Premier League rivals Liverpool and Manchester City remain on a collision course for the Champions League final, after booking semi-final spots with draws against Benfica and Atletico Madrid respectively.
Liverpool set up a semi against Spain's Villarreal, after Roberto Firmino scored twice in a 3-3 second-leg draw and a 6-4 aggregate win over the Portuguese team.
Juergen Klopp's side were 3-1 up on the night, before the visitors struck twice late, adding a few nerves to what had appeared to be a comfortable passage.
Benfica forward Darwin Nunez saw an effort ruled out for offside, before Liverpool took the lead with a powerful header from a corner by defender Ibrahima Konate in the 21st minute.
The lead lasted just 11 minutes, before Benfica pulled level through Goncalo Ramos, who beat Alisson Becker, after a tackle from James Milner fell to him on the edge of the box.
Brazilian Firmino scored twice after the break, as Liverpool looked to make sure of a semi-final place for the third time in five seasons.
But Benfica stuck at the task well and pulled two goals back, with Roman Yaremchuk and Nunez both scoring with efforts that were initially ruled out for offside, but then allowed after video reviews. Nunez had an effort disallowed in stoppage time.
Meanwhile, Manchester City produced a disciplined performance to secure a fractious 0-0 draw at Atletico Madrid and reach the Champions League semi-finals 1-0 on aggregate.
Tensions boiled over in the closing stages and Atletico defender Felipe was sent off for a second yellow card, before the teams played out 12 minutes of added time.
The English champions and league leaders dominated the first half, and Ilkay Gundogan struck the post with their best chance, after a flowing move down the right.
Atletico enjoyed more possession after the interval and threatened to score the goal that would have taken the game into extra time, but were unable to break down the visitors' defence.
Bidding to win European club football's most prestigious trophy for the first time, City will play record 13-time champions Real Madrid in the semi-finals.
Reuters
