Cardiff Blues flanker Sam Warburton will miss this weekend's Heineken Cup clash against Glasgow Warriors.
The Wales captain suffered a stinger in the 26-30 loss to Australia last Saturday and is awaiting the results of a scan on the injury, according to WalesOnline.
Losing Warburton is one of a series of blows for Phil Davies' side, who are already without Wales internationals Bradley Davies, Owen Williams, Cory Allen and Gethin Jenkins.
The Blues surprisingly defeated Heineken Cup champions Toulon in Round Two of this year's competition to bounce back from a heavy defeat away to Exeter Chiefs.
They now face a nervous wait for news on the extent of the damage to Warburton's shoulder over the next few days.