Stadium: Court 12 Round: 62 Ground: Hardcourt outdoor
| ITF Guam F1 | 2018/06/17 00:00 | Yasunori Hashikawa v Worarin Kumthonkittikul | 1-6,5-7 |
| ITF Tunisia F21 | 2018/05/30 11:35 | Vasil Kirkov v Worarin Kumthonkittikul | 5-7,7-6,6-1 |
| ITF Tunisia F21 | 2018/05/27 09:00 | Philip Sikman v Worarin Kumthonkittikul | 2-6,2-6 |
| ITF Tunisia F21 | 2018/05/26 10:00 | Robert Hughes v Worarin Kumthonkittikul | 1-6,4-6 |
| ITF Tunisia F20 | 2018/05/22 11:00 | Constantin Bittoun Kouzmine v Worarin Kumthonkittikul | 6-2,6-2 |
| ITF Tunisia F19 | 2018/05/12 09:00 | Hillel Rousseau v Worarin Kumthonkittikul | 6-1,7-6 |
| ITF Egypt F8 | 2018/03/03 12:30 | Fabian Gruber v Worarin Kumthonkittikul | 7-5,6-3 |
| ITF Egypt F7 | 2018/02/25 10:30 | Worarin Kumthonkittikul v Stefan Seifert | 4-6,0-6 |
| ITF Indonesia F2 Qual | 2018/07/31 02:00 | Mohit Mayur Jayaprakash v Siddharth Vishwakarma | 6-0,6-4 |
| ITF Indonesia F2 Qual | 2018/07/29 07:00 | Jayden Court v Siddharth Vishwakarma | 6-4,3-6,4-6 |
| ITF Indonesia F2 Qual | 2018/07/28 04:30 | Panji Untung Setiawan v Siddharth Vishwakarma | 7-6,2-6,2-6 |
| ITF Indonesia F1 | 2018/07/25 03:00 | Lance-Pierre Du Toit v Siddharth Vishwakarma | 3-6,3-6 |
| ITF Indonesia F1 Qual | 2018/07/23 05:30 | Siddharth Vishwakarma v Jatin Dahiya | 6-3,6-4 |
| ITF Indonesia F1 Qual | 2018/07/22 05:00 | Siddharth Vishwakarma v Ahmed Choudhary | 6-2,6-0 |
| ITF Malaysia F3 | 2018/07/18 02:30 | Siddharth Vishwakarma v Isaac Stoute | 4-6,2-6 |
| ITF Malaysia F3 | 2018/07/17 07:15 | Siddharth Vishwakarma v Anurag Nenwani | 6-4,7-6 |