Saracens secured London bragging rights in thumping fashion, thrashing Harlequins 52-7 at Tottenham Hotspur Stadium.
Saracens were as rampant as Quins were rudderless, with tries from Alex Lewington, Theo Dan and two from Sean Maitland giving the hosts an unassailable half-time lead.
Dan crossed again at the start of the second period before a consolation try for Quins' Alex Dombrandt.
Argentina pair Lucio Cinti and Juan Martin Gonzalez got in on the act before an eighth try from Alex Goode sent Saracens into second place ahead of a trip to leaders Northampton next weekend.