Boulter is really building up some rhythm now and an excellent drop shot puts her 30-15 up and eyeing the potential of the double break.

The two battle to deuce but Boulter positions herself well to deal with Schnaider's second serve to move to break point, and then sweeps a forehand return out of her opponent's reach to seal the double break.

Boulter is now serving for the first set.

Jess Anderson
BBC Sport at Queen's

Brilliant work from Boulter to break Shnaider’s serve and she rallied really well to hold too.

Her serving has troubled her somewhat this week but she did really well there to keep her cool.

Boulter's first serve continues to make Shnaider uncomfortable but the Russian is battling here, catching out Boulter with a shot that draws the Brit to the net and she sends a backhand volley wide.

A forehand return into the net at deuce gives Shnaider the chance to break, but that first serve digs Boulter out of trouble and she saves break point before an ace and another strong serve secures the hold.

Fantastic work by Boulter as she breaks Shnaider's serve.

The Russian can't get a point on the board as Boulter responds to everything she can offer and an impressive volley that draws a roar from the crowd helps Boulter on the way to the break.

Both had been pretty comfortable on serve but this one is closer as Shnaider battles to deuce.

However, a couple of good first serves do the damage for Boulter and she holds.

The first proper rally of the match ends with Boulter putting too much on a forehand return and it goes long to make it 15-15. Boulter then sends a shot into the net to give Shnaider hope of a break, but Boulter gets lucky with a shot that clips the top of the net to drop just over and she's a point away from the hold.

Both players are serving well here as Shnaider rattles off the first ace of the match.

A hold to love looks on until she sends a couple of shots long, but she gets the job done.

A confidence-boosting service game for Boulter as she holds to love.

Early days but she's looking strong.

Solid start for Shnaider. She looks set to take the opening game without dropping a point but sends a forehand return into the net at 40-0, before Boulter does well with a backhand slice that lands just over the net. However, Shnaider puts a shot out of reach for Boulter and takes the first game.

Off we go with Shnaider serving first.

Katie Boulter gets an ovation from the crowd inside the Andy Murray Arena before she goes through her warm-ups.

The British number one faced Diana Shnaider in the final of the Hong Kong Open last November but was beaten 6-1 6-2.

Will she gain revenge today?

Jess Anderson
BBC Sport at Queen's

The men are starting to arrive for their tournament which begins on Monday at Queen's.

A healthy group of people gathered round one of the practice courts usually indicates someone well-known having a hit and who was it but British number one himself Jack Draper.

He's down a few days early after going out in the fourth round of the French Open last week.

Image source, BBC Sport

Image source, Getty Images

It is the British number one up first at the Andy Murray Arena as Katie Boulter takes on Russian fifth seed Diana Shnaider.

Boulter overcame Ajla Tomljanovic in three sets on Tuesday to reach the last 16/

Heather Watson came through qualifying and beat Yulia Putintseva to set up today's meeting with 2022 Wimbledon champion Elena Rybakina.

Finally, Emma Raducanu, who claimed a straight-set victory over Spanish qualifier Cristina Bucsa in round one, takes on Rebecca Sramkova, who beat Wimbledon champion Barbora Krejcikova to progress.

Jess Anderson
BBC Sport at Queen's

It's a hot one in west London!

It looks like we could be getting up to 25 or so degrees today but it does already feel very warm walking around the grounds.

Sun hats, sun cream and water the order of the day.

It looks like we may get a bit of rain later on too. Let's hope that doesn't impact a jam packed day of British action on Andy Murray Arena with three last 16 matches featuring Brits.

Hello!

Welcome along to our coverage of day four at Queen's on what is day with a clean sweep of British players in action.

The first three matches feature home favourites. Here's the full line-up:

From 12:00 BST:

Diana Shnaider (5) v Katie Boulter

Heather Watson v Elena Rybakina (4)

Emma Raducanu v Rebecca Sramkova

Qinwen Zheng (1) McCartney Kessler

Image source, Getty Images

The 'BoulterCanu' doubles run may have come to an end at Queen's yesterday but Katie Boulter and Emma Raducanu switch focus back to singles, with both in action today as they look to reach the quarter-finals.

BBC Sport

Brits in Action

The British women’s number 1, Katie Boulter, will be looking to continue her good form on grass having won the Nottingham Open for the previous two years. She will be looking to be the first British women to win the event since Ann Haydon-Jones in 1969 and follow in her footsteps of winning both the Queen’s Club Championship and Wimbledon in the same year.

British men’s number 1, Jack Draper, is looking to continue his fine year with another win before Wimbledon. Draper won at Indian Wells earlier this year beating Holger Rune in straight sets and currently sits 5th in the world rankings, the highest of his career.

Best of the rest

American Madison Keys won her first grand slam this year, winning the Australian Open in January. She’ll be eyeing up her second grand slam at Wimbledon and a win at Queen’s could put her in a good position. Keys has previous success on grass from a 2023 Eastbourne win.

World number two Carlos Alcaraz will be looking to continue his dominance on grass as he sets to defend his Wimbledon title for a second time. The Spaniard has won Queen’s once before in 2023, the year he won his first Wimbledon grand slam.

Image source, Getty Images

Get Inspired
#GetInspired

How do I start?

• There are over 20,000 tennis courts across the United Kingdom. Getting going is pretty easy, whether you're starting out or coming back to the game, there's a level to suit everyone, external.
• Thousands of clubs and park courts, external around the country can provide racquets and balls if you don't have your own.
• Once you're feeling confident, there is a Local Tennis League, external system to get involved with near you. There are more than 150 leagues and over 15,000 players of all levels and abilities across the UK.
• If you've been inspired by Emma LTA Youth, external is a fun entry point for kids aged 4-11, giving parents the chance to in too, with an accredited coach.
• If you need a different introduction to tennis, external, there are some fun routes to try, including Walking Tennis, Padel, Tennis Xpress, and Pair & Play, specifically for women.

What is it?

• The aim of the game is pretty simple; hit a tennis ball over the net, making sure to keep it inside the designated lines.
• If your opponent fails to return the ball back over the net to you, you win the point. You can play with two people (one-on-one), or with four (two-on-two) on different surfaces, including grass, hard court, carpet and clay.

Is it for me?

• The simple pleasures of whacking a ball over a net are not to be underestimated. It's an addictive and fun way to get fit, with many different variations to suit people of all ages and abilities.
• As well as being extremely social, tennis is a non-impact sport which improves bone-density and flexibility of muscles and ts.

What to expect when I start?

• Tennis will give you an all-round workout and help you stay fit, building your leg muscles as you run around the court.
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• The British weather isn't the most reliable, but there are options to play indoors or floodlit courts, external throughout the year.
• Tennis can be adapted for any level of ability, as well as for players with different disabilities. Wheelchair tennis can be played on any regular tennis court, with no modifications to racquets or balls, and there are many different options for those with other disabilities to play.
• The LTA, external caters for and champions wheelchair tennis, and also offers subsidised camps featuring learning-disability, deaf and visually-impaired tennis.
• There is also Mini Tennis, external for children aged 3-10, with smaller courts, nets and racquets and lower-bouncing balls.
• Tennis players need coaches, external, and that's a great way to get involved with the sport.