His goal against Italian side Parma in a UEFA Champions League qualifying round tie in 1999 cemented him a place in Rangers folklore.

[5] He then joined Welsh side Cardiff City on a free transfer in 2003, with manager Lennie Lawrence being quick to sign him after missing out the previous year following his release from Rangers.

[7] Highly criticised as one of the main weak points in the Australia national team's defence under Frank Farina's tenure,[citation needed] Guus Hiddink's appointment sparked a tremendous improvement in his performance, culminating in an impressive performance in the second leg of the World Cup qualifying tie against Uruguay.

On 9 May 2006, Vidmar announced he was withdrawing himself from World Cup team selection for medical reasons, specifically an irregular heart rhythm.

On 14 February 2008, Vidmar announced his retirement and an end to his decorated playing career after the 2008 A-League Grand Final.