Japan’s Naomi Osaka wowed tennis fans at the Tokyo Open — her first tournament since defeating Serena Williams in the 2018 U.S. Open at Flushing Meadows, NY earlier this month.

The 20-year-old phenom impressed an enthusiastic crowd as she beat Dominika Cibulkova in the 3rd round of the Tokyo Open on Wednesday. Osaka earned 2 breaks in the 1st set and thee breaks in the 2nd set to overwhelm Cibulkova 6-2, 6-1 in just 59 minutes.

Osaka, who was born in Osaka, Japan to a Japanese mother and Haitian father, thrilled the crowd by answering questions in broken Japanese.

After winning the U.S. Open, Osaka told journalists she was working on her native language. Osaka and her parents moved to the United States when she was 3.

Osaka will meet either Anett Kontaveit or Barbora Strycova in the quarter finals of the Tokyo Open this week.

Photos by Koji Watanabe/Getty Images, Koji Watanabe/Getty Images