Arturo Vidal's 41st-minute penalty has given Juventus a 1-0 lead against Real Madrid at half time in the Champions League.
Paul Pogba was fouled by compatriot Raphael Varane after the French midfielder stole a yard on his marker, before the Chilean fired the spot kick high to Iker Casillas's left.
Earlier in the half, Cristiano Ronaldo went close when he drove at the heart of the Juve backline before flashing a shot just wide of the goal early on.
Gareth Bale also nearly scored when he fired a right-footed shot towards goal, but Gianluigi Buffon got down well to stop the effort on eight minutes.
Casillas made an instinctive stop from Pepe after the ball deflected off the defender following Pogba's low cross after 12 minutes.
The Spain international made another superb stop just before the half-hour mark when he kept out Fernando Llorente's header with his right-footed save.
Casillas was slightly less assured on 37 minutes when he palmed away Vidal's long-range effort, but Carlos Tevez scuffed the rebound inside the area.
