Amanda Anisimova becomes new U.S. No. 1, rises to career-high world No. 3

"I think last year I was able to be very consistent because of the self-belief that I kind of instilled in myself, trusting my abilities and being capable to last through a two- or three-week-long tournament, which can be very tough," she explained. "I think I kind of doubted myself in previous situations that I was in maybe a few years ago. Last year, despite whatever challenges or obstacles I had, I still trusted myself and told myself I can get past the finish line. I think that was kind of the biggest change. And the more I put myself in those situations, the more that I trust myself.

"So I think I have had a lot of those experiences last year that going into this year, I just feel very strong and I really believe in myself."

Anisimova will bid for her third consecutive major final appearance at the 2026 Australian Open, which begins main-draw play on Jan. 18. More immediately, the title of No. 1 American is up for grabs this week with Gauff competing for the U.S. at the United Cup and Anisimova playing as the second seed in Brisbane.

World No. 3 Anisimova and No. 4 Gauff are followed by No. 6 Jessica Pegula and No. 7 Madison Keys in this week's WTA rankings. Pegula and Keys are also competing in Brisbane this week alongside Anisimova.