Gloucester fly-half Danny Cipriani has discovered his punishment for the red card he received against Munster last weekend.
Wasps, without Christian Wade, battled back to draw with Bath, and Edinburgh battered Toulon in Saturday's European Champions Cup action.
Freddie Burns apologised after costing Bath a Champions Cup win over Toulouse with a botched try five minutes from time.
Exeter Chiefs made it six wins out of six in the Premiership after scoring three tries in quick succession in the second half.
Sam Simmonds will be forced to sit on the sidelines until well into 2019 after suffering a serious knee injury.
Saracens and Exeter Chiefs met in last term's Premiership final and they are making the early running once more this season.
Toby Flood's yellow card proved to be costly as Exeter Chiefs made it four Premiership wins out of four.
Saracens needed two late tries from David Strettle to secure a come-from-behind victory over Northampton Saints.
Danny Cipriani inspired Gloucester's comeback as a former Bath player denied the hosts victory at the Rec on Saturday.
Flanker Brad Shields will start his first Premiership game on Saturday when Wasps host last season's beaten finalists Exeter Chiefs.
Danny Cipriani produced a sensational pass for Charlie Sharples' try while Billy Twelvetrees kicked 17 points in Gloucester's victory.
Premiership-winner Carl Rimmer is embarking on life after rugby, having retired due to an artery problem that caused a stroke in training.
Exeter Chiefs number eight Sam Simmonds is the Premiership's top performer, according to Opta.
Saracens were far too good for Exeter Chiefs in the Premiership final, with Chris Wyles enjoying a glorious end to his career.
Joe Simmonds kicked 19 points as defending Premiership champions Exeter Chiefs set up a Twickenham showdown with Saracens for the title.
Ahead of the play-offs, we take a look at the some of the star Premiership performers during the regular season.