The five-time Grand Slam champion tested positive for meldonium, a substance she says she has been taking since 2006 for health issues.
I did fail the test and take full responsibility for it. For the past 10 years I have been given a medicine called mildronate by my family doctor and a few days ago after I received a letter from the ITF [International Tennis Federation] I found out it also has another name of meldonium, which I did not know.
I made a huge mistake. I have let my fans down, and let the sport down that I have been playing since the age of four that I love so deeply.
I know that with this I face consequences and I don't want to end my career this way. I really hope to be given another chance to play this game.