Short ball to Esterhuizen but it's been lost forward, scrum Castres 5m from their own line

Scrum will be reset

Stoppage in play

Castres get back under immense pressure and have carried it back over their own line, scrum Quins 5m out

Jones breaks on the run back and finds Care who chips ahead and the race is on

Smith kicks ahead, Urdapilleta covers and clears

Box kick from Kockott onto Green who runs it back

Smith gets the match underway for Quins

Change for Harlequins as Dino Lamb has failed a late fitness test, Hugh Tizard starts with George Hammond coming on to the bench.

Castres host Harlequins in the opening round of the Champions Cup. Castres have won six of their 12 French Top14 matches to lie sixth in the table, while Harlequins have recorded five victories from nine games in the Premiership to sit fourth.