Tries from Chris Wyles, Sean Maitland and Billy Vunipola helped Saracens cement their place at the top of the Premiership table with a regulation 24-10 win over Leicester at Allianz Park.
The hosts led 17-3 at the break before Leicester briefly threatened a second-half comeback as replacement centre George Catchpole found the line moments after Saracens had lost Mako Vunipola to a yellow card for an off-the-ball block on Freddie Burns.
Despite piling on the late pressure, however, Richard Cockerill's men were ultimtely unable to salvage a losing bonus-point.
Harlequins, meanwhile, proved far too strong for struggling Worcester, piling on 29 points in the second half as they ran out 36-14 winners at the Twickenham Stoop.
The injury-ravaged visitors were seeking their first away success since winning the corresponding fixture last season and managed to get to the break with the scores locked at 7-7, helped by Harlequins losing England prop Joe Marler to a yellow card for bringing down a maul.
However, James Horwill, Mike Brown, Joe Marchant and Tim Visser all subsequently found the line for the London side who climbed to fifth in the table courtesy of the bonus-point win.