With a little over one minute to go before the break, Saracens are pressing hard for the score. But, Mike Brown beats David Strettle to Alex Goode's grubber kick through.

Harlequins restart the game and give the ball away before Nathan Earle rips it back.

The half will finish with a shot at goal for Owen Farrell, though, after Brown is pinged at the breakdown.

Image source, PA

Marcus Smith gives it a thwack and we're level. Game on...

Saracens have enjoyed 72% of the possession so far, but, the determination of the home side means that the difference between the two remains a slender one.

It may well be erased shortly too after Mako Vunipola is pinged at the scrum. Marcus Smith will go for the posts.

Nigel Barden
BBC Radio London commentator

It's been a pulsating game of rugby so far, not many points yet but it doesn't matter, it's been a fantastic tussle.

Harlequins are absolutely up for this and on paper Saracens should be all over it but they have not got a great record here and Quins want to make it difficult as possible.

It's a clean strike and the ball sails through the middle of the uprights, Owen Farrell will take those chances all day long.

Image source, Rex Features

Saracens will have the next chance for points, Mike Brown is pinged for his illegal entry into the ruck, and Owen Farrell calls for the tee.

Luke Pearce looks as if he's going to go the TMO to see if Billy Vunipola has scored. However, the forward turns to the referee and honestly says that he knocked the ball on. That's sportsmanship for you.

The big men are keeping it tight and plugging away a metre out.

Mako Vunipola looks to drive for the post and astonishingly he's held up by Marcus Smith and Danny Care.

Saracens will continue to knock on the door.

Saracens have their most promising position in this match as Jamie George prepares himself for a five-metre line-out. The visiting forwards are licking this lips at this field position.

James Law
BBC Sport at Twickenham Stoop

Image source, PA

It’s not been a bad game by any means, but quite often it’s been more interesting watching what happens *after* the ball has been played.

It’s a very feisty match and the fans are loving it.

What they aren’t loving is a number of offside calls apparently missed by referee Luke Pearce and his team.

Saracens are made to work through nine phases just try and reach the 22. They don't made it with ball in hand so Alex Goode decides that it's time to put boot to ball.

Danny Care collects Goode's grubber kick, Mike Brown carries on the move with his own darting feet and eventually Care clears their lines.

Mike Brown tries to play the ball off the floor and he's penalised for that.

Saracens take the penalty quickly but it comes to nothing and they're given a chance to get out of jail with Brown kicking the ball out on the full.

Scrum to Saracens on the 10m line... will then make it into the red zone and make this position count?

Hugh Godwin
BBC Radio London co-commentator

It's a tasty encounter, Saracens are under pressure from Harlequins though there is a long way to go but we know about Saracens' dire record at this ground and Quins do get into them.

The direction was never in doubt from the England international and we're all-square approaching the end of the first quarter.

Harlequins are penalised at the scrum, they give away a free kick, and as Joe Marler makes his thoughts heard to Luke Pearce the free-kick becomes a penalty.

Owen Farrell calls for the tee.

"We spoke very politely a few minutes ago but the next time that there's aggro and hassle I'll deal with it accordingly."

Referee Luke Pearce is running out of patience right now.

Image source, Gett

Well, well, well Harlequins put that moment instantly behind them as Renaldo Bothma surges through a gap.

He's eating up the metres and has the line in sight but Ben Spencer's cover-tackle is excellent and Bothma doesn't look for the offload early enough.

That was the best try-scoring chance either side have seen and in a derby match like this, have to be finished.

Harlequins give away their field position easily given as they closing the gap at the ensuing line-out.

That's definitely what's know in the trade as a 'coach-killer' penalty. A frustrating moment for the home side.

The match restarts with a scrum the Saracens however they're penalised for pushing too soon by Luke Pearce.

Marcus Smith gets good distance on the kick but it just finds Alex Goode.

The Saracens' full-back returns the favour and then Mike Brown finds touch with his connection.