US Open 2017: Angelique Kerber's title defence ends after first-round defeat to 19-year-old Naomi Osaka
Kerber is out of the tournament and on her way out of the top 10 after being beaten by Naomi Osaka of Japan 6-3, 6-1 in one of the only completed matches on a rainy Tuesday.
New York: Angelique Kerber is gone from the US Open, the first defending champion eliminated in the first round in 12 years.
The sixth-seeded German is out of the tournament and on her way out of the top 10 after being beaten by Naomi Osaka of Japan 6-3, 6-1 in one of the only completed matches on a rainy Tuesday.
Kerber and Osaka had the stage to themselves after play was suspended on all courts other than Arthur Ashe Stadium, which has a retractable roof that was closed midway through No. 1 Karolina Pliskova's 6-2, 6-1 victory over Magda Linette of Poland.
Kerber then took the same court where she beat Pliskova for the title last year and took another stinging defeat in what's been a season-long slump since winning her second Grand Slam title.
The left-hander fell to 25-18 with no titles in 2017 after she was No 1 last year.
The last defending women's champion to lose in the first round was Svetlana Kuznetsova in 2005.
US Open 2021: Great Britain's Emma Raducanu beats Leylah Fernandez in straight sets to win maiden Grand Slam
Raducanu, ranked 150th, was the first British woman in 44 years to win a Slam crown after dispatching 73rd-ranked left-hander Fernandez 6-4, 6-3.
Djokovic beat Berrettini in the quarterfinals of the French Open in June, then came back after dropping the first set to top the Italian again at the All England Club in July.
The 19-year-old Canadian's dream run into her first Grand Slam final ended in defeat Saturday as she fell to British 18-year-old qualifier Emma Raducanu 6-4, 6-3 at Arthur Ashe Stadium.