Real Madrid superstar Cristiano Ronaldo recently paid a visit to one of MMA's biggest stars, "The Notorious" Conor McGregor.
Ronaldo, who is currently in Las Vegas on holiday, popped into the gym where McGregor has been preparing for his UFC 202 fight.
The Portuguese star stepped into the octagon to pose for a photo with the fighter as he prepares for his rematch with Nate Diaz.
A few hours later, McGregor posted a different picture of the pair, and had a special message for the Euro 2016 winner.
Do you think Ronaldo would be brave enough to take on an MMA fighter in the ring?