Nothing has been easy this year for two-time US Open runner-up Victoria Azarenka. Her first-round match at the US Open was no different.
Second-seeded Simona Halep needed three sets to win her first-round match at the US Open. Ditto for Angelique Kerber, Venus Williams and Andrea Petkovic. Sometimes the early pressure is the most intense pressure.
Sunday's fourth-round match will be the first meeting between the two Americans since Sloane Stephens upset her "mentor," Serena Williams, at the Australian Open.