Swansea defender Jazz Richards is the latest player to be called into the Wales squad ahead of their opening World Cup qualifiers.
The Wales Under 21 skipper, who made his senior international debut against Mexico in May, joins club-mate Ben Davies in being added to Chris Coleman's injury-hit squad for the meetings against Belgium and Serbia.
Davies, 19, was called up after Neil Taylor broke his ankle in the Swans' 2-2 draw with Sunderland at the weekend, and the South Wales club have revealed on their official website that Richards has replaced Huddersfield's Joel Lynch.
Coleman is also without Cardiff's Craig Bellamy, who has a calf problem, and Brighton midfielder Andrew Crofts, who has picked up an ankle injury.
Coleman had already been hit hard by injury problems with Celtic's Joe Ledley (groin), Sunderland's David Vaughan (groin), Wolves keeper Wayne Hennessey (knee) and West Ham's Jack Collison (knee) all absent from his initial 23-man selection.
But key trio Gareth Bale, Joe Allen and Aaron Ramsey are all available for the daunting clash with a Belgium squad including the likes of Vincent Kompany, Marouane Fellaini and Eden Hazard.