Tale of the Tape
Age
26
Height
—
Reach
—
Stance
Orthodox
Country
Thailand
Key Stats
98%
Win Rate
88%
KO Rate
35
KO Wins
41
Pro Fights
Advanced Stats
Color = level vs. divisionCareer
Win Methods
Thanongsak Simsri is the reigning light flyweight IBF champion — 40-1 and holding the belt everyone in the division is chasing.
The style is simple and terrifying: 88% of his wins never reach the scorecards. When he touches people, they fall — 35 knockouts and counting.
He arrives on a 5-fight win streak — most recently Sergio Mendoza, TKO R2. Streaks like that don't stay unnoticed for long.
And here's the scary part: he's 26. 41 pro fights before most fighters hit their prime — the ceiling is nowhere in sight.
Recent Fights
Sergio Mendoza
TKO R2 · Apr 12, 2026
Korakuen Hall, Tokyo, Japan
Christian Araneta
Decision (Split) · Jun 18, 2025
Ota City General Gymnasium, Tokyo, Japan
Songchai Songklod
KO R3 · Feb 21, 2025
Singmanassak Muaythai School, Pathum Thani, Thailand
Masataka Taniguchi
Decision (Split) · Dec 14, 2024
Sumiyoshi SportsCenter, Osaka, Japan
Saravut Rongpig
TKO R2 · Oct 4, 2024
Singmanassak Muaythai School, Pathum Thani, Thailand