Oscar Valdez landed a knockout of the year contender against Miguel Berchelt to become WBC Super Featherweight world champion Photo Credit: Mikey Williams/Top Rank via Getty Images In the much-anticipated Mexican Derby, it was Oscar Valdez that became the new WBC Super Featherweight champion, and a two-weight world champion, with a stunning tenth round knockout win over the long-serving former champion, Miguel Berchelt. The contest topped the latest Top Rank offering from The Bubble inside the MGM Grand, Las Vegas. Valdez was having just his second contest at the weight after serving as a Featherweight world champion, while Berchelt had reigned as WBC champion for four years, spanning six successful title defences.