Northampton broke numerous records as they battered Gloucester 90-0 in the Gallagher Premiership.
The Rugby Football Union has given Billy Vunipola a formal warning following his drunken arrest in Mallorca.
Billy Vunipola says he has a problem "knowing when to stop" as he explained the circumstances behind his drunken arrest in Majorca.
Billy Vunipola will face no further action from Saracens after being fined €240 (£205) following an incident in Mallorca.
Maro Itoje will remain available at a key stage of the Premiership season after the Saracens lock saw his citing for a dangerous tackle dismissed.
Reigning champions Saracens put one foot in the Gallagher Premiership play-offs after Owen Farrell's late penalty sunk title rivals Bath 15-12 at the Recreation Ground.
Maro Itoje and Jamie George have yet to be offered finalised hybrid contracts by England, with Saracens boss Mark McCall hoping for a speedy resolution.
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.