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Hon. Mention: Phil Babb. Came with a big reputation after performing on the biggest stage, made a terrifying number of mistakes and left on a free.
Liverpool have had an unfortunately large number of central defenders who have never lived up to the hype generated upon their arrival, and a similarly big crowd who have just simply not been good enough.
Somewhere in the middle come these two; neither natural centre-backs but who were asked to play the position on many occasions.
Igor Biscan is something of a cult hero on Merseyside; the slightly gormless looking Croat was a sought-after central midfielder when he joined the club and stumbled his way through several seasons at Anfield.
Occasionally, he would set the place alight with raking passes and sublime dribbles, but for the most part it was a case of looking entirely lost, making horrendous mistakes and generally making the watching public extremely nervous whenever he got hold of the ball.
The frustration came from watching him look the part in the Champions League—remember the Depor match?—then watching him fall over his own bootlaces the very next weekend against lower-league opposition in the cup.
Alongside Biscan in a defence made of the stuff of fans' nightmares in Djimi Traore.
The former Laval defender is often included in lists of Liverpool's "worst ever" players, an unfair and very short-sighted label for him.
Traore was far from the worst; he was perfectly capable of going on a run of good games at centre- or left-back. The trouble was, you knew a match-costing mistake was always just around the corner. Confidence and a bit of a lack of cohesion with his own body was part of the issue for Traore, which made his errors in big games all the more frustrating as they were eminently avoidable.
Lest we forget, both of these players were huge parts of Liverpool's 2005 Champions League success.
Oh, and Traore scored a hilarious own goal in the same season.