Dylan Hartley's season is over, a concussion making him unavailable for England's tour of South Africa.
Northampton Saints have confirmed centre Rob Horne has been forced to retire from rugby at the age of 28.
Ashley Johnson is investigating the possible source of the substance which resulted in him failed a drugs test.
England's options for their tour of South Africa are likely to be further restricted, with Jonathan Joseph ruled out for the season.
Kane Palma-Newport's cat Clunk has been missing for a week and he is offering a signed shirt to anyone who helps return his pet.
Bath's hopes of finishing in the top six are all but over after losing to Saracens, who guaranteed a place in the semi-finals.
Leicester Tigers' play-off bid suffered an unexpected setback when Northampton Saints pulled off a derby double at Welford Road.
Rob Vickers' late try secured a pulsating 35-30 win over Sale Sharks to propel Newcastle Falcons into the Premiership's top four.
Scotland fly-half Duncan Weir has become Worcester Warriors' 10th signing for next season after agreeing terms on a one-year deal.
Denny Solomona will miss the rest of the Premiership season after Sale announced they will not appeal against the winger's four-week ban.
Director of rugby John Kingston will depart Harlequins at the end of the season, the Premiership club have confirmed.
Exeter Chiefs are assured of a top-four finish in the Premiership after scoring six tries in an emphatic win over Gloucester.
Ruthless Saracens scored nine tries in their latest thrashing of Northampton Saints, while London Irish eased to victory at Harlequins.
Wasps' Danny Cipriani has calmed fears over the head injury he sustained against Sale Sharks on Friday.
Wasps looked to have done just enough to hang on against Sale, before Marland Yarde won the game for the Sharks in thrilling fashion.
Exeter Chiefs have announced the signing of Alex Cuthbert from next season, the Wales winger signing a three-year deal.