Juventus were many people's favourites to win the Champions League but they were in serious danger of being knocked out at the last 16 stage.
The Italian club were given a nightmare draw as they were paired to play Atletico Madrid in the first knock-out round.
Diego Simeone's side are known for being one of the most defensively efficient teams in football and that was on show in the first leg.
Max Allegri's side were beaten 2-0 in Madrid, with late goals from Jose Maria Gimenez and Diego Godin giving the Spaniards the edge going into the second leg in Turin.
Juventus desperately needed someone to step up and, like he always does, Cristiano Ronaldo was that man.
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He towered over Juanfran to give Juventus the lead in the 27th minute.
Ronaldo then made it a duo of headers in the second-half.
The Portuguese superstar met Joao Cancelo’s cross and powered a header towards goal.
It looked as if Jan Oblak had produced a wonder save as he clawed the ball away, but goal-line technology showed that the ball had just gone over the line.
Watch his first goal below:
Watch his second goal below:
Ronaldo’s aerial prowess has always been one of his best attributes.
And his double on Tuesday night led to Gary Lineker saying he is the best header of a football he’s ever seen.
You will struggle to find someone that is or has been a better header of the football than Ronaldo, to be honest.
Ronaldo then scored the winner with five minutes to go.
Juventus were given a penalty when Federico Bernadeschi was felled in the box.
Ronaldo stepped up and he powered his spot-kick past Oblak, sealing a remarkable comeback.
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