Leicester's passing hasn't been too hot so far this afternoon.

They're desperately trying to find a way to counter Saracens' defensive blitz, but another pass goes sailing into touch and they hand the possession straight back to the home side.

A quick lineout and Saracens are on the front foot once again...

Owen Farrell with a very easy kick to put Saracens into double figures.

Easy maths, that's 15 in a row now for Farrell.

Saracens are just inches from the Leicester line.

Chris Wyles with another great run and the Saracens forwards are trying to bundle the ball over.

Penalty advantage being played and we'll come back for the offside. Graham Kitchener the man who infringed there.

Image source, Rex Features

Meanwhile, Worcester have drawn level at Harlequins, where it is now 7-7 thanks to Jackson Willison's converted try. They've played 16 minutes so far at Twickenham Stoop.

Leicester are playing with real urgency here, trying to find a way through the Saracens defence.

Ben Youngs is desperately trying to pull the strings, but their final pass is sloppy once again.

They need to have more patience, as Saracens win the penalty from the scrum.

For a second there, Ben Spencer looked like he was away.

But Wayne Barnes brings them back as Nick Tomkins is penalised and Leicester escape.

There were a few away fans with their hearts in their mouths...

Leicester, who've had more of the ball in this opening period, get their first points on the board through Owen Williams.

An easy penalty from in front of the post and they reduce the deficit immediately.

George Chuter
Former Saracens, Leicester and England hooker on BBC Radio Leicester

A moment ago, Leicester had a golden opportunity to score a try - they didn't take it.

Barely seconds later, it's clinical from the defending champions.

But Leicester's defence is aggressive and they win the ball back.

A good kick from Owen Williams takes Tigers' out of their half and they win a turnover at the line-out.

Peter Betham gets a great opportunity but Leicester's handling is poor and the ball dribbles forward.

They needed to take advantage there.

Image source, Getty Images

Over at Twickenham Stoop, Harlequins have an early, converted try and they lead Worcester 7-0 thanks to Danny Care's opening score.

Leicester are in trouble already. 

Nothing flash by Saracens but a lovely little kick through and in the next play, Ben Youngs knocks the ball on.

We get ready for another early scrum and Saracens will want to show their strength here.

Chris Jones
BBC Radio 5 live rugby reporter

"The England boss Eddie Jones has yet to look ruffled in his time in charge, but surely even he will be watching the games this weekend with an air of trepidation as the injury list grows, with Northampton's Courtney Lawes the latest doubt.

"The likes of Alex Goode, Owen Farrell, Jamie George, the Vunipolas, Dan Cole, Ben Youngs and Ellis Genge are all in action at Allianz Park today before flying with the rest of the England squad to a training camp in Portugal tomorrow evening, as England start their preparations in earnest for that clash with South Africa in exactly a fortnight."

We have our first scrum of the afternoon, after approximately 30 seconds.

And it's shortly followed by our first reset...

Can Leicester grab a rare victory on Saracens soil? 

They've not won since their trip to Vicarage Road in February 2012 and they've conceded 24 tries away from home this season in the Premiership.

The teams are out...

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Harlequins winger Tim Visser has recovered from a minor injury in time for the visit of Worcester, but the hosts are missing 11 senior players.

Meanwhile, Warriors - who themselves are without 15 players through injury - make two changes as Chris Pennell returns on the wing and Ben Te'o starts at inside centre.

Harlequins: Brown; Yarde, Marchant, Stanley, Visser; Evans, Care (capt); Marler, Buchanan, Collier, Matthews, Horwill, Robshaw, Wallace, J Chisholm.

Worcester: Shillcock; Pennell, Willison, Te'o, Hammond; Lamb, Arr; Rapava Ruskin, Bregvadze, Schonert, O'Callaghan, Barry, Faosiliva, Kirwan, Dowson (capt).

Image source, Rex Features

Premiership leaders Saracens have opted to start with Ben Spencer at scrum-half ahead of Richard Wigglesworth.

Maro Itoje (hand) and George Kruis (ankle) are both sidelined while winger Chris Ashton is suspended until 19 December.

Saracens: Goode; Maitland, Tompkins, Barritt (capt), Wyles; Farrell, Spencer; M Vunipola, George, Figallo, Rhodes, Hamilton, Wray, Burger, B Vunipola.

Mathew Tait starts at full-back for Leicester in place of the injured Telusa Veainu.

Jack Roberts lines up at centre alongside Peter Betham after Matt Toomua underwent a knee operation and lock Graham Kitchener replaces Dom Barrow.

Leicester: Tait; Thompstone, Betham, Roberts, Pietersen; O Williams, B Youngs; Ayerza, T Youngs (capt), Cole, Slater, Fitzgerald, O'Connor, McCaffrey.