Naomi Osaka and Serena Williams safely through as Australian Open begins

Wearing a striking one-legged catsuit that she later revealed was inspired by 1980s athletics star Florence Griffith Joyner, Williams brushed aside Germany’s Laura Siegemund 6-1 6-1 in just 56 minutes.

The 39-year-old made a nervous start to her 100th match at the tournament, dropping serve in the opening game, but won the next 10 to ease through to a second-round clash with Nina Stojanovic.

Williams had pulled out of last week’s warm-up event with a shoulder problem, and said: “I was happy just to get through it. I wasn’t sure how my serve would be after a little bit of that shoulder, but it’s feeling good, I’m feeling good.”

She rushed off court to watch another evergreen athlete, Tom Brady, win his seventh Super Bowl with the Tampa Bay Buccaneers at the age of 43.

“I just was watching as much as I could to see,” she said. “My only word is it’s unbelievable. I kept saying, ‘This is unbelievable, this is unreal’.”

It was a successful day for the Williams family, with Venus claiming her first victory at a grand slam since 2019.

The 40-year-old, who is playing in a record 88th grand slam main draw, defeated 35-year-old Kirsten Flipkens 7-5 6-2.

Like Williams, Osaka withdrew from last week’s warm-up event with a shoulder problem but she made it clear it was precautionary and was in fine fettle in a 6-1 6-2 victory over Anastasia Pavlyuchenkova.

Pavlyuchenkova had reached the quarter-finals in three of the past four years but Osaka was simply far too sharp, winning the opening four games and barely putting a foot wrong.

On what appeared to be a tough draw, Osaka said: “It’s always really hard to play someone that good in the first round. I feel like it might have also helped in a way because I calmed my nerves because I felt like I couldn’t afford to be that nervous.”

The victory extended Osaka’s winning run, stretching back a year, to 15 matches, and she cited last year’s defeat by Coco Gauff in Melbourne as a turning point in her mental approach.

The third seed, who won her third slam title at the US Open last summer, said: “I think just after losing here to Coco, because she is sort of the person that I never wanted to lose to in this situation, just being the defending champion, losing to her in such a high-profile match, I think it really shocked me.

“I actually played a match in Fed Cup in Spain that I don’t know if a lot of people knew about (losing 6-0 6-3 to Sara Sorribes Tormo).

“There’s just a lot of stuff that happened there, surrounding that time, that it really made me think a lot about my life and what is the reason – am I playing tennis to prove stuff to other people or am I playing to have fun because I enjoy it?”

French Open champion Iga Swiatek has been wrestling with the different pressures of being a grand slam winner but the Pole negotiated her first hurdle successfully, beating Arantxa Rus 6-1 6-3.

Three-time grand slam winner Angelique Kerber was a shock casualty though. The German, one of 72 players to endure a hard quarantine, lost the first nine games in a 6-0 6-4 defeat by Bernarda Pera.

There was a notable victory, meanwhile, for Canadian qualifier Rebecca Marino.

The 30-year-old was playing her first grand slam main draw match for eight years after stepping away from the sport in 2013 for mental health reasons, and her 6-0 7-6 (9) victory over Kimberly Birrell was her first at this level for a decade.

Marino said: “I feel a lot more confident in my playing ability and my mental strength and fortitude. I feel like I still have my big serve and my forehand but a lot of it was between my ears, just fighting for every point, having a confidence that I know I belong here again.”