Maria Sharapova retired from tennis by 2000.
The 2016 Australian Open was a tennis tournament that took place at Melbourne Park between 18 -- 31 January 2016 . Drug test . Major applications of drug testing include detection of the presence of performance enhancing steroids in sport , employers screening for drugs prohibited by law ( such as cannabis , cocaine and heroin ) and police officers testing for the presence and concentration of alcohol ( ethanol ) in the blood commonly referred to as BAC ( blood alcohol content ) . Maria Sharapova . In March 2016 , Sharapova revealed she had failed a drug test at the 2016 Australian Open on January 26 , 2016 .