Saracens will appeal against what they described as "heavy-handed sanctions", insisting they are not guilty of any wrongdoing.
Premiership and European champions Saracens have been hit with huge sanctions for salary-cap breaches.
A late Harry Williams try proved decisive as Exeter Chiefs came from 14 points behind to overcome Worcester Warriors.
Saracens were on the brink of a second defeat in three Premiership games but they battled back to defeat London Irish.
Taqele Naiyaravoro impressed again as Northampton maintained their winning start to the Premiership season on Friday.
Saracens demonstrated their strength in depth with a victory at Welford Road, outscoring Leicester Tigers by three tries to one.
Northampton Saints and Gloucester followed up narrow away wins on the opening weekend by easing to home successes in the Premiership.
Exeter Chiefs fell to a narrow Premiership defeat at Bath, as Stuart Hogg's first appearance ended in disappointment.
European and Premiership champions Saracens are expected to be without European Player of the Year Alex Goode until the end of February.
Wasps fell just short in their comeback bid as London Irish made a winning start in their return to the Premiership.
Northampton Saints claimed a win over the reigning champions at Allianz Park on the opening weekend of the Premiership season.
Nathan Hughes made a big impact on his Premiership debut for Bristol Bears, while Luke Morahan claimed a brace in an emphatic derby win.
MMA promotion Bellator has signed former England rugby union star James Haskell, who is expected to make his debut in 2020.
It will be a family affair at Sale Sharks next season after twins Daniel and Jean-Luc du Preez agreed to join brother Robert.
An immediate Wallabies recall could come the way of James O'Connor after he signed a two-year deal with the Reds and Australian Rugby.
Vereniki Goneva will remain in the Premiership after Harlequins signed the 35-year-old Fiji international.