The Russian held a press conference Monday at which she admitted she tested positive for Meldonium, a drug recently banned by WADA, at the Australian Open and expects to face a significant ban from the WTA. Serena Williams somewhat surprisingly showed support for Sharapova, despite the pair having a rocky relationship.
http://nypost.com/2016/03/08/everyone-turns-back-on-sharapova-except-serena-williams/