Juventus midfielder Miralem Pjanic admits it's been an education playing with Cristiano Ronaldo this season.
Ronaldo helped Juve successfully defend the Scudetto at his first attempt.
“A player must always be focused. Being mentally strong is crucial for a top-level player," explained Pjanic.
“An example is Cristiano Ronaldo. His concentration levels have always been out of the ordinary, both when things are going well and when they're less so.
“He's so strong in terms of head and so sure of himself that he always moves forward."