Experienced Scarlets duo Dafydd Jones and Mark Jones were named alongside the three rookies, while the Dragons have Lewis Evans, Dan Lydiate, Jason Tovey and Luke Charteris in caretaker Wales coach Robin McBryde's squad.
Wales named an initial 32-man squad for north America tour which was reduced to 26 when four Dragons players - Charteris, Jason Tovey, Lewis Evans and Dan Lydiate - were ruled out because of the Heineken play-off.
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