Greece defender Sotirios Kyrgiakos signed from AEK Athens at the start of the 2009-10 season.
The veteran signed a two-year-deal with the option of a further year, and in doing so ended Rafa Benitez's search for defensive cover following the departure of Sami Hyypia.
Trikala-born Kyrgiakos began his career at the Panathinaikos academy in 1996 before being loaned out to Greek second division club Agios Nikolaos.
He was recalled by his parent club in 2001 and the powerhouse quickly established himself as a regular member of the Panathinaikos first team, helping them to a Greek league and cup double in 2004.
In January 2005, Kyrgiakos acquired his first taste of British football as he joined Glasgow Rangers on loan.
After clinching the Scottish title and League Cup, the deal was made permanent in the summer of the same year as the 6ft 4ins defender agreed a one-year contract at Ibrox.
The Bundesliga was his next destination with the tough-tackling stopper sealing a transfer to Eintracht Frankfurt in 2006, where he spent two seasons before joining AEK.
A knee injury kept Kyrgiakos out of Greece's historic triumph at Euro 2004, although he started each of his country's three matches in the same tournament four years later.
The powerful centre-back made his Liverpool debut in a dramatic victory over Bolton Wanderers at the Reebok Stadium on August 29, 2009.