Russian tennis star Maria Sharapova, the highest-paid woman in sports, said on Monday that she failed a drug test at the Australian Open due to a substance she has been taking for 10 years for health issues.

The 28-year-old Sharapova, a five-time grand slam champion, will be provisionally suspended starting March 12, the International Tennis Federation (ITF) said. She is the seventh athlete in a month to test positive for meldonium, which is used to treat diabetes and low magnesium, and was only banned by the World Anti-Doping Agency as of Jan 1.

That victory also made her the third-youngest Wimbledon champion, behind only Lottie Dod and Martina Hingis, and the fourth-youngest grand slam winner in the open era after Hingis, Monica Seles and Tracy Austin.

She has also been has suspended their Nike sponsorship of Maria Sharapova following her failed drug test at the Australian Open.

Here’s what her fans had to say about the whole thing.

And then there was this tweet.