Exiles clash the ultimate test for Ospreys, says Williams

OSPREYS star Shane Williams has described tomorrow night’s Heineken Cup showdown against in-form London Irish as “the ultimate test”.

And Wales’ record international try-scorer knows the Ospreys cannot afford another defeat after a late Paul Sackey score edged a tense 19-14 Pool Three verdict for Toulon last weekend.

With twice European champions Munster also in the Ospreys’ group, Williams and company must get it right when the Aviva Premiership leaders arrive at Liberty Stadium.