Harmony Tan admitted she feared the prospect of facing a 23-time grand slam winner after defeating Serena Williams at Wimbledon on Tuesday.

It took Tan three hours and 11 minutes to claim the scalp of the seven-time Wimbledon winner, eventually winning the match 7-5 1-6 7-6 (10-7).

The SW19 debutant twice broke back in the third set, even setting up a match point which Williams saved before the eventual tie-break, and rallied from a 4-0 deficit in the tie-break to emerge victorious.

Despite the resolve shown and delight with the win on Centre Court at the All England Club, the 24-year-old revealed she nervously came into the contest.

"[Serena] is a superstar and when I was young I was watching her so many times on the TV," Tan said post-match. "For my first Wimbledon, it's wow. Just wow.

"When I saw the draw, I was really scared. Because, yeah, it's Serena Williams. She's a legend and I was like, 'Oh my God, how can I play?' If I could win one game or two games, it was really good for me.

"I would like to thank everybody today and my team and my coach Nathalie Tauziat, who also played Serena. Thank you so much for being with me."

Tan will now face 32nd seed Sara Sorribes Tormo, who defeated American qualifier Christina McHale 6-2 6-1.

Nick Kyrgios emerged victorious from an opening-round five-setter against British wildcard Paul Jubb at Wimbledon on Tuesday but controversy again followed, with the Australian blasting the "disrespect" he feels he receives.

The 27-year-old defeated Jubb 3-6 6-1 7-5 6-7 (3-7) 7-5 and hit 67 winners but after a drama-filled three hours and five minutes, his prompting of a line judge to speak to the chair umpire and demands for some fans to be removed were punctuated by spitting towards a section of the crowd upon victory.

Earlier this month, tournament organisers in Stuttgart investigated when Kyrgios claimed he was racially abused by sections of the crowd during a match.

At his post-match news conference, Kyrgios jousted with journalists on the capacity of older line judges to make accurate calls, but primarily focused on the perceived normality of on and off-court abuse.

"A lot of disrespect was being thrown today from the crowds," he said. "I’m just starting to think that it’s normal when it’s really not.

"I didn’t say anything to the crowd until they started just every time I came down to the far end, people just going. It’s just I don’t know if it’s normal or not.

"Just pure disrespect, just anything. Someone just yelled out I was s**t in the crowd today. Is that normal? No. I just don’t understand why it’s happening over and over again.

"Have you ever gone to a supermarket and just started berating someone scanning the groceries? No. So why do they do it when I’m at Wimbledon? Why is that?"

In a testy news conference, Kyrgios was himself accused of lacking respect, but he lamented over not being able to respond to the abuse he receives on the court without some kind of punishment.

The world number 40 insisted he has no regrets on spitting towards an unruly fan after his win.

"Today, as soon as I won the match, I turned to him," Kyrgios said. "I’ve been dealing with hate and negativity for a long time, so I don’t feel like I owed that person anything.

"Like, he literally came to the match to literally just, like, not even support anyone really. It was more just to, like, stir up and disrespect. That’s fine. But if I give it back to you, then that’s just how it is.

"There’s a fence there and I physically can’t do anything or say anything because I’ll get in trouble. They’re able to say anything they want."

Alize Cornet claims several players contracted COVID-19 at last month's French Open, but kept the outbreak quiet in order to avoid mass withdrawals from the tournament.

Wimbledon has already been rocked by two high-profile male players withdrawing after testing positive for the virus, with last year's runner-up Matteo Berrettini and 2014 US Open champion Marin Cilic both pulling out ahead of scheduled first-round matches on Tuesday.

Now Cornet, who equalled Ai Sugiyama's all-time record of 62 consecutive grand slam main-draw appearances in a win over Yulia Putintseva on day two, claims there were cases at Roland Garros that did not come to light.

"At Roland Garros, there was a Covid epidemic, no one talked about it. In the locker room, everyone got it and we said nothing," she told L'Equipe.

"When it comes out in the press, with big players, it will start to set fire to the lake everywhere and that worries me a little.

"[2021 French Open winner Barbora] Krejcikova withdrew saying she had Covid, and the whole locker room was sick. 

"At some point, we all might have had the flu. The thing is, we have the symptoms, itchy throat… we play and everything is fine, it's fine. 

