Updated

Cristiano Ronaldo scored a hat trick to lead Real Madrid to a commanding 3-0 win over city rival Atletico Madrid in the first leg of their Champions League semifinal on Tuesday.

Ronaldo scored with a header in the 10th minute, with a strike into the top corner in the 73rd and a close-range shot in the 86th to give the defending champions a comfortable lead going into next week's second leg at Atletico's Vicente Calderon Stadium.

Monaco hosts Juventus in the first leg of the other semifinal on Wednesday.

Ronaldo opened the scoring after Atletico's defense failed to fully clear a cross into the area. Midfielder Casemiro sent the ball back in with a bouncing shot and Ronaldo got ahead of defender Stefan Savic to nod it past Atletico goalkeeper Jan Oblak.

Ronaldo added to the lead after Atletico defender Filipe Luis lost the ball in a challenge with the Portugal star, who entered the area and fired a right-foot shot past Oblak into the upper corner.

He scored his 10th Champions League goal of the season with a low shot from inside the area after a pass by Lucas Vazquez.