The Real Madrid star has named Ashley Cole as the toughest opponent he has ever faced.
There is no question the Cristiano Ronaldo has face many tough opponents, however, he has singled one out in particular as the toughest he has even come up against.
Ronaldo told Coach magazine: “Over the years I had some great battles with Ashley Cole – he doesn’t give you a second to breathe.
“He was such a tenacious player, quick, tough in the tackle – when he was at his peak.
“You knew it would never be an easy game.”
He added: “There is a big mutual respect between myself and Lionel Messi.
“The media like to make out like we have this big rivalry, but we don’t.
“It is not like we are good friends, but there is a mutual respect on both sides.”
Ronaldo has faced Chelsea 15 times as a United player but only scored just once, in the Champions League final in 2008.