Joe Joyce defends his WBO Interim World Heavyweight title against the Chinese giant Zhilei Zhang at the Copper Box Arena. Joe Joyce defends his WBO Interim World Heavyweight title against the Chinese giant Zhilei Zhang at the Copper Box Arena. Joe Joyce defends his WBO Interim World Heavyweight title against the Chinese giant Zhilei Zhang at the Copper Box Arena. Joe Joyce defends his WBO Interim World Heavyweight title against the Chinese giant Zhilei Zhang at the Copper Box Arena.