Amidst allegations of performance-enhancing drug use, Florence Griffith Joyner retired from competitive track and field, just before the commencement of mandatory random drug testing. She died at the age of 38.
Marion Jones was stripped of her two bronze medals and three gold medals, which she had won at the 2000 Summer Olympics, after admitting to steroid use. She was one of the famous athletes to be associated with the BALCO scandal.
In 2007, Martina Hingis received a two-year suspension from the 'International Tennis Federation' (ITF) after testing positive for Benzoylecgonine, which has traces to cocaine. Martina maintained her innocence and stated that she didn't use cocaine.
In 2016, Russian tennis star Maria Sharapova admitted to testing positive for meldonium, which is a banned substance. She said that she had been using meldonium for ten years without realizing that it had been banned.
Hope Solo received a public warning after a sample of her urine tested positive for canrenone, which is named in the U.S. Anti-Doping Agency's (USADA) prohibited list. Solo responded by saying that she had no idea that a drug prescribed by her doctor contained canrenone.