Republic of Ireland boss Giovanni Trapattoni faces an anxious wait as three of his players prepare to undergo scans on Monday.
Key midfielder Glenn Whelan damaged a hamstring 20 minutes into Stoke's 0-0 Barclays Premier League draw with Liverpool and will be assessed when he meets up with the squad in Dublin.
He joins Leicester defender Sean St Ledger and Sunderland winger James McClean on the injured list with striker Kevin Doyle having already been ruled out with a thigh problem.
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