Featherweight boxer Robert Guerrero of the U.S. is reflected in a mirror as he hits a heavy bag during a media workout in Las Vegas, Nevada March 29, 2010. Guerrero will fight Michael Katsidis of Australia for a vacant WBA interim title at the MGM Grand Garden Arena in Las Vegas on April 9. REUTERS/Las Vegas Sun/Steve Marcus (UNITED STATES - Tags: SPORT BOXING)