Deep into the Melbourne night on Jan. 26, the newly crowned world No. 1 was still fielding questions from a room full of reporters.

"For the second grand slam final of your career, what kind of things did you talk about with (coach) Sascha (Bajin) beforehand," a journalist asked Naomi Osaka in the aftermath of her thrilling Australian Open win.

Osaka briefly gazed downward and then broke into a chuckle as she responded.