The 2023 edition of the Australian Open is not the first Grand Slam tournament to be contested without Roger Federer or Serena Williams, of course.

Venus Williams lost to Canadian Rebecca Marino in her return to singles play after more than a year away.

(AP Photo/Seth Wenig)NEW YORK The Latest on the U.S. Open tennis tournament (all times local):6:40 p.m.Unseeded Americans Ann Li and Shelby Rogers have pulled off upset victories in the second round of the U.S. Open. ___6:05 p.m.Top-seeded Karolina Pliskova has been upset in the second round of the U.S. Open by Caroline Garcia of France. It was the first time since 2008 that the top-seeded woman lost in the second round at the Open. Pliskova was a finalist at the Open in 2016 for the best Grand Slam result of her career. Seeking his fourth U.S. Open title, Djokovic lost a physical first set that took more than an hour.