Joe Joyce weighed in for his heavyweight showdown with China’s Zhilei Zhang on Saturday. They are two imposing fighters. Zhang scaled 19st 12lbs while London's Joyce was 18st 4lbs. Joyce has come in lighter and leaner than his last fight when he weighed in a career heaviest before securing his breakthrough knockout victory over Joseph Parker. Please use Chrome browser for a more accessible video player Joe Joyce speaks ahead of his next fight against Zhilei Zhang and believes he is on his way to becoming world champion no matter who stands in front of him, even if it is…