Both teams will now lock horns on May 5 in the second-leg semifinal, and whoever wins that clash will progress to the finals of the tournament.
Although the plans for a Super League appear to be dead in the water with all of the original 12 clubs involved, apart from Real Madrid and FC Barcelona, pulling out in the face of widespread opposition, Real Madrid president Florentino Perez
The announcement on Sunday, made by 12 founding clubs including Manchester City, Chelsea, Arsenal, Liverpool, Manchester United and Tottenham Hotspur, was met with widespread criticism.
Atletico were held to a 1-1 draw away to Betis in a game where Yannick Carrasco put them ahead after just five minutes only for Cristian Tello to equalise in the 20th minute of the game on Sunday
Iago Aspas hit the post for Celta with seven minutes left to play before Marco Asensio scored Real Madrid's third goal on the break in the fourth minute of injury time on Saturday, Xinhua news reports.
Madrid had reached the semifinals or better in eight straight seasons between 2010-11 and 2017-18 before losing to Ajax in the last 16 in 2019 and to Manchester City last season.
Elche once again showed how much they have improved since Fran Escriba returned as coach and Dani Calvo's 61st minute header off the underside of the bar gave them the lead against a lackluster Real Madrid, who once again failed to perform against a rival in the bottom half of the table on Saturday
Wednesday's 3-0 win at home to Elche moved Barca a point above Sevilla into third place in La Liga, five points behind Atletico Madrid, but with an extra game played, Ronald Koeman's side needs all three points
Barca coach Ronald Koeman said in his pre-game press conference that this game and Saturday's trip to Sevilla were vital for his side's title chances, and he made changes to try and keep his squad fresh
Barcelona on Wednesday night trailed 2-0 in the 88th minute before an own goal and a header from Jordi Alba saw them take the game to extra time, reports Xinhua news agency.
Saturday's result leaves Real Madrid seven points behind league leaders Atletico Madrid, who have two games in hand and just a point ahead of Sevilla, who won away to Eibar earlier in the day
Zinedine Zidane rested some first-team regulars, but a side containing Lucas Vazquez, Marcelo, Isco and Casemiro should still have been far too strong for their rivals.
Sevilla, on Saturday, dominated the ball for nearly all of their game against second division Leganes, but it wasn't until five minutes from time that the Argentinean's strike broke down their stubborn rivals, reports Xinhua news agency.
I have no explanation for tonight. We've had good and bad moments in games like today's. Especially at the beginning, when they scored a goal after three minutes. We had time to get back into the game and then things
Ferran Torres on Tuesday night became the first Spanish player to score a hat-trick against Germany and it was also the first time Spain have ever scored four goals - let alone six - against Die Mannschaft. Nevertheless
Casemiro and Hazard are upbeat and doing well. They're not happy about what's happened, but in terms of how they're doing mentally and physically
Ramos touched the landmark figure when he netted a goal in Real Madrid's 3-2 win over Inter Milan in the Champions League.
"We had chances in the first half. We needed to the first goal to open up the game and it came from a deep central-position from Eden, who's a player that has the ability to turn rapidly," the club's official website quoted Zidane as saying.
29-year-old Hazard is yet to make an appearance for Real Madrid, and there are doubts as to whether he will be fit for the El Clasico against Barcelona later this month.