Ashleigh Barty lost her Rogers Cup opener, but won't lose any sleep if it costs her the world No. 1 ranking.

Sofia Kenin broke serve six times stunning Barty, 6-7 (5), 6-3, 6-4, to roar into the Toronto round of 16 with her first career Top 5 victory yesterday.

More: Kenin Stuns Barty

The defeat means either second-ranked Naomi Osaka or third-ranked Karolina Pliskova can surpass Barty to regain the top spot with deep runs in Toronto, but the Aussie isn't stressing it.

"I couldn't tell from you a bar of soap what's going on with the rankings," Barty said. "It's not something that I worry about or focus on. You know, I try and do the best that I can every single day, and that's all it is."

The reigning Roland Garros champion said the ranking is just a number and does not define her.

"I think regardless of whether it's No. 10, it's No. 50, 200 or it's No. 1, it's just a number next to your name," Barty said. "It doesn't define you as a person or a player. I think, yes, you have some different experiences. And obviously, the closer you are to that world No. 1 ranking, it means you've played some exceptional tennis.

"I mean, I'm just trying to go about it the right way every single day and keep chipping away, keep trying to do all the right things. "

Photo credit: Mark Peterson/Corleve