That is muay thai great Singdam Kiatmoo9 (Kiatmookao) getting KOed. it's the second time he gets KOed by spinning shit since crossing over to kickboxing but the other one was an unpredictable spinning heel kick from close distance. This one was even more shocking.
Singdam has been fighting for 20+ years (he fought Saenchai 11 times!) and must be really old now. For some reason he didn't adapt to kickboxing and if I see him getting KOed like that again I'll have a heart attack.