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Quite how Rafael Benitez had taken his team from that remarkable group stage qualification to the semi-final, no-one really knew, but here the Reds were facing the English champions—a team who had finished 33 points above them in the league table—for a place in the Istanbul final.
A goalless draw in the Stamford Bridge first leg was a good result, and Anfield was rocking for the club's biggest night in over 20 years.
Fans got into their seats early and were creating a raucous atmosphere in the build-up to kick-off, and things only got louder from there.
Just four minutes in, Milan Baros raced onto Gerrard's through ball and was clattered by Czech international teammate Petr Cech. The Chelsea goalkeeper could have been sent off, but instead play continued, and Liverpool's Spanish schemer Luis Garcia sent an effort towards goal which was cleared from underneath the crossbar by William Gallas.
No matter that no one knew if it was in or not, the Liverpool fans celebrated anyway. Referee Lubos Michel awarded the goal.
The Reds clung on for the remainder of the game amidst the type of noise not heard at Anfield for years.
At full-time, they had made it to Istanbul.
And we all know what happened there...