Johanna Konta believes she has the ability to beat Serena Williams at the Australian Open
Konta has yet to drop a set at the Australian Open, most recently sweeping aside Ekaterina Makarova 6-1, 6-4.
And the 2016 Australian Open semi-finalist has confidence that she can upset the odds and repeat the feat, despite facing one of tennis' most successful players of all times.
"I believe in my own ability," Konta said.
Johanna Konta has been in superb form at the Australian Open
"I believe in the good things that I bring to the court, and I believe in my ability to fight till the very end.
"Now, there's that and then there's also an opponent out there, and this one's going to be Serena Williams.
"I think it's about playing, me going out there and doing what I want to do against her, and it will be about just staying focused on that.
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"And if that brings me good things on that day, and if that puts me in a position to come through, then that's great."
Williams is an icon of the game with 22 Grand Slam singles titles to her name in a career spanning more than 20 years.
But she has never faced Konta and the Brit does not seem to be worried about the idea of being overwhelmed by the occasion.
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"I guess I need to be on court with her against her first, to see how I deal with things and how I feel playing her," added Konta.
"I have been fortunate enough that I have played her sister a few times, and I think she's just as incredible in what she's achieved in the sport."
Konta beat Venus Williams at the Stanford Classic in July to secure her first ever WTA title.
She hailed it as the biggest win of her career and she has since added a second, beating Agnieszka Radwanska earlier this month in the Sydney International final.
And while the 25-year-old will be going up against Williams for the first time, she believes she has all the necessary safeguards and weapons in place.
"I have played, over the last year and a half, quite a few Grand Slam champions and some former world No. 1s," Konta said.
"I have prepared myself as much as possible to play a competitor like Serena."
But one thing the Australian-born player does not expect is that her opponent will have given her too much thought.
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"I don't necessarily think that Serena Williams possibly gets too worried," said Konta.
"Just the amount of experience she has, I'm sure she's got her system and her method for preparing for every match, regardless who she plays, and I'm sure she's going to be applying that method against me."
The winner of the match, which will likely start at around 2am UK time in the early hours of Wednesday morning, will either play No 5 seed Karolina Pliskova or Mirjana Lucic-Baroni in the semi-finals.