Roger Federer is the returning champion, but the GOAT is not the favorite for this season's Aussie.
Australian James Duckworth in round one, trying to win his second Australian Open title some 10 years after his first, when he beat Federer in a dramatic final. Williams has reached the finals of the past two Grand Slam, and she looked relatively sharp at the Hopman Cup in Perth in the first week of January. Then there's a resurgent Rafael Nadal, the likes of Cilic and Sasha Zverev.
Murray, 31, announced on Friday that he meant to quit tennis after Wimbledon but also said that injury may prevent him from playing beyond this month's Australian Open. He's targeting retirement at Wimbledon.
"I'm so impressed with her game, number one; her physicality; her movement for her size [6 feet] is excellent", said McEnroe, also an ESPN analyst.
"I haven't seen her play a match, so I don't really know", Wozniacki responded when quizzed about the American's form. "I don't know if that's also something that maybe is part of the equation".
Murray wants to retire at Wimbledon but the former world number one could walk away from tennis after the Australian Open due an ongoing hip injury.
Agut said: "Everybody knows Andy, everybody knows when he goes on court he gives every time 100%". I was hitting with him in Brisbane and I thought he was playing some good stuff, he just needs everything to click.
"It's a tough one, but one down the road he can look back on and be incredibly proud of everything he has achieved".
Murray played in five Australian Open finals throughout his career, losing them all. Istomin had a shocking secondround win over Djokovic in 2017. I know that will be hard.
"I wouldn't put it past a couple of Australians to cause a few upsets", he said.
"Throughout my career, I've been very lucky that in the off-seasons I never had any setbacks", he told reporters at Melbourne Park.
"I think he has been enjoying being a spokesman in the game and now he has a reputation as encouraging women into sport and into coaching".
"It is true I try to improve, during all my career, all the things", he said. "I can still play to a level, but not a level I have played at". Safe to say she's impressed with the facility improvements! Getting through the first round will be a major achievement in 2019 for the former No. 1-ranked Murray, who has slumped to No. 230 after playing just 12 matches a year ago following surgery on his right hip in January.
Doubts about the second seed's ability to withstand seven matches on hardcourts were reinforced when he retired in the U.S. Open semi-final against Juan Martin del Potro previous year.
Osaka was the eighth different victor of the women's title in the last eight slams but it would be a surprise if she did not achieve more success very soon. The 23-time major victor is in the same section as her sister Venus Williams and Halep, who all start action on Day 2.
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