WBA/IBO/WBO/IBF heavyweight champion Wladimir Klitschko is training hard at the Lucky Street Boxing Gym in Hollywood, Florida. Klitschko is preparing for his upcoming fight on April 26 against WBO mandatory challenger Alex Leapai in Germany. During his workout, former champion Shannon Briggs showed up at the gym. He took off his shirt and attempted to go after the champion. Briggs, inactive since Wladimir's older brother Vitai Klitschko battered him in 2010, was escorted out of the gym.