Australian Open home hope Nick Kyrgios declared Saturday that he could break into the world's top 10 if he can get "right physically and mentally".
But first the world number 51 will need to get past the "unbelievably tough" Canadian 16th seed Milos Raonic in a blockbuster first-round encounter when the year's opening Grand Slam begins on Monday.
Kyrgios rose to a career-high 13th in 2016, but has steadily slipped down the pecking order since.
He cut short last season in October after an elbow injury, admitted he was working on mental health issues and then suffered a spider bite over Christmas.
But he was in an upbeat mood as he spoke to reporters at Melbourne Park on Saturday ahead of squaring off against the former world number three.
"If I get right physically and mentally... realistically I could be top 10. That's a fact," said Kyrgios.
"Right now I'm not even thinking about that. I want to just enjoy my time in Australia, the Aussie summer. I want to play good tennis and be happy. That's the main thing."
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