Former Juventus and Italy striker Alessandro Del Piero has been ruled out of Sydney FC's A-League match against Central Coast Mariners on Saturday due to tightness in both hamstrings.

The Italian star failed to train during the week and Sydney made a late call not to risk Del Piero, who signed a two-year contract with the Sky Blues in early September after a 19-year career with the Serie A powerhouse.

Del Piero carried the soreness into his 800th career game last Sunday but scored for the third consecutive week.