Naomi Osaka Opens Up About Defeating Serena Williams at U.S. Open - Watch!

Naomi Osaka is opening up about her win!

The 20-year-old U.S. Open winner and first Japanese player to win a Grand Slam singles title appeared on The Ellen DeGeneres Show on Wednesday (September 12).

PHOTOS: Check out the latest pics of Naomi Osaka

Naomi opened up about defeating Serena Williams in the U.S. Open final and the controversial match. She revealed she was practicing her victory speech when she put the towel over her head after she won.

She also shared what Serena whispered to her when she received the trophy.

Naomi also talked about what she would do with her $3.8 million prize money! Plus, Ellen has a surprise for her…

Watch below!