Challenge Cup clubs provide almost half the Wales team to meet England in their Rugby World Cup warm-up Test at Twickenham on Sunday.
Pool 2 side Scarlets boast three of the Wales back line and Pool 5 team Cardiff Blues have one as head coach Warren Gatland opts for the seven backs he fielded when Wales clinched the Grand Slam against Ireland in March.
Scarlets scrum-half Gareth Davies wears the No.9 shirt again and he is joined by team-mates Hadleigh Parkes and Jonathan Davies, who are at centre once more, while new Cardiff signing Josh Adams is on the wing.
Up front there is a further Scarlet in experienced hooker Ken Owens, while Pool 1 outfit Dragons have two players in the Wales back row in flanker Aaron Wainwright and No.8 Ross Moriarty.
The Wales bench is dominated by Challenge Cup players, with all but two of the eight coming from Scarlets, Dragons or Cardiff.
Elliot Dee (Dragons), Wyn Jones (Scarlets) and Dillon Lewis (Cardiff) are the front-row cover, Scarlets duo Jake Ball and Aaron Shingler complete the forward contingent, and Cardiff scrum-half Tomos Williams is named among the replacement backs.
Meanwhile, the England XV contains three players from Challenge Cup newcomers Leicester Tigers in fly-half George Ford, who captains the side, plus props Ellis Genge and Dan Cole. Ben Youngs, the Pool 5 club’s scrum-half, is on the bench.