Flood stars for impressive Tigers
England fly-half Toby Flood kept Leicester on course for an eighth successive Aviva Premiership final with a fabulous performance at Northampton.
Flood, who has dropped to third in the England fly-half pecking order, proved he was back to his best with a 25-point haul as Leicester demolished their great rivals 35-21 at Franklin's Gardens, chalking up a fifth successive bonus-point win - a Premiership record.
Flood scored two of the Tigers' four tries in the win - he also kicked three conversions and three penalties - with the others coming from wingers Alesana Tuilagi and Horacio Agulla.
Northampton's tries came from England pair Lee Dickson and Chris Ashton, with Ryan Lamb kicking three penalties and Stephen Myler a conversion.
Newcastle recorded a stunning 29-20 victory at Kingsholm to give themselves renewed hope of avoiding relegation.
The Falcons' first league away win for almost 14 months was secured through tries by flanker Ally Hogg and replacement back-row forward Mark Wilson, while captain Jimmy Gopperth kicked 19 points.
England captain Chris Robshaw was among the try-scorers as Harlequins rubber-stamped their semi-final berth while plunging Wasps deeper into the relegation dogfight with a 33-17 success.
Robshaw was joined on the scoresheet by Ugo Monye, George Robson and Jordan Turner-Hall as Quins - for whom Rory Clegg kicked 13 points - secured a bonus-point victory.
Exeter produced an astonishing finish to record a remarkable 31-26 win over Worcester in a thrilling game at Sixways. With less than two minutes of the game remaining they trailed 26-19 before tries from Phil Dollman and Sireli Naqelevuki and a conversion from Gareth Steenson broke the Warriors' hearts.
Delon Armitage marked his return to the London Irish starting line-up with two tries but they were not enough to save the Exiles from their seventh successive league defeat, going down 28-19 to Saracens.