Scotland has made five changes and will field a new front line for Saturday's Six Nations match in Wales, where Grant Gilchrist won his 50th cap.
Jamie Ritchie, Flanker Jamie Ritchie, is ready to play after undergoing surgery for the hamstring injury he sustained last weekend in the opening victory over England.
Ritchie is being replaced by Sam Skinner, and Pierre Schoeman (WP Nel) join hooker Stuart McInally at the front row.
Sione Tuipulotu from Glasgow is in the centre for his third cap.
Flanker Rory Darge will make his Scotland debut. Cam Redpath, who has recently recovered from a serious injury to his knee, will also be among the replacements. He is set for his first Test action in Scotland since his victory at Twickenham 12 month ago.
Zander Fagerson (George Turner) and Rory Sutherland are dropped to the bench. Sam Johnson is now free to play for Glasgow against Munster.
Captain Stuart Hogg's 90th Scotland appearance at Cardiff's Principality Stadium is 10 years after his debut there.
More information to come.