Julian Alvarez slipped as he struck the penalty, but the ball flew into the top-left corner.
It looked like it was 2-2 in the Champions League last-16 shootout between derby rivals Atletico and Real Madrid.
What happened next was another one of those fine-margin VAR calls – but for a very unusual reason.
On review, Atletico’s Alvarez was judged to have touched the ball twice.
That is against the rules so it was chalked off – with no option for a retake.
Real then went 3-1 ahead before winning the shootout 4-2. All the talk afterward was about that decision.
What do the rules say?
Article 14.1 of the IFAB (International Football Association Board) laws of the game concerns penalties.
The rules state: “The kicker must not play the ball again until it has touched another player.”
That is the same law that stops people scoring a rebound if their own penalty hits the post.
If the same happened from a penalty during regular play, an indirect free-kick would be awarded to the opposition.