Real Madrid, chasing a fourth consecutive Champions League title, needed a goal in the final minutes to pull out a 2-1 win against Ajax in the first leg of the round-of-16 tie.
The Blancos also got help from the Video Assistant Referee (VAR) on Wednesday, which made its first significant intervention in Europe's elite club competition with the erasure of an Ajax goal in the first half, reports Efe news.
Real Madrid struggled to play out from the back and the handful of opportunities they got on the counter came to nothing. Ajax keeper Andre Onana, who has been struggling in domestic play, was never seriously troubled in the first half.
Defensive lapses by the visitors set the tone, often forcing Bale and Vinicius to drop back and help. And when they didn't, Ajax ran riot.
Courtois likewise had to be sharp to smother a shot by Hakim Ziyech just seconds before the Belgian international conceded off a corner kick.
The Real Madrid stopper turned aside Matthias de Ligt's header off the Daley Blind corner, but Nicolas Tagliafico was there to hammer in the rebound to make it 1-0 for Ajax in the 37th minute.
Ajax players and supporters went wild, but the celebration ended abruptly when referee Damir Skomina disallowed the goal after an extended look at the replay on the sideline VAR monitor.
He ruled that a slightly offside Tadic had obstructed Courtois.
Unable to maintain their frenetic first-half pace, Ajax largely ceded possession to the Blancos and the seemingly inevitable goal came at the hour mark.
Vinicius sliced through the defence and charged across the area before leaving the ball for an onrushing Benzema to put the visitors up 1-0.
The three-time defending champions tried to put the match to bed, but Ziyech got the equaliser in the 75th minute and Ajax looked poised to secure the draw until Marco Asensio, who came on for Benzema, scored in the 87th minute with an assist from Carvajal.
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