Ajax had a goal controversially ruled out by the Video Assistant Referee on Wednesday, causing plenty of arguments following the technology's first-ever use in the Champions League.
The Dutch side were widely successful in attacking Real Madrid throughout the first half of Wednesday's last-16 clash in Amsterdam, and appeared to break through in the 37th minute on a goal from Nicolas Tagliafico.
The Argentine headed home a rebound on a corner kick following a parry from Thibaut Courtois but upon further review the goal was ruled out.
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It was ruled that Courtois was impeded by the offside Dusan Tadic, wiping out the goal to the frustration of the hosts and home supporters.