Saracens smashed Harlequins 37-18 at Wembley giving their chances of making the play-off semi-finals a big boost.
Sarries were in the lead from the start of the match as former Springbok fly-half Derick Hougaard slotted a penalty in the 12th minute.
Rory Clegg leveled matters with a penalty of his own but Sarries flanker Andy Saull scored two quick-fire tries to put his side in charge of the match at 15-3.
Quins reduced the gap with their opening try being provided by Chris Brooker in the 26th minute as the sides went into the dressing rooms at 18-8 to the men in black.
The second half was all Sarries as they ran in three unanswered tries. Schalk Brits kicked off the free-flowing play by the hosts with a try 10 minutes into the half as Sarries went 17 points clear.
The one-way traffic continued as Michael Tagicakibau put his name on the score-board before Ernst Joubert made it five tries to one in the 69th minute to take the score well beyond Quins' reach.
Final Score Saracens (18) 37 Harlequins (8) 18
Scorers
Saracens
Tries: Saull 2, Brits, Tagicakibau, Joubert
Cons: Hougaard, Jackson 2
Pens: Hougaard 2
Harlequins
Tries: Brooker, Monye, York
Pen: Clegg
Teams
Saracens: A Goode; M Tagicakibau, A Powell, A Barritt R Penney; D Hougaard, J Marshall, M Aguero, S Brits, P du Plessis, H Vyvyan, T Ryder, J Melck, A Saull, E Joubert (c).
Replacements: F Ongaro, K Lealamanua, R Skuse, M Botha, J Burger, N de Kock, G Jackson, K Ratuvou.
Harlequins: M Brown; D Strettle, G Lowe, J Turner-Hall, T Williams; N Evans, D Care; C Jones, C Brooker, J Andress, J Percival, G Robson, T Guest, W Skinner (c), N Easter.
Replacements: M Cairns, A Croall, J Johnston, L Stevenson, C York, K Dickson, R Clegg, U Monye.
