Katie Boulter stunned last year's Wimbledon runner-up Karolina Pliskova at the Eastbourne International as the Briton secured the first top-10 scalp of her career.

Despite making a strong start, fourth seed Pliskova faltered and lost 1-6 6-4 6-4 to the world number 127 in the pair's last-32 match.

Boulter said: "I'm super-proud of myself today. I went out there and didn't feel great on court, and I worked so hard to battle and fight, and against a player like that it means so much to me, coming through that."

There was another major shock win for a British player later in the day as Jodie Burrage knocked out top seed Paula Badosa, the world number 169 triumphing 6-4 6-3 against a player who will be seeded fourth at Wimbledon.

Defending champion Jelena Ostapenko beat Ajla Tomljanovic 6-4 6-4 and two-time Wimbledon winner Petra Kvitova saw off Donna Vekic 6-1 7-6 (7-1), while Beatriz Haddad Maia's strong form on grass continued with a 6-4 3-6 6-3 victory over Estonian veteran Kaia Kanepi.

Brazilian left-hander Haddad Maia is coming off the back of title wins in Nottingham and Birmingham and stretched her winning run on grass to 11 matches.

There were also wins in Eastbourne for Camila Giorgi, Madison Keys and Barbora Krejcikova, but Greek third seed Maria Sakkari bowed out, losing 3-6 7-5 6-4 to Ukrainian Anhelina Kalinina.

At the Bad Homburg Open in Germany, the 2019 Wimbledon champion Simona Halep scrambled for a 4-6 6-3 6-4 win against Katerina Siniakova, and sixth seed Amanda Anisimova came from a set down to see off Alison van Uytvanck in a third-set tie-break.

Bianca Andreescu saw off Martina Trevisan 6-3 6-1 and Angelique Kerber also won in straight sets, while top seed and recent French Open semi-finalist Daria Kasatkina reached the quarter-finals with a 6-1 3-6 6-1 win over Germany's Jule Niemeier.

Kasatkina will be absent from Wimbledon due to the ban on Russian players.

Serena Williams made a thrilling return to the WTA Tour as she and Ons Jabeur teamed up to win a nail-biting doubles contest at the Eastbourne International.

Czech player Marie Bouzkova and Spaniard Sara Sorribes Tormo provided stiff competition but eventually succumbed 2-6 6-3 13-11 as Williams grew in belief.

This was the first competitive match for 40-year-old Williams since abandoning her Wimbledon first-round clash against Aliaksandra Sasnovich last June, due to an ankle injury.

It was also her first doubles main-draw match on grass since she and sister Venus won the 2016 Wimbledon title, so she was understandably rusty in the early stages, while world number three Jabeur's nervousness about playing with Williams, which she spoke of after the match, was also evident.

Williams will be on a wildcard at Wimbledon next week, due to her ranking plummeting, as she chases what would be a record-equalling 24th grand slam singles title.

Her game looked sketchy early on, with a smash into the net handing over the second game, before she then blazed a volley over the baseline to concede the early break.

Her own serve was broken as Sorribes Tormo and Bouzkova snatched a 4-1 double-break lead in the opener, which they soon wrapped up.

Williams lost her footing on the grass midway through the second set, slipping over, but she was soon back up, with the contest becoming increasingly competitive.

Jabeur and Williams forged a 4-3 lead in the second set and then broke to force the match tie-break.

All-out assault from Williams brought up a first match point, but the American then rattled a backhand long after Jabeur failed to put away a volley at the net early in the rally.

Another match point slipped away as Jabeur netted from another great chance, but a drop shot from the Tunisian brought up a third, and this time Sorribes Tormo volleyed wide to herald a scream of delight from Williams.

"Oh my god, it was so fun to play with Ons," said Williams. "Our opponents played amazing. They played so well in that first set, they were jamming.

"We were just trying to stay in there after the first set, it was good though.

"I caught some fire behind me, so that's good; I needed that."

Garbine Muguruza recorded a much-needed win to reach the last 16 at the Eastbourne International.

World number 10 Muguruza, who had only won two tour-level matches since the start of March, was tested in a gripping second-set tie-break by Magdalena Frech, eventually triumphing 6-1 7-6 (9-7).

