Neath-Swansea Ospreys utility Shane Williams is facing a fight to be fit ahead of Wales' final World Cup pool match against New Zealand in Sydney on Sunday.
The Test winger, who can also slot in at scrum-half, was expected to get a run in the eagerly awaited match but is battling the flu.
The news is further bad news for coach Steve Hansen, who lost OspreyS prop Duncan Jones with a fractured fibula during the Italy clash.
Wales won that match 27-15 to secure their place in the World Cup quarter-finals.
Better news for Hansen is that Gareth Thomas, Sonny Parker and Kevin Morgan, who all took knocks in the crucial match against Italy on Saturday, but are all expected to be available for selection this weekend.
Wales have not beaten New Zeland since 1953, but with the All Blacks have been short of competitive matches in this year's cup, giving rise to hope that this could be the hour of success.
Whenever Bedlinog tackle Penallta a massive fixure is guaranteed but this Sunday there will be even more emphasis placed on the two rivals when they contest the SSE Swalec Plate final at Principality Stadium.
Ahead of their SSE SWALEC Bowl Final clash with Taffs Well at Principality Stadium on Sunday, Burry Port share their #FABXV nomination with WRUTV in the search for Welsh rugby's greatest volunteers. Everyone can get involved by sending nominations via twitter to @WRU_Community using the hashtag #FABXV
Cardiff Blues prop Gethin Jenkins and Ospreys centre Ben John look ahead to the first game at Principality Stadium in Saturday's double header which is promising to be a special occasion for all Welsh fans.
Carmarthen Quins Director of Rugby Ian Jones and committee member Jeff Thomas along with Llandovery chairman Handel Davies look ahead to Sunday's SSE SWALEC Cup showdown where both teams are out to prove 'West is best'
SWALEC ambassador Shane WIlliams is looking forward to Sunday's Finals Day where the Cup, Bowl and Plate offers a great opportunity for players and teams to experience the magic of playing at Principality Stadium
Carmarthen Quins coach Richard Kelly believes it is an exciting time to be part of the Scarlets region as his side take on local rivals Llandovery in the SSE Swalec Cup final on Sunday, as WRU TV's Graeme Gillespie discovers