Saracens produced a second-half fightback to beat rivals Leicester 32-27 in snowy conditions at Welford Road.
Trailing 17-6 at half time, Saracens scored four tries in a one-sided second-half to stay in second place in the Aviva Premiership.
It was their fourth successive win at Leicester, who have suffered two successive defeats having lost at champions Harlequins last week.
Saracens' tries came from wingers David Strettle (two), James Short and full-back Chris Wyles, with fly half Charlie Hodgson kicking 12 points.
Julian Salvi and Dan Bowden scored for Leicester, who were also awarded a penalty try right on full-time when Strettle deliberately knocked on and was sin-binned.
The sides, second and third in the table, drew 9-9 at Wembley in round three but Saracens made a fine start as former England fly-half Charlie Hodgson gave them the lead with a fourth-minute penalty.
Leicester stand-off George Ford had left his kicking boots at home and missed relatively easy penalties in the seventh and 17th minutes before finally equalising with one from in front of the posts.
Saracens found themselves 10-3 down in the 29th minute after great work by number eight Jordan Crane in winning a loose ball on half way and Ford, whose kick to the corner earned Leicester a lineout.
It led to the first try of the match, for flanker Salvi after giant prop Logovi'i Mulipola's charge to the line and Ford added the conversion.
That became 17-3 three minutes later when centre Bowden scored from Ford's brilliant chip after a searing counter-attack by the lively Murphy and winger Adam Thompstone.
Ford kicked the conversion before Hodgson pulled three points back for Saracens with a 36th-minute penalty.
Both sides kicked too much at the start of the second half as the snow continued to fall and while Saracens upped their game they found Leicester's defence rock solid until Strettle produced a bit of magic from a ruck in the 53rd minute.
The try and Hodgson's conversion put Saracens right back in the game at 17-13 and when Short shrugged off a couple of tackles on the right to score a fine solo try three minutes later Saracens took the lead again, leaving the crowd stunned.
Hodgson missed the conversion but 12 points in 16 minutes had given Saracens the momentum.
They then scored their third try two minutes later when Strettle scampered over for his second try after great work by replacement scrum-half Neil de Kock. Hodgson added the conversion to put them 25-17 ahead.
Ford reduced the arrears to five points with a 72nd-minute penalty but Wyles made the game safe with his side's bonus point try six minutes from time. Hodgson added the conversion.
Leicester were awarded a penalty try at the death after Strettle was yellow carded for a deliberate knock on, with Ford kicking the conversion.
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