Tight-head prop Adam Jones is set for his 50th cap, while Roberts will be winning his fourth cap in a fourth different position, having already played at wing, full-back and inside centre for his country.

BBC: Cooper gets Wales nod over Peel

"It's no coincidence that the phrase 'je ne sais quoi' is used to describe something so beautiful and elegant that it is seemingly indescribable, " said Erin Swift, a Manhattan-based set designer, prop stylist and author of the new book, "French Accents: At Home With Parisian Objects and Details" (Clarkson Potter).

WSJ: The Art of French Molding

Another Ulster error at the set-piece gifted the ball to the opposition and prop Balan drove over for a converted try to make it 15-8.

BBC: SPORT | Rugby Union | European Club | Ulster 8-24 Biarritz

Just two minutes later the Welsh were in for a second, this time through prop Thomas, after Morgan's cross-field kick found Luke Charteris in space and his basketball pass set the front-row on his way.

BBC: Benetton Treviso 33-35 Dragons

The change in scrum fortunes was illustrated when prop Al Baxter, a victim against England in the past, won a penalty from Sheridan at the set-piece, which Giteau landed to regain the lead.

BBC: England 14-28 Australia