5 greatest comebacks in UEFA Champions League history
#4 Liverpool - 4 Barcelona - 0 (Aggregate: Liverpool - 4 Barcelona - 3), 2018-19 semifinal
Trailing 0-3 from the first leg of their semifinal away at Barcelona, Liverpool were shorn of their two potent attacking threats Mohamed Salah and Roberto Firmino in the second leg.
Undeterred by the duo's absence, Divock Origi's first half goal gave the home side a 1-0 lead at halftime as Liverpool trailed 1-3 on aggregate. A quickfire second-half double from Georginio Wijnaldum brought Liverpool parity in the tie.
Origi completed the comeback 11 minutes from time to seal a memorable 4-3 win which put the Anfield club into a second consecutive Champions League final, where they would go on to win their sixth title in the competition.
Anfield had been the scene of many a memorable European night but there wouldn't be too many sweeter than this one, as Liverpool completed an unlikely comeback against tall odds to usurp their formidable Spanish visitors.