After the victory, Muguruza said she was pleased to have overcome challenging weather conditions to reach the next stage, saying: "I feel like I fought hard against the wind, and I haven't played many matches on grass either.

"I could see today that if I didn't fight as hard as I can, I wasn't going to win."

A minor upset saw 17th seed Alison Riske slip to a 6-7 (3-7) 6-3 7-6 (7-4) loss to Magda Linette, while Yulia Putintseva surged to a 7-5 6-1 win over Sara Sorribes Tormo and seventh seed Barbora Krejcikova saw her contest with Marta Kostyuk halted by darkness at one set apiece.

Ajla Tomljanovic beat Aleksandra Krunic 6-0 4-6 6-3 and Heather Watson went down 7-6 (7-1) 6-4 to Canada's Rebecca Marino, as the Sussex crowds prepared for Serena Williams' eagerly anticipated doubles outing alongside Ons Jabeur on Tuesday.

There was frustration for Muguruza's fellow former Wimbledon champion Angelique Kerber at the Bad Homburg Open.

Kerber's match against Anastasia Gasanova got under way, but play was stopped due to fading light and a damp court after a rain-hit day. Third seed Kerber led 4-2 in the first set of a contest that will conclude on Tuesday.

The only other seed in action in Germany made routine progress, as France's Alize Cornet raced to a 6-2 6-4 win over Anna Kalinskaya.

Serena Williams will find it "super difficult" to challenge for an eighth Wimbledon singles title when she returns to SW19 next week, according to Karolina Pliskova.

Williams announced her participation at Wimbledon after receiving a wildcard last week, having been absent since a first-round retirement against Aliaksandra Sasnovich at The All England Club last year.

The American great will team up with Ons Jabeur to play doubles at Eastbourne over the coming days as the 40-year-old prepares for her Wimbledon return.

But Pliskova, who lost last year's Wimbledon final to Ashleigh Barty, says Williams could struggle to match her previous exploits after coming back from a long-term leg injury.

"I don't know how long it has been since she has played. Has it been a year? It is a long time, and she is not the youngest any more, so I suppose the body also takes some time to get back into shape," Pliskova said ahead of her own campaign at Eastbourne.

"Playing matches at tournaments is still very different to just practising and from what I understand, she is not playing [singles] here, she is just playing doubles.

"I think it will be difficult, super difficult for her, no matter what kind of player she is because this is a thing where you still need some time.

"But of course, she is an amazing player, she achieved so much and still a number of players will be super scared to play her. This is her advantage but let's see the level. I cannot really say."

Pliskova has won two of her three grand slam meetings with Williams, eliminating her at the quarter-final stage at the 2019 Australian Open and in the final four at the 2016 US Open.

While the world number seven may have cast doubt upon Williams' chances, Paula Badosa is not keen on the prospect of facing the 23-time major champion on the grass.

"I think it surprised everyone but it's very good to have her back. It really amazes me how she has all this hunger for the game," the world number four said.

"It is a great inspiration. It is nice to have her back and I hope she can be back for much more time because I think she does very good for tennis.

"But the other side, of course I don't want to play against her! I hope the draw goes for another player because no one wants to play against Serena and [even] less on grass. Let's pray for that!"

Ons Jabeur has announced she will not take part in the singles tournament at the Eastbourne International.

Jabeur will continue to play in the doubles, where she will pair with American legend Serena Williams, who has not played a competitive match since a first-round defeat at Wimbledon last year.

The news of the Tunisian's withdrawal from the singles tournament comes on the same day that she was elevated to world number three, after her victory at the Berlin Open on Sunday.

She beat Belinda Bencic in the final after her Swiss opponent retired with an ankle injury.

"I feel like I need to be smart about this decision," Jabeur told reporters about her choice not to play singles at Eastbourne.

Jabeur and Williams will face off against the unseeded duo Marie Bouzkova and Sara Sorribes Tormo in the first round on Tuesday.

Ons Jabeur hailed Serena Williams as a "legend" as she expressed her nervousness and excitement to pair with the American great at the Eastbourne International.

