Two-time Wimbledon champion Petra Kvitova, who has won 27 singles titles on the WTA Tour, is writing a column for the BBC Sport website during the championships at the All England Club.

The 29-year-old Czech, who had not played since pulling out of the French Open in May with an arm injury, beat Tunisian Ons Jabeur 6-4 6-2 in the first round at Wimbledon on Tuesday.

I’m taking away a lot of positive things from my win over Ons Jabeur – I’m pleased with how I played and I surprised myself as well.

I had only hit for three hours in the past five weeks since I had to pull out of the French Open because of the tear in my left forearm.

During my warm-up I thought ‘OK, it’s fine’ but you never know what will happen in the match. The body gets more tired and you’re just going full power and the adrenalin is in there. So I was a bit worried before my match, definitely.

During the match I sometimes thought about my arm, like ‘it’s fine’ or ‘what’s going on there?’ but most of the time when you are seeing the ball coming pretty fast, you don’t really have time to think about it.

My serve also surprised me, it helped me a lot and it hadn’t been great in practice. It’s also good that I only had to play two sets.

But now my arm is going to be sore tomorrow so I’m going to have a day off.

‘No shopping for me tomorrow – well, ok, maybe online!’

I’m definitely not doing any hitting on Wednesday but I will do some fitness work.

I will do some exercises and have some treatment on my body, especially on the arm. So the work is still there but just not with the racquet or the ball.

I have hit three days in a row so my arm is just a bit tired – I just need a day off to get back to work. I will get a massage tonight. Maybe some mobilisation on my back, release everything so my arm doesn’t have to do anything.

I will put ice on it, some cream on it during the night, I will do everything on it!

I’m also going to sleep a lot probably – well, try at least! We’ll go for some dinner, maybe I’ll watch a movie or read a book. I don’t think I’ll go shopping – maybe just online shopping!

Maybe I’ll just go for a walk in Wimbledon village. Sometimes I get recognised but people are very polite so it’s nice.

‘Grass is playing slower here this year’

Like some other players, I have noticed that the grass is playing slower here than in previous years, especially on the match courts.

The Aorangi practice courts are a little bit faster than the match courts.

For me, it’s not great – I like it faster with the type of game plan I have.

The slower grass means the rallies are a little bit longer, it’s not really serve and volley anymore. We’re not seeing it, not even on the men’s side. Maybe Roger Federer is still playing like that, which is nice to see.

The players who are not really playing that fast can still do well in the tournament.

‘Win has not changed my expectations’

My expectations for the tournament have not changed at all despite the win.

Every match the pain could come back and that will mean ‘stop’ for me.

It’s really tough to think like that – maybe you’re going to play well and then suddenly you feel the pain. So hopefully that will not happen to me, I need to stay positive.

I can’t really have high expectations even though I played a good match today. We’ll see how it goes in the next match when I play against Kristina Mladenovic in the second round on Thursday.

I’m not sure how well she is playing on grass but the main thing is that I know I’m playing well on grass.

Petra Kvitova was speaking to BBC Sport’s Sonia Oxley at Wimbledon

• Live scores, schedule and results
• Alerts: Get tennis news sent to your phone

Cori Gauff says her motto is to “just wing it” as the 15-year-old American aims to continue her Wimbledon fairytale on Wednesday.

Gauff, who beat Venus Williams in the first round, plays Magdalena Rybarikova on court two about 19:00 BST.

Britain’s Kyle Edmund plays Spain’s Fernando Verdasco about 15:00 on Centre Court, followed by Novak Djokovic’s meeting with American Denis Kudla.

Heather Watson starts on Court One at 13:00 against Anett Kontaveit.

Canadian 19th seed Felix Auger-Aliassime, who became the first man born in the 2000s to win a Grand Slam match on Monday, faces French 20-year-old Corentin Moutet on court three.

• Murray to partner Serena Williams in mixed doubles

‘We’re all going to die one day – I just want to make the most of it’

Gauff announced her arrival to the world with a stunning victory over seven-time Grand Slam champion Venus Williams, who is 24 years older and had won two of her five Wimbledon titles before Gauff was born in 2004.

The teenage sensation, who idolises the Williams sisters and had a poster of Serena on her wall, showed remarkable composure and belief to become the youngest player to win a main-draw match at SW19 since Jennifer Capriati in 1991.

