Ash Barty has played down comparisons between her signature sliced backhand and Roger Federer’s.
During the Channel Nine broadcast of her dominant quarterfinal win over Jessica Pegula, commentator Jim Courier gave the Aussie some lofty praise.
"Ash's slice technique is arguably the best backhand slice technique in the world period," he said during the second set.
"Men's, women's tennis, it doesn't matter. It's spectacular. Roger Federer, if you're back in Switzerland, yeah that's right I said it buddy. (Hers) might be better than yours.
"I'm a fanboy on Ash's backhand slice."
Speaking in her post-match press conference, Barty was her usual humble self when told of Courier’s comments.
"That's very kind from Jim," she said.
"I think everyone's shots are unique. I think obviously Roger has one of the most exceptional slice backhands in the game.
"Mine's a long way off that. Absolutely, no stretch of the imagination we are even on the same page at all.
"I love to use my slice, I love to get creative with it, to use it offensively and defensively.
"Over my career I've learnt it is a weapon for me. I try and use it when I have to.
"Sometimes I try and use it when it's my choice and I can be really, really aggressive with it.
"But being able to use it with variety and have different options has been a massive part of my game through this last couple of years of my career."
Barty will take on another American in the semi-finals in Madison Keys.