Williams has not played a competitive match since defeat to Aliaksandra Sasnovich in the first round of last year's Wimbledon and is now ranked at 1,204 in the world.

The 40-year-old, who is one grand slam title shy of matching Margaret Court's long-standing record of 24, will feature at the third grand slam of the year, which starts next Monday.

Eastbourne will serve as preparation for the upcoming grass-court major after Williams received a wild card in the doubles draw alongside Jabeur.

Jabeur has been in fine form in 2022, winning the Berlin Open and Madrid Open and rising to world number three, though she remains nervous to play with Williams at Eastbourne.

"I wanted to tell everyone, but obviously I couldn't," Jabeur told the WTA Tour in an interview. "I told my family, but even my close friends, I didn't tell anyone.

"Excited, really lucky that she picked me. I'm pretty glad that I can share the court with her. I always watched Serena playing and always supported her.

"She's such a legend and such an example for our sport. I'm really nervous to play. I hope the match will be great and we'll have great matches.

"I don't know why she picked me to be honest. Maybe she watched Madrid. I met her a few times outside the court and she was always nice.

"I remember exchanging pins with her in Rio. I respect her so much. I've been waiting for this moment for a long time. I had to take my time in Berlin, but now it's Eastbourne. I cannot wait for this moment."

Williams and Jabeur have been drawn against unseeded duo Marie Bouzkova and Sara Sorribes Tormo in the first round on Tuesday.

Serena Williams has been handed a Wimbledon singles wild card after confirming her return from injury after a year out.

The 40-year-old has not played competitively since losing to Aliaksandra Sasnovich in the first round of last year's tournament at SW19 and is now ranked at 1,208 in the world.

Williams hinted at her imminent comeback in a social media post on Tuesday, however, and it has now been confirmed she will take part in the third grand slam of the year.

Twenty-three time major winner Williams will also compete in the upcoming grass-court event at Eastbourne after receiving a wild card in the doubles draw alongside Ons Jabeur.

That will act as preparation for Wimbledon, a competition she has won seven times, the most recent of those triumphs coming in 2016.

Williams is one major title shy of matching Margaret Court's long-standing record of 24, which has been the case since her most recent triumph at the 2017 Australian Open.

She missed last year's US Open on home soil, as well as this year's Australian Open and French Open.

In her earlier Instagram message, Williams posted an image of her trainers on grass and captioned it: "SW and SW19. It's a date. 2022, see you there."

American Williams joins 10 British players on the initial batch of wild cards for the Wimbledon singles, while three-time grand slam winner Stan Wawrinka will also take part.

Serena's sister Venus, a five-time singles winner at Wimbledon, was not named on the initial batch of wild cards but two spots remain up for grabs.

The tournament in London gets under way on June 27.

Angelique Kerber won two games on Friday to progress to the final of the inaugural Bad Homburg Open, with unseeded Katerina Siniakova her opponent.

Kerber made home advantage count, following up a 2-6 6-3 6-3 quarter-final win over Amanda Anisimova – a match that was pushed back from Thursday when rain washed out play – with a triumph over top seed Petra Kvitova.

The former world number one came back from behind to win 3-6 6-4 7-6 (7-3) and take a spot in her first WTA singles final since 2019.

Kerber and Kvitova have now met 15 times, with the German winning on nine occasions.

She will go up against an unexpected finalist in the form of Siniakova, who defeated Sara Sorribes Tormo.

The Czech is the world number two in doubles, winning three grand slam titles in that format, and will be looking to replicate the feat of her regular partner Barbora Krejcikova, who triumphed at the French Open this year.

At the Viking International in Eastbourne, Jelena Ostapenko made light work of Elena Rybakina, while Anett Kontaveit made it into the final due to Camila Giorgi's retirement.

Latvian wildcard Ostapenko finished her 6-4 6-1 victory with zero double faults – the first time she has managed such a performance since winning in Luxembourg two years ago.

"I'm really happy with the way I played this week, and every match I played better and better," Ostapenko told a news conference after clinching a spot in her ninth career final.

"It's been a while [since making a] final, so I'm really happy to be in a final and looking forward to tomorrow's match."

