As she returns to the scene of her first Grand Slam win, World No.1 Naomi Osaka has spoken about her love for New York City - and the woman she beat to win the 2018 US Open, Serena Williams.

"I think New York is home," the 21-year-old said in an interview with CBS. "Whenever I come back I feel instantly comfortable."

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She also talked about achieving her childhood ambitions of winning tournaments and reaching the pinnacle of the rankings, saying: "It's always been a dream. We want to win Grand Slams, we want to be No.1."

She looked back on her triumph in Flushing Meadows last year - and admitted that she is still too shy to talk to Serena Williams, who is one of her idols.

"I have this huge respect for her," she said, before adding: "I don't say hi to her or anything - I get so nervous!"

Top seed Osaka begins her US Open campaign this year against Anna Blinkova of Russia on Tuesday.