Top-ranked women's tennis player Ash Barty announces retirement at age 25

World No. 1-ranked Ash Barty has announced her retirement from tennis at the age of 25.

Barty said in an emotional video posted Wednesday on social media: "I wasn't quite sure of how I was gonna do this . . . it's hard to say. I'm so happy and I'm so ready. I just know at the moment in my heart for me as a person this is right."

The announcement comes less than two months after she won her home Australian Open, her third Grand Slam singles title.