Tracy Austin
Two-time Grand Slam champion on BBC TV

I'm liking Caty McNally's idea on Iga Swiatek's service games.

She is standing far inside the baseline, trying to attack the second serve and rush her opponent, but the problem is her positioning.

You can see her intent. She wants to hit the return early and deep to the forehand of Swiatek, but that can make you quite vulnerable unless it is a really effective return.

Iga Swiatek doesn't look like she's even in third gear just yet but gets another reasonably comfortable hold.

Elena Rybakina, speaking after her win over Maria Sakkari, says she's "really happy" with her performance and agrees with interviewer Lee McKenzie that playing on the show courts at Wimbledon bring out the best in her.

She adds that it is "quite unexpected" to see so many seeds go out early in the women's draw.

Jess Anderson
BBC Sport at Wimbledon

From Centre Court to court two.

Defending champion Barbora Krejcikova continues her title defence on the smaller more intimate court.

When I saw that she was aa break down in the opening set I hotfooted it down to the bottom end of the grounds but by the time I had got here Krejcikova had already recovered to take the opening set.

Impressive.

Image source, Getty Images

Alongside plenty of action in the singles, there are also doubles matches galore at Wimbledon this afternoon with first rounds underway.

In the ladies' doubles, British duo Ella McDonald and Mimi Xu have progressed to the second round with a 6-4 7-6 (7-1) 6-3 win over Linda Noskova and Rebecca Sramkova. It took the pair one hour and 54 minutes to wrap things up on court 10.

They will face 16th seeded American duo Caroline Dolehide and Sofia Kenin in the second round on Friday.

Elsewhere, Italian duo Sara Errani and Jasmine Paolini have cruised through in straight sets against Spain's Cristina Bucsa and Japan's Miyu Kato. The third seeds only needed one hour and seven minutes to claim their 6-3 6-3 victory.

A tough start for Caty McNally. Can she find a foothold in this opening set?

The 23-year-old gets going with a lovely serve and volley.

McNally continues to build momentum through the game and gets her first hold.

The run of points won by Elena Rybakina ends at 16, and a couple of break points go begging too for the former champion.

But Rybakina gets a huge slice of good fortune with a favourable net cord at deuce and Maria Sakkari has no answer to Rybakina's attack - a double break and Rybakina is serving for a place in round three.

It is a good start for defending champions Barbora Krejcikova over on court number two.

The seventeenth seed has taken the first set in just over half an hour against American Carolina Dolehide with just the one break separating them.

With so many seeds struggling at Wimbledon this year, she will be hoping for a stress-free passage to the third round today.

For all the success Iga Swiatek has enjoyed during her career - five Grand Slam titles and Olympic bronze medallist - she has struggled to impose herself on grass.

Swiatek reached her first grass WTA Tour final at the Bad Homburg Open in June to suggest her fortunes might be improving.

The Pole gets another rapid hold to 15 to pull further clear on the scoreboard.

Image source, PA Media

This one might not last too much longer.

Losing her serve in the opening game of the second set seems to have sparked Elena Rybakina, who breaks to love to take control of the second set.

In fact, she's won 14 points in a row to move into a 4-1 lead.

Image source, Reuters

Iga Swiatek makes it look so easy from the baseline.

The eighth seed takes the early break with a sweeping forehand.

It's not the best start from the American.

Iga Swiatek has two breaks points.

Caty McNally has a pretty good knowledge of Iga Swiatek's game - the pair played together and won the French Open doubles title as juniors in 2018.

Can she put that knowledge to good use here?

Iga Swiatek is out of the gate quickly.

The former world number one guides a forehand winner into the corner to get the first hold.

An immediate reply from Elena Rybakina, who breaks back at the first attempt to square up set two.

Right, time for another match on Centre Court.

Iga Swiatek won the coin toss and has elected to serve first.

Off we go...

Gary Rose
BBC Sport at Wimbledon

Fresh from ending Jack Pinnington Jones’ Wimbledon hopes, Flavio Cobolli is back on the court looking to knockout more Brits as he partners Alexander Bublik against Billy Harris and Marcus Willis.

There’s lots of doubles matches on these outside courts today and the walkways between them get packed with people trying to catch a glimpse of the action.

Image source, EPA

Magnificent defence from Maria Sakkari and she breaks in the opening game of the second set!

On break point, Sakkari returns deep and retrieves another powerful groundstroke to the forehand corner, after which Elena Rybakina finds the net.

As is traditional at Wimbledon, the defending women's champion was given the honour of opening play on Centre Court on Tuesday.

However, Barbora Krejcikova was made to work hard for her spot in round two by rising star Alexandra Eala, who won the first set before the Czech 17th seed recovered to win in three.

Her opponent Caroline Dolehide is just outside the top 50 in the world and is through to the second round for the first time in her career, after three consecutive first-round exits.

It's on serve at 3-3 in the first set on court two.