Wales call for wing wizard Walker

The 20-year-old made his Heineken Cup debut less than a year ago against Biarritz Olympique in the Round 6 contest and has scored tries this season against Benetton Treviso and Toulouse.

Wales interim head coach Rob Howley announced that Walker will be joined by Cardiff Blues back row forwards Josh Navidi and Andries Pretorius and second row duo James King (Ospreys) and Andrew Coombs (Dragons).

Pretorius, the 27-year-old Blues captain, was born in Nelspruit, South Africa, and qualifies on residency.

"We have put together a very experienced squad and complimented that by rewarding the in-form players with a call-up," said Howley.

"The players in the squad have been playing really well and we have been pleased with their individual performances.

"We have a group of players who know how to win big matches and have experienced success. We are adding to that, players who have stood out and performed well for the regions this season."

The 2012 Grand Slam Champions begin the defence of their title against Ireland at the Millennium Stadium on Saturday, 2 February, before facing France in Paris the following weekend.