A tricky start to set two for Katie Boulter, but the British number one comes through this latest test after a second deuce with a timely ace. The perfect medicine.

A great start to day two at Queen's for the Brits with that victory for Heather Watson!

Meanwhile, Sonay Kartal and Jodie Burrage have just broken serve in their opening game against Erin Routliffe and Lyudmyla Kichenok.

And, on Andy Murray Arena, we continue to focus on Katie Boulter, who is a set to the good against former world number 32 Ajla Tomljanovic.

After losing out at the end of a tight first set, Tomljanovic holds serve to get up and running in the second.

We have our first British winner of the day! A brilliant straight-set victory for Heather Watson against Yulia Putintseva puts her into the second round.

And she will face another Kazakh in Elena Rybakina, the fourth seed and 2022 Wimbledon champion who had a first-round bye.

She's just beaten someone ranked 137 places above her, which might make the prospect of Rybakina's 153-place advantage a little less daunting.

Image source, Getty Images

Jess Anderson
BBC Sport at Queen's

A big roar from Katie Boulter as she seals the first set. That will have taken longer than she would've liked with the set in her sights at 5-4 but nevertheless she's got the lead here now.

A big sigh of relief for the Briton.

Katie Boulter slams in a forehand and then unleashes a huge roar!

She takes the opening set on Andy Murray Arena after an intense first 62 minutes against Ajla Tomljanovic.

A miss by Ajla Tomljanovic!

Set points for Katie Boulter.

Katie Boulter resumes serving duties trailing 4-3 with the tie-break still on serve.

Two key points for the Briton to navigate safely here... And that is a job very well done! Two excellent first serves leave her just a couple of points from the set.

Did Katie Boulter mean that?! Maybe it catches her racquet frame, but let's give her the benefit of the doubt. The British number one somehow digs out a drop shot and the ball completely dies on the spot where it lands.

Nothing to split these two still as we edge towards the business end of the tie-break.

Jess Anderson
BBC Sport at Queen's

Already it feels like quite a while ago that Katie Boulter was serving for the set and Ajla Tomljanovic instead broke back.

Now into a tie-break, Boulter will have to put that missed opportunity behind her as the clock nears the hour mark.

It's hotting up on the Andy Murray Arena, literally and metaphorically as the sun starts to creep out from behind the clouds.

A terrific drop shot by Ajla Tomljanovic turns the game in her favour, as Katie Boulter scampers forward and fires up all the fast-twitch muscle fibres she can but is still a fraction of a second short.

That's some escape from Tomljanovic, and it takes us to a tie-break.

Katie Boulter makes her move.

The British number one piles the pressure on Ajla Tomljanovic by winning the first couple of points on the Australian's serve.

There's very little to separate these two right now.

Katie Boulter shouts 'Come on' after winning an important fourth point to move 40-15 up on serve and motivate herself to get over the line but a double fault prevents immediate progress.

That's a loose forehand from Ajla Tomljanovic, though, and Boulter guarantees herself at worst a tie-break in the first set.

Katie Boulter is still within a game of the opening set. Can she strike here, just when Ajla Tomljanovic is beginning to feel as though she's forced her way back in?

No, that's well held by Tomljanovic, who overpowers Boulter at the net to restore parity at five games apiece.

Two break points for Katie Boulter to save as Ajla Tomljanovic fights to extend the first set.

The British number one has an ace up her sleeve, literally, to shut down the first - but Tomljanovic fires back to bring the first set back on serve.

Frustration for Boulter. On we go.

An excellent forehand down the line from Ajla Tomljanovic forces Katie Boulter into an error to bring the Australian level at 15-15, and the Australian edges in front with another smart return.

Big points coming up here for Boulter.

Ajla Tomljanovic goes for broke at 0-30 down on serve but narrowly misses the line to hand over three break points.

And Katie Boulter only needs one! After seeing off break points in a lengthy seventh game, the British number one will serve for the first set. Big momentum swing.

Jess Anderson
BBC Sport at Queen's

That felt like a crucial game for Katie Boulter to come through.

A couple of scares in there but she recovers to take an important hold.

It's still not full on the Andy Murray Arena but there's a healthy crowd in here urging the Brit on.

Katie Boulter, digging deep under sustained pressure, finds a timely first serve to escape a second break point and she picks her spot again to get over the line.

That took a lot of effort - but she edges back in front in the opening set and the crowd make it clear they appreciate her efforts.

Ajla Tomljanovic gets a look at a second serve at 40-30 and crashes a backhand winner into the back of the court to reach deuce. What a shot that is.

Another devastating hit takes the Australian to break point.

Over on court one another Briton is in action and going well.

Heather Watson, in her 17th year on the professional tour, has taken the first set against Kazakhstan's Yulia Putintseva.

On paper, Putintseva - the world number 27 - is the overwhelming favourite against the 164th-ranked Watson.

Image source, Getty Images