The youngster set the pace from the opening bell and swiftly took Kakutani down, showing his power and strength in the process, two things that had been questioned following back-to-back 10 round decision wins. Kakutani got back up but was quickly downed again and then again with the referee finally waving off the bout which was surprisingly one sided.
In total Kakutani lasted, officially, just 173 seconds. It was the second quickest loss of his career, lasting just a second longer than his bout with recent world title challenger Warlito Parrenas, though he did notably drop Parrenas himself before losing that.
Given that Kakutani had waited more than 3 years for a second domestic title fight, and had actually given Teiru Kinoshita a very close bout back in 2012, this result will be a real sickener for the well liked fighter. Saying that however we wouldn't be shocked to see him bounce back with another winning run, especially given that he's only 30.
For Ken Shiro however this result really does prove just how good he is, and may well be the final step he needs before fighting for a world title, possibly as soon as Summer. Interestingly he saw off Kakutani far quicker than Adrian Hernandez, who took 4 rounds to see off Kakutani in 2013 when Hernandez was the WBC Light Flyweight champion.
For fans interested in watching this one, it will be shown, we suspect in full, this weekend on Fuji TV as part of their Diamond Glove series.