"At Roland, I think there have been a few cases and it's a tacit agreement between us. We are not going to self-test to get into trouble! 

"Afterwards, I saw girls wearing masks, maybe because they knew and didn't want to pass it on. You also have to have a civic spirit."

Rafael Nadal was delighted to pass an "important test" against Francisco Cerundolo in his Wimbledon opener and refused to blame his foot injury after dropping the third set against the Argentine.

Nadal was made to work on Centre Court on Tuesday, requiring three hours and 33 minutes to wrap up a 6-4 6-3 3-6 6-4 win over Cerundolo.

The 22-time grand slam champion made 41 unforced errors but regained his composure to move into the second round, winning 11 consecutive points as he fought back from a break down in the fourth set to ensure he will face Ricardas Berankis.

The Spaniard says his lack of action on grass was always going to ensure it would not be plain sailing at SW19.

"I'm going to be talking about my foot today and not anymore, if it's fine for you guys," said the second seed, who is in the hunt for a calendar Grand Slam.

"We cannot be talking about my foot every single day. If not, we forget the most important thing: that is tennis.

"All credit to Fran, he started to play great and he has been a very tough opponent.

"Grass is not a surface we play very often and especially in my case, for different reasons, the last three years I didn't put a foot on the grass.

"It always takes a while – this has been my first match and every day is a test and today has been one of those important tests.

"At the beginning of the tournament, especially under the circumstances that I arrived here, the victory is the most important thing because that gives me the chance to practice tomorrow again and to have another match in two days, and I'm happy for that, without a doubt."

Nadal played his first grass-court match in three years just last week when facing Stan Wawrinka in an exhibition contest, and is participating at the All England Club for the first time since a run to the semi-finals in 2019.

Rafael Nadal was forced to work for a first-round victory over Francisco Cerundolo on Centre Court at Wimbledon.

The world number two overcame a scare to secure a 6-4 6-3 3-6 6-4 win at SW19 despite making 41 unforced errors as he eyes a first calendar Grand Slam.

Second seed Nadal, who won his first grass-court match in three years in an exhibition match against Stan Wawrinka last week, secured a break in the fourth game but Argentine Cerundolo immediately responded, finishing with a strong overhead volley after the Spaniard lost his footing after his service.

Cerundolo was certainly not fazed by his all-conquering opponent, with the pair exchanging thrilling rallies and both displaying an array of brilliant shots in a first set that Nadal won by breaking for a second time.

The 22-time major champion made a scrappy start to the second set, but a solitary break in the sixth game put him one set away from round two.

In the third, Cerundolo continued to battle as he broke Nadal back immediately to peg him back at 2-2 and edged in front at 5-3 before serving out the set to raise hopes he could pull off a huge shock.

The world number 42 continued to excel as he opened up a 3-1 lead in the fourth set, but Nadal roared back and won 11 consecutive points, breaking twice to seal his spot in the second round without being taken the distance.

He will face Ricardas Berankis in the second round at the All England Club.

Data slam: Nadal matches Navratilova record

Nadal's victory saw him equal the great Martina Navratilova's record of 306 grand slam wins in his career.

That puts him joint-fourth on the all-time list, behind only Roger Federer (369), Serena Williams (365) and Novak Djokovic (328)

WINNERS/UNFORCED ERRORS
Nadal – 23/41
Cerundolo – 30/46

ACES/DOUBLE FAULTS
Nadal – 5/3
Cerundolo – 2/2

BREAK POINTS WON
Nadal – 6/14
Cerundolo – 4/18

Feliciano Lopez equalled Roger Federer's record of 81 main-draw appearances at grand slam events in the Open era but he was beaten in the first round at Wimbledon.

The 40-year-old made his grand slam debut at the 2001 French Open and had appeared in every major since the 2002 event in Paris until he failed to progress through qualifying at Roland Garros this year.

Spaniard Lopez went down in straight sets to Botic van de Zandschulp at SW19 on Tuesday.

Ranked 214 in the world, Lopez is a three-time quarter-finalist at the All England Club, while he also reached the quarter-finals of the US Open in 2015.

Since then, the veteran has never progressed further than the third round at a grand slam.

