JOE JOYCE WILL defend his WBO Interim World Heavyweight title against the Chinese giant Zhilei Zhang at the Copper Box Arena on Saturday, 15 April, live on BT Sport. It will be a first defence of the belt for the 'Big Juggernaut' Joyce, 15-0 (14 KOs), who put himself first in line for a shot at the full WBO title with a thrilling victory over Joseph Parker in September of last year in Manchester.