| 2022-10-22 | Sitthichai vs Mohammed Boutasaa | ONE on Prime Video 3 | WDecsion 3R |
| 2022-03-26 | Sitthichai vs Chingiz Allazov | ONE: X | LDecsion 3R |
| 2022-01-28 | Sitthichai vs Davit Kiria | ONE: Only the Brave | WDecsion 3R |
| 2021-10-15 | Sitthichai vs Tayfun Özcan | ONE Championship: First Strike | WDecsion 3R |
| 2021-08-27 | Sitthichai vs Tawanchai P.K. Saenchaimuaythaigym | ONE Championship: Battleground 3 | WDecsion 3R |
| 2020-07-31 | Sitthichai vs Superbon Banchamek | ONE Championship: No Surrender | LDecsion 3R |
| 2019-11-15 | Sitthichai vs Bobirjon Tagaev | Macau Fight 2019 | W4R |
| 2019-05-17 | Sitthichai vs Marat Grigorian | Glory 65 | L5R |
| 2018-11-02 | Sitthichai vs Josh Jauncey | Glory 61 | WDecsion 5R |
| 2018-08-25 | Sitthichai vs Marat Grigorian | Glory 57 | WDecsion 5R |
| 2018-05-12 | Sitthichai vs Tyjani Beztati | Glory 53 | WDecsion 5R |
| 2018-02-16 | Sitthichai vs Christian Baya | Glory 50 | WDecsion 5R |