His fight in Japan was rather stroll through the park. Floyd Mayweather is great boxer and even at his age he still dominated 20 years younger Japanese fighter. He probably made deal with organisation when exactly to knock Nasukawa *kick-boxer my ass*. However world recognized farce.
Can you even be realistic just for a second? This fight was not even about Tenshin having a age advantage over Mayweather, Tenshin was outmatch even before the fight started he was undersized against Mayweather by 3 inches, oh and did anyone notice there was no weight class? Yes that's right Mayweather entered the fight weighted at 149.5 lbs while Tenshin only weighted at 125 lb. You see all the differences from a physical point of view as well as experience there is no doubt Tenshin has lost this fight.