By John Pye

The Associated Press

MELBOURNE, Australia — With Rafael Nadal and Novak Djokovic among the walking wounded and Serena Williams already deciding not to defend her title, injuries and absentees have been the focus of attention ahead of the Australian Open.

That is not bothering Roger Federer, who is returning as defending champion just 12 months after entering the season-opening Grand Slam tournament seeded 17th and uncertain of his prospects after six months off the tour with an injured left knee.

He beat Nadal in a five-set final for his 18th Grand Slam title — and his first since 2012 — and later won Wimbledon.

“I just thought that the game and the wins weren’t going to come … because I would just run into a red-hot Djokovic or Murray or Nadal or somebody and my game wasn’t going to be good enough,” Federer recalled. “I had all these great five-setters and, at the end, the epic match against Rafa.”

Second-seeded Federer and No. 14-seeded Djokovic have almost traded places.

This time, Federer breezily walked into the Australian Open draw carrying the trophy just a few days after helping Switzerland win the Hopman Cup mixed team even. His 2017 comeback could be inspiration for the likes of Djokovic, who has won the Australian title a record six times but has been sidelined since Wimbledon with a right elbow injury.

They are in the same half of the draw — along with No. 4 Alexander Zverev, No. 5 Dominc Thiem, No. 7 David Goffin and No. 9 Stan Wawrinka, the 2014 Australian Open winner who is also returning from injury.

Nadal skipped the year-end championship last November and delayed the start of his 2018 season, so he is also had only exhibition matches to see how his right knee has recovered.

“If I’m not feeling good, probably I will not be here,” Nadal said after his error-filled loss to Richard Gasquet in an exhibition this week. “So that’s the good news.”

Five-time finalist Andy Murray withdrew more than a week ahead of time, deciding to have surgery on a right hip problem that had kept him off the tour since Wimbledon. Kei Nishikori also withdrew.

And so if the 2017 Australian Open was one for the ages — the revival of the Federer-Nadal rivalry and another Williams sisters final — the 2018 edition is shaping as a survival of the fittest.

Serena Williams, who was pregnant when she beat Venus here last year to claim her 23rd major title, gave birth to her first child — Alexis Olympia — in September. She said it did not leave her enough time to feel confident of winning a major.

Venus Williams says Serena is “here in spirit” supporting her in Australia, where she is hopeful of ending an almost decade-long Grand Slam title drought. At 37, Venus is seeded No. 5, coming off a loss to former No. 1 Anglique Kerber in Sydney and has a tougher opener against Belinda Bencic.

Kerber led the WTA Tour in prize money last year ahead of Wimbledon champion Garbine Muguruza and Simona Halep, who ended the year at No. 1.

Entering as the No. 1 seed for the first time at a major and at a tournament where she has had back-to-back first-round exits, two-time French Open finalist Halep opens against teenage wild-card entry Destanee Aiava. She could face two-time Wimbledon champion Petra Kvitova in the third round and Karolina Pliskova in the quarters.

No. 2 Caroline Wozniacki, who hasn’t won a major and last appeared in a Grand Slam final in 2014, is on the bottom half of the draw with Williams and has French Open champion Jelena Ostapenko and last year’s Australian semifinalist CoCo Vandeweghe in her quarter.

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