Carlo Ancelotti believes Gareth Bale is in the form of his life ahead of Sunday's El Clasico.
The world's most expensive player was substituted after an hour in his first experience of the biggest game in European football as Real Madrid lost 2-1 in Barcelona back in October.
However, Bale has since gone on to put injury and form concerns behind him, scoring 14 goals and providing 17 assists in 31 appearances - and the Real manager puts it all down to his genes.
"In the first game he was switching positions with Angel Di Maria at times, but now he is used to playing on the wing and the team is balanced so we won't change that," Ancelotti said.
"He is in good shape. His physical condition is very important for him and I am sure he will play a great game.
"We haven't done any special work with him to improve his fitness or speed. He just has great genes and has done the same work as everyone else.
"He is in really good condition and we are very happy with him. He had some problems at the start of the season but now he is looking good and we hope that will continue until the end of the season."
Real go into the game full of confidence as they have not been beaten since the autumn defeat at the Nou Camp and are four points clear of their great rivals.
"A Clasico is always important and always brings pressure," Ancelotti added. "The game is very important for the league and a Clasico is always distinct to the other games.
"Our idea is to be able to show our quality. We are desperate to play this game. We need to do what we have done well up until now which is attacking and defending well as a group."
Ancelotti confirmed that Karim Benzema had recovered from the thigh injury that kept him out of Wednesday's 3-1 win over Schalke and is likely to start.
Watch El Clasico live on Sky Sports 1 HD at 7.30pm on Sunday.