The tennis world pays tribute to No. 1 Ash Barty’s surprise retirement at age 25

She’s leaving the sport at the top of her game.

Ash Barty was the No. 1 ranked women’s tennis player in the world and a three-time Grand Slam singles winner, including the Australian Open title from a couple of months ago.

Now? She’s retiring at 25 years old.

The superstar announced in a video interview with ex-doubles partner Casey Dellacqua that she was leaving, saying out loud for the first time that she was retired.

Per ESPN, she joins Justine Henin as the only other WTA No. 1 to retire at the top of the rankings.

The tennis world paid tribute to Barty with the news breaking late on Tuesday night, with so many tweets from current and former pros: