Jeff Hassler is down receiving treatment after what looked like an awkward fall.

Biggar regains the lead with a peanlty after Castres are guilty slowing the ball down

Biggar with a half break and deft a offload sets up an attack in the Castres 22.

Like any good open side, Tipuric is at the bottom of every ruck! This time he is illegal and gives Kockott the chance to level the score

Jeff Hassler makes a massive break up field with a well timed tight line. Eventually Castres scramble but are caught offside from the next phase. Chance for Biggar to take the lead

Breakdown is proving very physical right from the get go. But this time Bonnefond jumps the gun and is adjudged of playing the 9 without the ball.

Kockott is found guilty of feeding the second row at a scrum in his 22. Ospreys on the attack through now

Jones is offside at a maul, handing Kockott to get the first points of the game

Grosso is pinged for going off his feet, giving Biggar the chance to gain some territory. Meanwhile Samson is warming up on the touchline

Biggar takes the pressure off his side with a good put up field. Gray is down receiving attention after it looked like he hyper-extended his left knee.