Winger Mark Cueto is a doubt for England's opening Rugby World Cup match against Argentina in Dunedin on Saturday night.
Cueto has been struggling with a back problem since he was forced off after 21 minutes of England's warmup game against Ireland last month.
Cueto has tweeted that he's still struggling.
If the 31-year-old misses the game, London Irish full-back Delon Armitage is expected to start on the wing.
