Recently, I've been following the videos of Nasukawa Tenshin and I can't help but feel that combat sports are really brutal. It's possible for someone to lose consciousness in just one hit.
The first time I heard of him was when my friend was watching his fight against Mayweather. At that time, I thought he looked weak and wondered how he was knocked down so easily by Mayweather. Later, I found out that he was actually a prodigy who was hailed as a once-in-fifty-years talent in kickboxing and had won championships. My friend said he was a kickboxer, but in that fight, he couldn't use his knees or legs and had half his arsenal taken away. So, I shouldn't have called him weak, it was too one-sided. The rules were not in his favor, and he might not have been used to boxing matches, yet he had to fight against a seasoned veteran in boxing.