Fabrice Santoro is third on the list behind Federer and Lopez with 70 main-draw appearances at majors, with Mikhail Youzhny and Fernando Verdasco on 69.

Nick Kyrgios hit out at a "rowdy" Wimbledon crowd after coming through a five-set thriller with Brit Paul Jubb in the first round.

The Australian was forced to come from behind to avoid a surprise exit, ultimately prevailing 3-6 6-1 7-5 6-7 (3-7) 7-5 on No.3 Court on Tuesday.

In a typically tempestuous performance, the world number 40 was frustrated by certain members of a partisan home crowd.

Kyrgios also accused a line judge of being a "snitch" as he aimed his grievances at the chair umpire, also calling for vocal spectators to be ejected.

The 27-year-old let his feelings be known after wrapping up his victory in just over three hours and paid tribute to his opponent.

"It was tough, he's a local wildcard, had nothing to lose and he played exceptional tennis at times," he stated. "He's going to be a good player for sure, I'm just happy to get through.

"The crowd was pretty rowdy. A couple of people were not shy in criticising me so that one is for you, you know who you are.

"Playing here is a lot of fun, Wimbledon over the last couple of years has been strange. We had bubbles last year and no ranking points this year, but it's special.

"It would've been a tough loss to take and I'm happy to get through. I just talk a lot on the court but off the court I'm not too bad."

Kyrgios will face either Serbia's Filip Krajinovic or the Czech Republic's Jiri Lehecka in the second round on Thursday.

Iga Swiatek is through to the second round at Wimbledon thanks to a straight-sets defeat of Jana Fett on Tuesday.

While the top seed did not have it all her own way in the second set, she ultimately had more than enough to see off Fett 6-0 6-3.

All early signs pointed to a comfortable win for Swiatek as world number 252 Fett looked nervous, committing 14 unforced errors to her opponent's four in the first set.

As such, Swiatek's first-set bagel arrived with the Pole barely breaking a sweat, but her level dropped in the second and allowed Fett a foothold.

Fett broke to love in the first game of the second set, and although Swiatek instantly hit back, the Croatian then broke again before managing to consolidate and go 3-1 up.

But she passed up five break points as Swiatek began to build her way back, and the world number one was soon a break to the good, with Fett's 23 unforced errors, which included nine double faults, proving her downfall.

A sloppy return from Fett gave Swiatek match point, and the former put her next shot straight into the net as the favourite became the first female player since Martina Hingis in 1997 to win 36 successive matches.

Data slam: Swiatek bagels again

Remarkably, Swiatek's first-set bagel was her 17th of the season. This century, only Serena Williams (25 in 2013) and Kim Clijsters (18 in 2003) have managed more in a single year.

While Fett made life a little trickier in the second, the nature of Swiatek's first-set performance almost made victory a formality and few would bet against her repeating her bagel feat in the second round.

WINNERS/UNFORCED ERRORS
Swiatek – 10/15
Fett – 7/23

ACES/DOUBLE FAULTS
Swiatek – 0/3
Fett – 1/9

BREAK POINTS WON
Swiatek – 6/10
Fett – 2/8

Matteo Berrettini has withdrawn from Wimbledon after testing positive for coronavirus.

The eighth seed was due to face Cristian Garin in the first round on Tuesday but will now take no part after suffering with mild flu-like symptoms in the past few days.

Berrettini was the runner-up at SW19 last year and, after winning at Queen's for the second straight year last week, was considered to be among the favourites to go all the way at the All England Club.

But the Italian revealed his status on social media.

He wrote: "I am heartbroken to announce that I need to withdraw from Wimbledon due to a positive COVID-19 test result. I have had flu symptoms and been isolating the last few days.

"Despite symptoms not being severe, I decided it was important to take another test this morning to protect the health and safety of my fellow competitors and everyone else involved in the tournament.

"I have no words to describe the extreme disappointed I feel. The dream is over for this year, but I will be back stronger. Thank you for the support."

Andy Murray has defended using an underam serve in his four-set Wimbledon victory over James Duckworth and believes the tactic should be seen as smart.

The two-time Wimbledon champion recovered from a set down to win 4-6 6-3 6-2 6-4 against the Australian on Monday.

