"Tsitsipas is a big player, tough. After almost four hours of playing, he was tired especially in the fifth set but you have to give him credit for that fight.
"I am very happy with my reaction after losing the third set. I stayed calm despite a different story inside.
"He has the motivation for the final on Sunday but this is Rafa's house after winning so many times. But he has good memories from 2015 and will try to play at his highest level to win the title."