Her US Open title and supporting role in Serena Williams' meltdown in last year's US Open final made Naomi Osaka a household name.
But the world No.4 is loving the anonymity that comes with playing at the Australian Open in Melbourne.
Unlike in Japan, where she wears a wig and glasses to go out at night, Osaka says she's been wandering around the Victorian capital without any fanfare.
That could all change if Osaka continues her winning run in her quarter-final match on Wednesday against Ukrainian sixth seed Elina Svitolina.
A win could set up a repeat clash with Williams - who faces Karolina Pliskova next - in a semi-final which would be anything but low-key.
"I'm a ghost; you don't see me," Osaka said.
"No one really says anything. I look at someone and then they just, like, walk away.
"I think the only way people would really care is if I'm wearing some athletic gear, like if I was walking around with my tennis racquet."
The 21-year-old's previous best result at Melbourne Park was her fourth-round showing last year.
After her breakthrough US Open title she feels she has matured mentally and physically.
For the second-straight match she clawed her way back from a set down to earn her fourth round win over Anastasija Sevastova - which she felt was proof of her self-belief and fitness.
"I think my training during off-season helped a lot," Osaka said.
"Abdul (conditioning coach Abdul Sillah) really helped me with letting me sort of believe in the fact that I can play long matches, and I'm OK with that because I don't really get tired."
Osaka and Svitolina, who ousted American Madison Keys in three sets in the round of 16, have met five times with the Ukrainian winning three, including their past two.
They squared off in Melbourne in the second round in 2016, with Osaka triumphant.
Svitolina, 24, has never won a grand slam but is full of confidence after her WTA Finals title victory in October.
She has made the Australian Open quarter-finals the past two years but never advanced to the final four.
Osaka said Svitolina's consistency made her dangerous.
"I have played her multiple times now, and I know she's a very consistent player and when she has the chance she does like to attack," Osaka said.
"She's playing well and I think playing her is going to be very difficult for me."