Murray maintained his record of having never lost in the first round at SW19, throwing in an underarm serve to help him win a point in the third set.

The Scot insisted using the underam serve, a move often associated with Duckworth's compatriot Nick Kyrgios, is a legitimate tactic and not a sign of disrespect to an opponent.

"He changed his return position, that's why I did it," Murray explained after the match. 

"He was struggling a little bit on the first-serve return, so he stepped probably two metres further back. As soon as I saw him step further back, I threw the underarm serve in.

"I personally have no issue with players using it. I never have. Certainly more and more players have started returning from further behind the baseline now to give themselves an advantage to return.

"No one says it's disrespectful for someone to return from five or six metres behind the baseline to try to get an advantage.

"So I used it, not to be disrespectful to him, but to say, 'if you're going to step further back to return the serve to give yourself more time, then I'm going to exploit that'.

"I've never understood that [argument it is disrespectful]. It's a legitimate way of serving.

"I would never use an underarm serve if someone was standing on the baseline because I think it's a stupid idea because they're going to track it down and it's easy to get.

"If they stand four or five metres behind the baseline, then why would you not do that to try to bring them forward if they're not comfortable returning there? Tactically, it's a smart play."

Murray will face big-serving American John Isner in the second round on Wednesday, having won each of the duo's eight previous head-to-head meetings.

He was happy with how he felt physically after beating Duckworth, having returned from the abdominal injury he suffered while reaching the Stuttgart Open final earlier this month.

"The last few days when I've been serving was fine," he said. "I went to get an ultrasound scan on it on Saturday after my practice just to see how it was progressing.

"It was all clear for the first time on the scans, which is really positive. I wanted that kind of for my own peace of mind to know that the injury has healed. 

"Obviously I still need to take precautions and still do some rehab and protect it when I can, but in the match it was absolutely fine."

Andy Murray said he intends to make the most of every appearance on Centre Court after recovering from one set down to beat James Duckworth in his Wimbledon opener.

Two-time Wimbledon champion Murray took two hours and 43 minutes to record a 4-6 6-3 6-2 6-4 win over the Australian, maintaining his record of having never fallen at the first hurdle in SW19.

Murray is making just his second Wimbledon appearance since 2017 and is looking to better last year's run to the third round, where he suffered a straight-sets reverse against Denis Shapovalov.

Having endured a spate of injuries and undergone two hip surgeries since his last Wimbledon triumph in 2016, the 35-year-old said he will enjoy every opportunity he gets to play in front of a home crowd on Centre Court.

"It's amazing to be back out here again with a full crowd after the last few years, amazing atmosphere," he said.

"Obviously I'm getting on a bit now, so I don't know how many more opportunities I'll get to play on this court. I want to make the most of every time I get to come out here now.

"I'm glad I managed to get through and hopefully I'll get another match on here in a couple of days."

After fighting back to beat the world number 74, Murray expressed his hope he could grow into the tournament as he advances. 

"I thought I did well to rebound after the first set, he likes playing on the grass, he's come back from a hip surgery himself in January and was playing very well," he added.

"Once I started to find my returns a little bit more as the match went on, I felt a bit more comfortable and did well to get through.

"Naturally, there's always nerves and pressure and butterflies and stress and all of those things before the first match, it was a longer build-up for me than usual because of the ab injury I had after Stuttgart [where Murray finished as runner-up earlier this month].

"I've done a lot of practising here, I've been at the venue a lot in the last couple of weeks so yeah, it was great to get out here, get a win under my belt and hopefully I'll play better from here on in."

Murray will face big-serving American John Isner in the second round on Wednesday, having won each of the duo's eight previous head-to-head meetings.

Carlos Alcaraz insisted he is not feeling any pressure to be among the Wimbledon favourites after coming through a marathon four-hour clash with Jan-Lennard Struff to reach the second round.

Alcaraz, whose four Tour-level titles in 2022 are more than any other player on the ATP Tour, has been tipped for a deep run at Wimbledon after surging to seventh in the world rankings.

But the 19-year-old was on the brink of a stunning first-round exit when he was taken to a fourth-set tie-break at 2-1 down on Monday, eventually recovering to post a gruelling 4-6 7-5 4-6 7-6 (7-3) 6-4 win on No. 1 Court.

