Only one fixture takes place in the Challenge Cup on Friday when Cardiff host Pau in their pool 4 clash.
Form: The clubs are meeting for the first time in European competition. Pau have lost back-to-back Challenge Cup games in Wales, managing just nine points in those two fixtures. The Blues have won five of their previous six home matches in the competition (L1). The 2010 winners have won back to back games in the competition but haven't won three on the bounce in the Challenge Cup since their first six games in the competition. Pau have lost 11 of 13 games since reaching the final in 2005, losing the last eight in a row.
Cardiff Blues: 15 Dan Fish, 14 Alex Cuthbert, 13 Cory Allen, 12 Garyn Smith, 11 Blaine Scully, 10 Steven Shingler, 9 Lloyd Williams, 8 Josh Turnbull, 7 Ellis Jenkins, 6 Macauley Cook, 5 James Down, 4 Jarrad Hoeata, 3 Taufa'ao Filise, 2 Kirby Myhill, 1 Gethin Jenkins
Replacements: 16 Matthew Rees, 17 Rhys Gill, 18 Scott Andrews, 19 Seb Davies, 20 Kristian Dacey, 21 Tomos Williams, 22 Jarrod Evans, 23 Matthew Morgan
Pau: 15 Charly Malie, 14 Louis Dupichot, 13 Santiago Fernandez, 12 Pierre Dupouy, 11 Bastien Pourailly, 10 Brandon Fajardo, 9 Thibault Daubagna, 8 Ben Mowen, 7 Sean Dougall, 6 Pierrick Gunther, 5 Daniel Ramsay, 4 Masalosalo Tutaia, 3 Sylvain Charlet, 2 Quentin Lespiaucq Brettes, 1 Jérémy Hurou
Replacements: 16 Lucas Rey, 17 Geoffrey Moise, 18 Joel Sclavi, 19 Fabrice Metz, 20 Giovanni Habel Kuffner, 21 Thierry Lacrampe, 22 Romain Buros, 23 Marvin Lestremeau
Date: Friday, October 21
Venue: BT Sport Cardiff Arms Park
Time: 19:15 local (18:15 GMT)
Referee: JP Doyle (England)
Assistant referees: Wayne Barnes (England), Gareth Copsey (England)