Tenshin Nasukawa sends Floyd Mayweather a warning after stopping Taiki Naito in the first round

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Tenshin Nasukawa defeated his opponent Taiki Naito on Friday night with a stunning first-round knockout.

The referee had to stop the bout, as Nasukawa broke into a melee of punches that were too much for Naito to handle.

The kickboxing starlet is due to face Floyd Mayweather in a lucrative exhibition fight in Tokyo, Japan on New Year's Eve, and he sent his opponent a warning through delivering an absolutely explosive performance.

After doubts had been raised as to whether the fight would go ahead, Mayweather confirmed that he would take part in the nine-minute exhibition, despite having publicly stated that he was pulling out due to a significant change in circumstances.

Nasukawa’s knockout of Naito took his record to 28-0, impressive statistics for someone who is just 20-years-old.

Nasukawa had previously fought Naito when they were aged 16 and 18 respectively. On that occasion, Nasukawa won the fight by delivering a stunning head-kick.

Nasukawa will be pleased with his performance, having floored his rival three times in the first round before the referee put a stop to the contest.

Having backed his opponent into the ropes early on, Nasukawa bombarded Naito with a series of punches at high-speed, showcasing his boxing skills.

Watch the brutal and impressive stoppage below.

The undefeated Mayweather is likely to provide a much sterner test than Naito, but Nasukawa will not be short of confidence after this brutal knockout, and it’s unlikely that Mayweather and his team are taking their Japanese rival with a pinch of salt.

At less than half his age, the kick boxing prodigy is far from a risk-free opponent for the American.

Mayweather has confirmed that this will be a boxing fight, with no kicks allowed, although further details around weight have not been announced.

Mayweather has also commented on the possibility of a fight against UFC lightweight champion Khabib Nurmagomedov, stating that any potential contest would have to take place under boxing rules.

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