SportsWarm-up: Joshua vs. Povetkin01:42This browser does not support the video element.Sports09/22/2018September 22, 2018World heavyweight champion Anthony Joshua is on a mission to defend his title when he takes on Russia's Alexander Povetkin at London's Wembley Stadium tonight. But the 28-year-old is up against an opponent with a pedigree of his own.Copy linkAdvertisement