Former boxer Shannon Briggs of the U.S. stares at Ukrainian heavyweight boxing world champion Vladimir Klitschko (R) during a news conference held with Alex Leapai of Australia (not seen) in Duesseldorf April 22, 2014. Briggs crashed into the news conference to demand for a title fight against Klitschko. Klitschko will be facing Leapai in a title match on April 26 in Oberhausen. REUTERS/Ina Fassbender (GERMANY - Tags: SPORT BOXING TPX IMAGES OF THE DAY)