Champions collided when Juventus and Floyd Mayweather Jr came together to celebrate Wednesday's Supercoppa Italiana triumph.

Cristiano Ronaldo guided Italian champions Juve to a 1-0 win over rivals and 10-man AC Milan in Saudi Arabia.

Ronaldo's 61st-minute header secured an eighth Supercoppa Italiana crown for Juve, one more than Milan.

And Ronaldo's Juve had a special guest afterwards - undefeated boxing great Mayweather posing for photos in Jeddah.

Mayweather was back in the ring last month, the 41-year-old American scoring a brutal first-round knockout victory in a mismatched exhibition fight against Tenshin Nasukawa.