There were wins for Sale and Connacht in the Challenge Cup on Saturday while London Irish lost away to Grenoble.
World Cup winner Ben Franks could make his London Irish debut in Saturday's Challenge Cup trip to Grenoble.
A look back on all the Challenge Cup action from Saturday including Cardiff Blues v Calvisano and London Irish v Agen.
Promoted Worcester kept up their impressive start to the season with a bonus-point 28-20 win over Newcastle at Sixways.
Gloucester just held off a determined Worcester challenge to win a thrilling Aviva Premiership game 24-22 at Kingsholm.
England captain Chris Robshaw makes his Harlequins return on Saturday when they travel to Bath.
Worcester have signed Georgia's World Cup hooker Jaba Bregvadze from Toulouse.
Sale bounced back from their Saracens loss by recording a 27-13 home win over Aviva Premiership newcomers Worcester on Friday.
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