In an entertaining encounter,&nbsp; Nigeria leads Japan 3-2 at halftime in a Group B match of the Rio 2016 Olympic Games.<br /><br />A double from Oghenekaro Etebo and Umar Sadiq&rsquo;s rebounded effort puts the African champions at the ascendancy.<br /><br />&nbsp;In the space of six minutes, the thriller procured four goals. <br /><br />Nigeria scored first through AS Roma youngster Umar who cashed in on a rebound from Imoh Ezekiel&rsquo;s goal-bound shot.<br /><br />It was one-all two minutes after thanks to Shinzo Koroki&rsquo;s goal from the penalty spot after Stanley Amuzie was penalized for a poor tackle in the box.<br /><br />Etebo restored the advantage for Nigeria before Japan drew level yet again thanks to Takumi Minamino who placed the ball underneath Emmanuel Daniel.<br /><br />Amuzie then tried to atone for his earlier error with a powerful drive with his left foot in the 20th minute.<br /><br />Moments after the flat footed Shehu Abdullahi almost gave the Japanese a gift but Nigeria&rsquo;s blushes was spared.<br /><br />There was still one more goal in the intriguing battle and it was Umar who spotted Etebo. The former Warri Wolves forward unleashed a perfect finish.<br /><br />Igho Kingsley <br /><br />Photo Credit : thenff.com<br />