Castres win another penalty and Rory Kockott puts them in the leas by 3

Romain Cabannes receives treatment and is allowed to play on after a slight knock

Castre make their way into Clermonts half and win a penalty, Rory Kockott slots it to get Castres first points

Brock James gets Clermont on the scoreboard early with a easy penalty

The teams come out to a packed Stade Marcel Micelin, we are ready for kick off

Clermont welcome back Kayser, Bonnaire and Chouly, Brock James comes in at fly half with Byrne in at fullback. Castres have lost Diarra but have made six changes to the side that lost to Bayonne. Saimone Taumoepeau and Mathieu Bonello come into the front row for Brice Mach and Yannick Forestier, Richie Gray returns at lock while Piula Faasalele takes over from Diarra. Max Evans gets a start ahead of Marcel Garvey.

Good afternoon and welcome to Ultimate Rugby's coverage of the Top 14 quarter final between Clermont and Castres. The winner of this semi final will meet Montpellier in the semi final. Clermont have home advantage heading into this game and they have plenty of time to recover after their defeat in the Heineken Cup as they are coming off the back of a win against Perpignan. Castres will be hoping to produce some of the magic that they did in last years semi final win over Clermont. Castres will need to improve their game after a away defeat to Bayonne in the final round. Clermont are hot favourites and they have one victory and a draw over Castres so far this year.