Now Gauff is aiming to follow Capriati, who went on to reach the last four that year, by moving into the third round when she plays Slovakia’s 2017 semi-finalist Rybarikova, who is also unseeded.

“I just literally don’t play with any pressure. I just tell myself whatever happens happens. I mean, my motto is just, like, wing it,” Gauff, ranked 313th in the world, said.

“This is kind of a sad thing, we’re all going to die one day, I just want to make the most of it.

“I don’t want to put too much pressure on the little moments because those are the moments that kind of turn out big when you look back in life.”

Edmund glad to be back on Centre

Edmund, 24, returns to Centre Court after beating Verdasco’s compatriot Jaume Munar on Monday, with the Yorkshireman hoping to continue building his rapport with the 15,000 home crowd.

“The more you play on there, you feel more comfortable with your surroundings and the court,” said the 30th seed, who lost to Serbia’s eventual champion Djokovic on Centre in the third round last year.

“The crowd obviously reacts to how the match is going, different matches, the time of day.

“I remember the Djokovic match, it was really loud. Sometimes it can be less loud. Just depends on the occasion.

“Regardless of that, any time you play on Centre Court, it’s just an amazing honour and feeling.”

Watson, 27, is aiming to reach the third round for a fourth time when she faces Estonian 20th seed Kontaveit, who is coached by Andy Murray’s father-in-law Nigel Sears.

After first-round exits in Nottingham, Birmingham and Eastbourne, Watson earned a morale-boosting win against American teenager Caty McNally on Monday.

“I’m a confidence player, so not having those wins in the last few weeks, I was maybe overthinking a bit,” said the world number 122.

“I put a lot of pressure on myself naturally because of the person I am. I feel the same every year. I put the same amount of pressure on myself.

“I just really always want to do well.”

Britain’s Andy Murray has confirmed he will play mixed doubles with Serena Williams at Wimbledon.

Murray, a two-time singles champion at SW19, will compete in both the men’s and mixed doubles less than a month after returning following hip surgery.

American Williams, a 23-time Grand Slam singles winner, had earlier told journalists: “If you guys really want it… all right, done.”

The pair are expected to play their first match together on Thursday.

Murray, who won Queen’s with Feliciano Lopez, will partner Frenchman Pierre-Hugues Herbert in the men’s doubles.

The Scot was turned down by world number one Ashleigh Barty before suggesting he might pair up with 37-year-old Williams, who has won seven doubles titles at Wimbledon.

Murray said: “Serena is obviously a brilliant player, has a great doubles record and is brilliant on grass obviously. She’s arguably the best player ever.”

Laughing, he added: “So she’d be a solid partner.”

The only issue will be whether the American’s knees will cope with the extra demands of playing doubles as well as singles – and whether Murray’s fitness holds up to what will be a packed doubles programme if they have a good run.

Williams has struggled with a knee injury this year but beat Giulia Gatto-Monticone on Tuesday.

Murray played mixed doubles at Wimbledon in 2006 where he teamed up with Belgium’s Kirsten Flipkens and reached the second round.

He was also a silver medallist with Laura Robson in the London 2012 Olympics which were played at the All England Club.

Williams is a two-time mixed doubles Grand Slam champion, having partnered Max Mirnyi to win Wimbledon and the US Open in 1998.

Some 64 pairings compete in the mixed doubles, which is played over the best of three sets.

Williams teases media over Murray doubles

Just before the pairing was confirmed, Williams had remained coy about the prospect at a news conference following her first-round singles victory.

Journalist: “When do you think you could make that decision? Next three hours? In the morning?”

Williams: “This is crazy. I don’t know. I’m still kind of in the singles mode, trying to figure that part out. We’ll see. I could use extra matches, though, so… could be something.”

Journalist: “Could you give us a rough percentage of how likely you think it is you would play with Andy?”

Williams: “I don’t know. If you guys really want it, then maybe I’ll do it.”

Journalist: “We do really want it.”

Williams: “Yeah? All right, done, just for you guys. Don’t forget.”

• Relive the coverage of day two from Wimbledon
• Williams through with Barty and Kerber
• ‘Frozen’ Federer survives scare, Nadal also through
• Konta among five Britons to reach second round on Tuesday
• Theatrical Kyrgios sets up Nadal tie as Tomic loses in under an hour
• Sharapova retires injured in final set