Jessica Pegula does not land on many magazine covers. Her steady game does not produce a lot of highlight-reel moments. She is the world’s third-ranked player but has floated largely under the radar during her steady rise to the top of tennis.

At the Australian Open this year, that approach is looking more and more like a secret to success.

Iga Swiatek, the world No. 1 from Poland, lost Sunday in the fourth round and became the latest top-ranked player to talk about the burdens of being at the top.