A brilliant performance from Castres won finished 6th in the regular season and will look to go on and defend their Top 14 title. Thank you for joining in on Ultimate Rugby's coverage of this Top 14 quarter final, Hope you enjoy the rest of the weekend action.

Full time here in Clermont and Castres have done the impossible by beating Clermont at home, in a repeat of the result from last years semi final. Castres will now go on to face Montpellier in the semi final. A shocking result for the Clermont men after a very terrible game for the men in yellow. Clermont looked to be gaining momentum towards the end of the first half after two yellows for Castres but brilliant kicking from Rory Kockott and awful discipline from Clermont allowed Castres to run away deserved victors.

TRY CLERMONT! Damien Chouly scores the try and James converts with only 2 minutes remaining

Less than five minutes to play and it looks like its going to be repeat of last years semi final

Castres really playing a smart game over Clermont, Clermont trying to attack through Napolioni Nalaga but knock on gives scrum to Castres

I can't believe this..

Rory Kockott slots the conversion to extend Castres lead

TRY CASTRES! Castres break through the Clermont defence through Remi Lamerat and touch down for the first try of the game

Dulin makes a great break but strong defence from Castres prevents a try

Rory Kockott misses his first penalty to extend Castres lead again.