Ospreys wing Eli Walker has withdrawn from Wales's World Cup squad because of a hamstring injury.
The 25-year-old, capped once for the Dragons, was himself a late call-up after full-back Leigh Halfpenny and scrum-half Rhys Webb both dropped out of the team.
Walker's withdrawal leaves Wales with three specialist wings in Hallam Amos, Alex Cuthbert and George North, while Bristol fly-half Matthew Morgan can also play in the position.
Twice-capped Gloucester back-rower Ross Moriarty, 21, has taken Walker's place ahead of the Dragons' first World Cup game against Uruguay on Sunday.