Sharapova failed a test for the banned substance meldonium at the 2016 Australian Open and was suspended for two years by the International Tennis Federation ( ITF ) .
Sharapova is a five - times grand slam champion .
Sharapova , a five - times grand slam champion , failed a test for the banned substance meldonium at the 2016 Australian Open and was suspended for two years by the International Tennis Federation ( ITF ) .