In his post-match media conference, the Spaniard reiterated last week's claim that he is not one of the favourites to triumph in London, although he said he could win the tournament if he plays to the best of his ability.

"I don't feel the pressure because I don't rank myself as one of the favourites to win this tournament," Alcaraz said.

"Obviously if I play well, I have [the] level to win the tournament, but there are a lot more experienced players on grass. I don't feel the pressure."

Alcaraz also conceded his grass-court game can still improve as he hailed his tremendous serving display – which brought him 30 aces, as the reason for his victory.

"I enjoyed [the match] a lot," he added. "Great battle over four hours. For me, [to] play on grass is so beautiful. I like to play on grass. 

"I would say my level on grass has to improve a little bit, but I'm happy with my level.

"I didn't expect to move as well as I did. I mean, I played really well, I felt really well playing on grass and I still don't know how I served [so well].

"This is probably my best match serving. This was a weapon that I used [and] that's why I won – the serve, for sure."

Alcaraz will face Tallon Griekspoor in the second round after the Dutch player overcame Fabio Fognini in four sets on day one.

Anhelina Kalinina and Lesia Tsurenko will face off in the second round of Wimbledon on Wednesday with just one thing in their mind – helping Ukraine's war efforts back home.

Ukrainian pair Kalinina and Tsurenko came through their first-round tests with Anna Bondar and Jodie Burrage respectively on Monday to advance to the next stage.

Both players receive £50,000 for progressing, while £78,000 is up for grabs for the winner of their midweek meeting at the All England Club.

And given the events in Ukraine, where thousands have been killed or wounded since Russia invaded in February and at least 12 million have fled, motivation is not an issue.

"I feel that I play better, just because for me emotionally winning or losing doesn't exist any more," Tsurenko said. "For me, there is a big issue in my life: it's war. And there is nothing else that can beat this.

"I think with all the sportsmen that are able to take part in the competitions, also with all the singers that go to Poland, to Germany, and having all the concerts, that part when Ukrainians can just go and remind the whole world that we are here, we still have war and we need your help.

"This is the main thing that I would wish to happen, that we get a lot of heavy weapons. It's just that we should remind with the fact that we are here and we are playing for my country, for Ukraine. We just want to remind that Ukraine is in trouble and we need help."

Kalinina, who revealed her parents' house in Irpin had been bombed, added: "I understand it’s hard to focus, but for me it matters if I win or if I lose. The more I win, I'm not only helping my family, I'm helping other families and other people.

"You go further. You earn more money. Then I'm able to help, and I'm helping as much as I can and not only to my family. So for me that matters. I'm not a superstar so I'm helping with what I can. And it's a lot to them, and for me that's huge motivation to play. Huge."

Ons Jabeur targeted becoming world number one after making a confident start to her Wimbledon bid, having required just 53 minutes to record a straight-sets win over Mirjam Bjorklund.

Jabeur, who became world number two on Monday – the highest ranking ever achieved by an African player on either the WTA or ATP tour – raced to a 6-1 6-3 first-round victory on No. 1 Court.

The Tunisian, who prepared for her Wimbledon campaign by winning the German Open earlier this month and playing doubles with Serena Williams at the Eastbourne International, will face Katarzyna Kawa in the second round on Wednesday. 

Ranking points are not on offer at the All England Club due to Russian and Belarusian players being banned, but Jabeur is already looking further ahead, declaring after her opener that becoming the world's top female player this year was her aim.

Asked whether she was hopeful of bettering her run to the last eight in SW19 last year, Jabeur said: "Yes, for sure, especially [after] today I achieved my highest ranking.

"It's really amazing to be here, to come back to Wimbledon, to play on one of the greatest surfaces that I like, especially one that loves my drop shots and my slices, so I'm happy to be back and hopefully I'll go further than the quarter-finals.

"It's a great start for me. I want to go as far as I can this tournament and dropping four games is a start.

"In the beginning of the season, I was like number 10 or number nine, and I said, 'I belong in this ranking and I don't feel I deserve to be five or four'.

"Now I feel like I deserve it even more. I feel like I won matches to prove myself on this level.

"I do feel more confident. I do feel like I deserve to be on this level. Hopefully next step will be number one."