The 2017 French Open champion will face Estonia's Kontaveit, who has won their previous two meetings and was 5-4 up in the opening set against Giorgi when her opponent retired hurt.

"It's actually nice to have a Baltic final, because [we're] not such big countries, but we still have good players," Ostapenko added.

"Anett, I know since juniors. We have been playing a lot, maybe not so many matches but we practice sometimes together, in juniors, and played even doubles. So I know her quite well."

Coco Gauff lost the first set in 20 minutes but roared back to stun seventh seed Elise Mertens – as Iga Swiatek also staged a comeback at the Viking International in Eastbourne.

Playing late in the day, Gauff was picked apart by Mertens to begin with, and also trailed by a break in the second set, but the 17-year-old American rising star pulled off a 0-6 7-6 (7-4) 7-5 first-round win.

Seeds Elina Svitolina, Bianca Andreescu and Swiatek all came through three-set matches on a busy day, but Karolina Pliskova was not so fortunate in her opener.

Winner of the grass-court event in 2017 and 2019, Pliskova arrived as the defending champion after last year's edition was cancelled amid the coronavirus pandemic.

However, her hopes of a repeat triumph came to an early end, beaten in three sets by qualifier Camila Giorgi.

The fifth seed was in charge initially against an opponent she had prevailed against in five of their six previous meetings, yet Giorgi produced an impressive response having fallen behind – aided by a strong service performance – to win 2-6 6-2 6-2.

Svitolina, the second seed, had lost in her previous two appearances in the main draw, and it appeared history could be repeated when Paula Badosa claimed the opening set against her.

Yet the second seed recovered to level, then dominated the tie-break in the decider to triumph 4-6 6-1 7-6 (7-1) and set up a second-round meeting with Elena Rybakina, who edged out wildcard Harriet Dart in three sets.

Andreescu, meanwhile, recorded her maiden win on grass in the main draw of a WTA tournament. The Canadian was made to work for it by Christina McHale, eventually coming out on top by a 6-4 2-6 6-2 scoreline.

Swiatek eventually saw off the challenge of Heather Watson after two hours and 42 minutes on court, a 6-3 6-7 (4-7) 7-5 triumph making sure of a place in the last 16. Watson led 4-1 and 40-0 in the decider but could not finish off last year's French Open champion.

This year's Roland Garros runner-up, Anastasia Pavlyuchenkova, meanwhile, was beaten 6-1 6-3 by Jelena Ostapenko.

At the Bad Homburg Open, second seed Victoria Azarenka defeated fellow Belarusian Yuliya Hatouka 7-5 6-0 to reach the last 16.

Jessica Pegula bowed out, though, as the American – seeded third – went down in a three-set tussle against Katerina Siniakova.

Petra Kvitova came from a set down to beat Katarzyna Piter on her return from injury at the Bad Homburg Open, while no play was possible in Eastbourne on Monday due to rain.

Kvitova withdrew from the French Open after suffering a freak ankle injury during her post-match media duties at Roland Garros.

The two-time Wimbledon champion recovered to get her grass-court season under way in Germany and battled to a 4-6 6-1 6-4 over Polish outsider Piter.

A week before the third grand slam of the year gets started at the All England Club, top seed Kvitova trailed 2-0 in the final set as she struggled with her serve, but broke three times to book a second-round meeting with Ann Li.

Sloane Stephens withdrew ahead of her scheduled match with Laura Siegemund due to a foot injury. Riya Bhatia stepped in with Stephens absent, but Siegemund consigned her to a 2-6 7-6 (7-1) 6-1 defeat.

Angelique Kerber needed only 50 minutes to see the back of Ekaterina Yashina 6-1 6-1 on home soil, grasping all five break-point opportunities.

Kerber will do battle with Anna Blinkova in round two and Jessie Pegula's next assignment is an encounter with Katerina Siniakova following a 6-1 6-2 defeat of Amandine Hesse.

Blinkova beat Clara Tauson 7-6 (7-4) 4-6 6-2, while Sara Sorribes Tormo saw off Martina Trevisan 6-4 3-6 6-2

Miserable weather in Eastbourne prevented Karolina Pliskova, Madison Keys, Bianca Andreescu and Madison Keys from playing at the Viking International.