Threerookies started on defense: Dougie Hamilton, Matt Bartkowski and Krug, who was called up from Providence of the AHL after Seidenberg was hurt early in the first period Monday night.
Experienced Scarlets duo Dafydd Jones and Mark Jones were named alongside the threerookies, while the Dragons have Lewis Evans, Dan Lydiate, Jason Tovey and Luke Charteris in caretaker Wales coach Robin McBryde's squad.