Two-time Olympic gold medalist and three-time world amateur boxing champion Zou Shiming of China works out with trainer Freddie Roach (L) at Wild Card Boxing Club for his upcoming professional boxing debut, in Los Angeles, March 20, 2013. [Photo/Agencies]

Two-time Olympic gold medalist and three-time world amateur boxing champion Zou Shiming of China laughs as he works out at the Wild Card Boxing Club while preparing for his upcoming professional boxing debut, in Los Angeles, March 20, 2013. [Photo/Agencies]