Wales fullback Leigh Halfpenny faces the possibility of missing this weekend's Six Nations clash with England at Twickenham through illness.
The Scarlets fullback missed the national side's captain's run in West London earlier today, too unwell to join the rest of the squad.
Halfpenny will be monitored by the Welsh medical team ahead of tomorrow's game.
Head coach Warren Gatland will face a dilemma selecting his backline should Halfpenny fail to recover in time.
The 29-year-old played a pivotal role in last weekend's 34-7 victory over Scotland in Cardiff, with two tries and impeccable performances from the tee and in defence.
Gatland's current options to replace Halfpenny are fly-half come fullback duo Rhys Patchell and Gareth Anscombe. This would, however, break up the strong Scarlets contingent in the Welsh backline, with Worcester Warriors' wing Josh Adams the only back not playing for the region.