Ronaldo drilled a penalty against the woodwork as football exploded back into life with a remarkable start in the semi-final second leg between Juventus and AC Milan.

The lethal striker had a golden opportunity to put the hosts ahead with 15 minutes gone after a lengthy VAR check adjudged a handball to have taken place inside the penalty area, but he could only find Italy goalkeeper Gianluigi Donnarumma's right-hand post in an extraordinary passage of play that ended with Ante Rebic being sent off for a wild high challenge after Milan had cleared the ball.