Northampton marched to a 40-17 Premiership bonus-point win over 14-man Leicester as they reinforced their status as table toppers on derby day.
Harlequins produced a stunning upset as they reached the Champions Cup semi-finals by beating French heavyweights Bordeaux-Begles 42-41.
Northampton charged through to the Investec Champions Cup quarter-finals with a 24-14 win over Munster.
It's been eight years since the Premiership had more than three clubs make it to the Champions Cup quarter-finals, but there remain six in play this season.
Northampton showed why they are top of the Gallagher Premiership, beating champions Saracens 41-30, while Leicester held off Newcastle in a dramatic 19-13 victory.
England internationals Kyle Sinckler and Lewis Ludlam will join Toulon next season, the French club's president Bernard Lemaitre said.
England pair Marcus Smith and Alex Mitchell to join up with the rest of the squad on a three-day Six Nations training camp to continue rehabilitating their injuries.
Northampton Saints have announced Courtney Lawes will leave the club at the end of the 2023/24 season to join French side CA Brive.
England international Lewis Ludlam will leave Northampton at the end of this season ahead of an expected move to France.
All of the details from Saturday's three Gallagher Premiership matches as Northampton, Bristol and Saracens all won.
Munster conspired to suffer defeat from the jaws of victory in the Champions Cup, losing 26-23 to 14-player Northampton Saints at a stunned Thomond Park.
In Behind the Whistle, former Premier League referee Chris Foy goes through a selection of key match decisions from the latest EFL action.
Northampton mounted a stunning fightback to beat Sale 21-17 and moved to the top of the Gallagher Premiership table with a sixth successive victory.
Bath top the Gallagher Premiership at Christmas after winning an absorbing battle with fellow title contenders Harlequins 25-17 at the Rec.
Tommy Freeman scored two tries as Northampton opened their Champions Cup campaign with a three-try 28-19 victory away to Glasgow.
Courtney Lawes has told Sky he would still represent the British and Irish Lions in Australia in 2025 if selected, despite retiring from England duty.
Saracens dealt with the early loss of three key players to make it four wins in a row as they rain in six tries during a thumping 38-10 victory over Harlequins.
A round-up of Sunday's Premiership action as Northampton Saints moved back into the top-four and Saracens secured a bonus-point win at the Newcastle Falcons...
Northampton earned their first Gallagher Premiership win of the season by beating winless Newcastle 16-14 at Kingston Park.
Test centurion Courtney Lawes has revealed he will retire from England duty following the Rugby World Cup.