Kyle Sinckler will miss Harlequins' clash against London Irish at the weekend after being handed a one-week ban.
Northampton beat Harlequins 17-13 at Franklin's Gardens to move 13 points clear at the top of the Aviva Premiership.
Harlequins have signed Fiji back-row Natani Talei until the end of the season.
Henry Slade contributed 27 points as Exeter beat Harlequins 32-21 in their Premiership encounter at the Stoop.
A sold out Twickenham Stoop awaits Harlequins as they make two changes for their Aviva Premiership clash with Exeter.
Harlequins have confirmed wing Charlie Walker has signed a new two-year contract at The Stoop.
Wasps director of rugby Dai Young was thrilled with his side after they romped to a 37-6 Aviva Premiership victory over Harlequins.
Harlequins have signed prop Matt Shields on a permanent basis until the end of the 2015-16 season.
Harlequins lock George Robson is joining French Top 14 club Oyonnax from the start of next season.
It's an all-English draw as Leicester and Saracens book home semi-finals in the LV=Cup.
London Irish have signed flanker Joe Trayfoot from Aviva Premiership rivals Harlequins.
Bath, Leicester, Scarlets and Gloucester all recorded wins in the LV=Cup competition on Saturday.
Harlequins star Nick Evans is confident of retaining momentum despite losing several senior players to Six Nations duty.
Harlequins forward Will Collier has been ruled out for the rest of the season with a ruptured cruciate ligament.
Harlequins fought for a Champions Cup quarter-final place with a 47-19 win at Castres, but their efforts were in vein.
Conor O'Shea insists the agony of Harlequins' Champions Cup exit will spur them on for the rest of the season.
England head coach Stuart Lancaster is set to name Sale fly-half Danny Cipriani in Six Nations squad.
A first-half brace of tries against the run of play helped Wasps to a superb 23-3 Champions Cup win over Harlequins at the Stoop on Saturday.
Wasps boss Dai Young was full of praise for captain James Haskell after the victory at Harlequins.
Karl Dickson has signed a contract extension that will keep him at Harlequins until the end of the 2016/17 season.
With the Six Nations on a two-week sabbatical, we take a look at the championship so far.