | 2018/07/08 03:00 | Marc Fornell-Mestres v Siddharth Vishwakarma | 6-4,6-7,7-6 |
| ITF Malaysia F1 | 2018/07/05 05:20 | Siddharth Vishwakarma v David Perez Sanz | 4-6,4-6 |
| ITF Malaysia F1 | 2018/07/04 02:00 | Maciej Smola v Siddharth Vishwakarma | 6-7,4-6 |
| ITF Malaysia F1 | 2018/07/03 08:00 | Jake Delaney v Siddharth Vishwakarma | 4-6,0-6 |
| ITF Malaysia F1 Qual | 2018/07/02 03:45 | Ashwin R Sharma v Siddharth Vishwakarma | 2-6,5-7 |
| ITF Malaysia F1 Qual | 2018/07/01 01:00 | Bernardo A P E Oliveira v Siddharth Vishwakarma | 6-7,6-7 |