Wasps hold on to the ball from the scrum this time, and Dan Robson's clearing kick from five metres out is touched in flight, which gives them the line-out.

Sarries infringe from the line-out, offering the visitors a bit more territory and a chance to come up with a response.

It's a crucial period before half-time now.

Image source, Rex Features

Sarries come forward again after Willie Le Roux fails to gather a high kick.

Chris Wyles is almost set away by a looping pass out to the flank but Christian Wade does enough to stop him, and Wasps gets a scrum.

But the waves of attacks from the hosts are fairly relentless at the moment.

Wasps prop Ben Harris has gone off for a head injury assessment, and Matt Mullan replaces him in the front row.

That's one of the easier kicks for Owen Farrell, and he slots that one over simply.

Alex Lozowski and Vincent Koch almost get a third try for Sarries but the Wasps defence holds firm.

However, a penalty advantage was being played so we'll go back for that, and Owen Farrell will look to add another three points.

Saracens are back on the attack, and their forwards are continuing to drive at the Wasps defence.

They are spreading it around in the Wasps half, and making decent ground as they go through the phases.

Image source, Rex Features

No mistake from Owen Farrell, who adds another three points to the tally.

Sarries have been clinical so far this afternoon.

It's a massive scrum from Sarries, who overpower Wasps and win a penalty.

They are just a couple of metres in from the left-hand touchline, and Owen Farrell is lining up another kick at the posts.

Alex Goode gathers a high kick well just inside his own half, before another carry from Billy Vunipola gets Sarries going again.

George Kruis powers forward and considers a kick, but errs on the side of caution.

But Wasps get a scrum for a knock-on by Chris Wyles at the breakdown, and will have the put-in a few metres outside of their own 22.

Jeremy Guscott
Ex-England centre on BBC Radio 5 live sports extra

Wasps have so much talent they can score three tries in three minutes if they want to.

But Sarries have so much more plan in their heads. It's turning into a belter.

Image source, Getty Images

Owen Farrell makes no mistake from the kicking tee, and extends Saracens' lead.

Mark McCall's side have made a great start to this game, though Wasps will be ruing that missed chance.

Saracens get a penalty for offside midway inside the Wasps half just to the right of the posts.

Dan Robson and Danny Cipriani were the culprits there.

Image source, Getty Images

Wasps so nearly back in it!

A great move from the backs takes Wasps over halfway as they work the ball to the left flank.

A brilliant grubber kick from Elliot Daly drops into the corner and Jimmy Gopperth dives in to touch the ball down.

But the centre had his hand in touch before dabbing down, and it'll be a 22 dropout instead.

Wasps hold on to their scrum, and a box kick from Dan Robson clears the ball to just outside of the visitors' 22.

This time the Wasps defence comes out on top from the line-out.

They tie the ball up in a maul and get the put-in at the resulting scrum.

Sarries have been on top in the opening 10 minutes, with more than 70% possession.

Jeremy Guscott
Ex-England centre on BBC Radio 5 live sports extra

Wasps have got to strike back with a penalty or a try because the intensity that Saracens showed through their first attack was back to their very best.

It's a bit of a worrying sign for Wasps.

Image source, Getty Images

The line-out was good and Billy Vunipola got close to the line.

The support was a bit slow in coming and the officials decide the ball was knocked on Maro Itoje.

Sarries get a penalty advantage and go back to the corner.

Have Sarries got their second try of the day?

JP Doyle is not sure and goes to the television match official.