Juventus striker Carlos Tevez scored a second-half penalty as the hosts beat holders Real Madrid 2-1 in the Champions League semi-final, first leg, on Tuesday.
The irrepressible Argentine, playing some of the best football of his career, won the spot kick just before the hour when he was upended by Dani Carvajal on a breakaway and tucked it away to give Juve the edge after a pulsating, open game.
The home side's Alvaro Morata scored against his old club, although he declined to celebrate, in the ninth minute but Cristiano Ronaldo headed the equaliser for Real in the 27th.
Although Juventus are regarded as one of the most powerful clubs in Europe, Serie A's recent decline means they have been unable to keep up financially with the continent's elite and were regarded as relative lightweights among the semi-finalists.
They were given a painful reminder of the gap two years ago when Bayern Munich beat them 4-0 on aggregate in the quarter-finals but Tuesday's win suggests they are back near the top.