Kenyan underdog thrills boo boys to beat Russian boxer

Kenya's Rayton Nduku Okwiri (R) celebrates winning against Russia's Andrei Zamkovoi (L) during the Men's Welter (69kg) boxing match at the Rio 2016 Olympic Games at the Riocentro - Pavilion 6 in Rio de Janeiro on August 7, 2016. / AFP PHOTO

Kenya's Rayton Nduku Okwiri produced the biggest shock of the boxing so far at the Rio Games on Sunday when he defeated Russia's welterweight London bronze medallist on a split decision.

The 9,000-seat arena gave the Russian boxers and a smattering of their fans a few half-hearted boos, after all 11 of the country's fighters were cleared to compete in Rio despite revelations of rampant state-run doping across Russian sports.