Tennis star Maria Sharapova admitted in a Los Angeles press conference that she failed a surprise drug test administered upon her at the Australian Open.

Sharapova, a five-time major champion, said she tested positive for meldonium, a banned substance added to the list this of banned substances year.


Maria Sharapova doping

The tennis star said she has been taking Meldonium since 2006 for a magnesium deficiency.

The WTA has not yet announced a penalty.

maria sharapova drug test

This is a developing story, check back for more details.