Defending champion Andy Ruiz Jr., left, takes a right cross to the face during his fight against Britain's Anthony Joshua in their World Heavyweight Championship contest at the Diriyah Arena, Riyadh, Saudi Arabia early Sunday Dec. 8, 2019. (AP Photo/Hassan Ammar)
Defending champion Andy Ruiz Jr., left, takes a right cross to the face during his fight against Britain's Anthony Joshua in their World Heavyweight Championship contest at the Diriyah Arena, Riyadh,

Clash on the Dunes: Anthony Joshua beats Andy Ruiz Jr to regain world titles in Saudi Arabia