Stadium: Court 7 Round: 44 Ground: Hardcourt outdoor
| ITF M25 Nonthaburi | 2019/07/23 02:30 | Worarin Kumthonkittikul v Kunal Anand | 6-7,4-6 |
| ITF M25 Nonthaburi | 2019/07/22 02:30 | Shamirul S Mohd Adam Das v Worarin Kumthonkittikul | 4-6,6-2,6-10 |
| ITF M15 Singapore | 2019/06/12 06:30 | Worarin Kumthonkittikul v Christian Didier Chin | 6-3,6-7,1-6 |
| ITF M25 Nonthaburi | 2019/05/28 03:00 | Worarin Kumthonkittikul v Isaac Becroft | 3-6,2-6 |
| ITF M25 Nonthaburi | 2019/05/27 03:00 | Worarin Kumthonkittikul v Odeda Muhammad Arazza | 6-1,6-1 |
| ITF M25 Nonthaburi | 2019/05/22 04:45 | Kelsey Stevenson v Worarin Kumthonkittikul | 6-2,6-3 |
| ITF M25 Nonthaburi | 2019/05/20 03:00 | Worarin Kumthonkittikul v Vorachon Rakpuangchon | 6-3,6-1 |
| ITF M25 Namangan | 2019/04/30 09:15 | Ivan Liutarevich v Worarin Kumthonkittikul | 6-4,6-4 |
| ITF Singapore F3 | 2018/05/26 04:00 | Matthew Leffler v Teeradon Tortrakul | 2-6,3-6 |
| ITF Australia F4 Qual | 2018/03/24 03:30 | Themi Sitzoukis v Matthew Leffler | 6-4,7-6 |
| ITF Australia F3 Qual | 2018/03/16 23:00 | Nicholas Jovanovski v Matthew Leffler | 7-6,6-1 |
| ITF Australia F2 Qual | 2018/03/04 00:30 | Benard Bruno Nkomba v Matthew Leffler | 6-4,6-3 |
| ITF Australia F1 Qual | 2018/02/26 01:10 | Matthew Leffler v Patrick Harper | 4-6,6-3,2-6 |
| ITF Australia F1 Qual | 2018/02/25 00:00 | Alan Poric v Matthew Leffler | 1-6,6-7 |
| ITF Australia F1 Qual | 2018/02/24 03:00 | Mustafa Ibraimi v Matthew Leffler | 3-6,3-6 |
| ITF Thailand F12 Qual | 2017/12/09 05:30 | Matthew Leffler v Miguel Diaz | 3-6,3-6 |